Re: LDAP postfix

2004-08-12 Thread Robert Waldner

On Wed, 11 Aug 2004 20:18:02 EDT, Fraser Campbell writes:
Does anyone know of a step-by-step howto of setting up LDAP for use with 
postfix? 

http://www.postfix.org/LDAP_README.html ?
http://www.google.com/search?q=postfix+ldap+howto ?

 I have users in LDAP and now I want to define aliases  virtual 
domains within LDAP.  I'd be happy to write the howto once I get the basics 
down ...

What MDA are you using? I've just set up postfix/OpenLDAP/courier
 for a customer.

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
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Re: LDAP postfix

2004-08-12 Thread Robert Waldner

On Thu, 12 Aug 2004 07:57:17 EDT, Fraser Campbell writes:
 What MDA are you using? I've just set up postfix/OpenLDAP/courier
  for a customer.

Exactly what I would like to use.  My problem is mainly with LDAP, I've set up
postfix many times using mysql for account storage and using virtual users.  
This time around I want to store accounts in LDAP and use real accounts (as 
opposed to the postfix virtual delivery agent).

Any chance you could show me the LDAP setup along with a dump (LDIF) of how a 
few accounts are set up?

Sure.

main.cf:

alias_maps = hash:/etc/aliases ldap:ldapsource
...
virtual_mailbox_base = /
virtual_mailbox_maps = ldap:ldapsource
virtual_uid_maps = static:8
virtual_gid_maps = static:8
virtual_minimum_uid = 8
virtual_mailbox_size = 1000
...
ldapsource_server_host = localhost
ldapsource_search_base = ou=virtualusers,dc=XXX,dc=at
ldapsource_query_filter = ((mail=%s)(objectClass=CourierMailAccount))
ldapsource_result_attribute = homeDirectory
ldapsource_result_filter = %s/Maildir/
ldapsource_scope = sub
ldapsource_bind = yes
ldapsource_bind_dn = cn=postfix,ou=daemons,dc=XXX,dc=at
ldapsource_bind_pw = xxx
# ldapsource_debuglevel = 99

courier is pretty straightforward, I only had grief with shared IMAP 
 folders. If you need that config, too, I'll need to find half an hour 
 to dig out the necessary bits.

In LDAP I have objects for both courier and postfix, like
 dn: cn=courier,ou=daemons,dc=XXX,dc=at
 objectClass: top
 objectClass: applicationProcess
 objectClass: simpleSecurityObject
 cn: courier
 userPassword:: XXX
 creatorsName: cn=admin
 createTimestamp: 20040708123655Z
 modifiersName: cn=admin
 modifyTimestamp: 20040708123655Z

And
 dn: ou=virtualusers,dc=XXX,dc=at
 objectClass: organizationalUnit
 ou: virtualusers
 creatorsName: cn=admin
 createTimestamp: 20040708123730Z
 modifiersName: cn=admin
 modifyTimestamp: 20040708123730Z

And users like
 dn: cn=waldner,ou=virtualusers,dc=XXX,dc=at
 creatorsName: cn=admin
 createTimestamp: 20040708124820Z
 userPassword:: XXX
 objectClass: top
 objectClass: CourierMailAccount
 mail: [EMAIL PROTECTED]
 mail: [EMAIL PROTECTED]
 mail: [EMAIL PROTECTED]
 uidNumber: 8
 gidNumber: 8
 homeDirectory: /var/mail/waldner/
 clearPassword: XXX
 modifiersName: cn=admin
 modifyTimestamp: 20040723110831Z

I've extended an ldap-scheme I found somewhere[0] a bit, because I 
 needed other, and more, stuff (like vacation info, but I'll not 
 include that here). OpenLDAP itself didn't need more tweaking than is 
 obvious in the config-files.

0: google for ISPEnv2.schema

cheers,
rw
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Re: IIS worms and apache

2004-08-10 Thread Robert Waldner

On Tue, 10 Aug 2004 20:50:13 +1000, Russell Coker writes:
Maybe the thing to do would be to write a server that establishes the HTTP 
protocol and then sets the TCP window size to zero (to tar-pit connections).  
Such a server program could listen on every IP address that's not used for a 
real web server and tie up resources on the zombie machines without wasting 
space in log files.

Why limit yourself to HTTP?

http://packages.debian.org/testing/net/labrea
.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.
a sticky honeypot and IDS

LaBrea takes over unused IP addresses, and creates virtual servers that
 are attractive to worms, hackers, and other denizens of the Internet.
 The program answers connection attempts in such a way that the machine
 at the other end gets stuck, sometimes for a very long time. 
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.

cheers,
rw
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Re: Cloning disks with dd and netcat

2004-07-27 Thread Robert Waldner

On Tue, 27 Jul 2004 13:13:22 +0200, Volker Tanger writes:
What happens if you do the partitioning manually and image the
partitions (/dev/hda1, /dev/hda2, ...) one-by-one instead of the
complete disc? Well, doing the partitioning manually, you could RSYNC
the server instead of DD+NETCATing, which probably is faster and fails
more gracefully.

But would mean mucking around with the bootloader, which usually is the 
 point for doing _complete_ disc-images.

cheers,
rw
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Re: Cloning disks with dd and netcat

2004-07-27 Thread Robert Waldner

On Tue, 27 Jul 2004 14:05:14 +0200, Volker Tanger writes:
True - but DDing a 200GB system disc disc takes quite some time, while
manually handling partition+mkfs+lilo plus RSYNCing 1.2GB usually is
LOTS faster...

Upgrading to servers with newer/bigger discs is also less painful than
with imaging.

But for mostly uniform hardware or testlabs (with frequent system
bashing) it's the leisure-factor that is heavily in favour of DD images,
I confess...   ;-)

That's why I often do dump/restore followed by dd'ing the first couple 
 bytes ;)

cheers,
rw
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Re: Christian Hammers ch@lathspell.de

2004-07-20 Thread Robert Waldner

On Tue, 20 Jul 2004 22:06:01 +1000, Russell Coker writes:
(host mail3av.westend.com[212.117.79.67] said: 450 [EMAIL PROTECTED]: 
Recipient address rejected: Greylisted for 300 seconds... (in reply to RCPT 
TO command))  [EMAIL PROTECTED]

Christian's mail server is broken.

Why would you conclude that? It doesn't want your mail _at this moment_ 
 and tells you correctly that this is a temporary condition so you (or 
 your MTA) know that trying again later would be perfectly OK.

cheers,
rw
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Re: Eth*'s and they corresponding hardwares

2004-05-04 Thread Robert Waldner

On Tue, 04 May 2004 04:49:39 -0300, UnKnown writes:
But I was wondering if there is a way to bind a sertein ethernet hardware
to an specific eth device.

I just compile the drivers as modules and load them in the desired 
 order. If you do it otherwise, you're always at the mercy of the BIOS 
 anyway.

cheers,
rw
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Re: Eth*'s and they corresponding hardwares

2004-05-04 Thread Robert Waldner

On Tue, 04 May 2004 04:49:39 -0300, UnKnown writes:
But I was wondering if there is a way to bind a sertein ethernet hardware
to an specific eth device.

I just compile the drivers as modules and load them in the desired 
 order. If you do it otherwise, you're always at the mercy of the BIOS 
 anyway.

cheers,
rw
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Re: Considering Debian (currently using Red Hat)

2004-01-14 Thread Robert Waldner

On Wed, 14 Jan 2004 09:56:35 EST, Fred Whipple writes:

I'll answer just the points I have opinions/knowledge on.

2.)  A related reason we used Red Hat was that practically anything you 
could want to use was pre-packaged in a simple to install RPM.  And they 
were typically pretty high quality RPM's, and very often well 
maintained.  Do admins typically find that they're able to find Debian 
packages for most software they're typically interested in using?  I 
realise this varries greatly between markets, but I guess what I'm 
asking is do you usually find 70% of the packages you're interested in 
in Debian package format, and well maintained?  80%?  Just a general idea.

Debian uses the .deb package format. I'd guess that well over 90 % of 
 the software we need can be found pre-packaged (and well-maintained) as 
 .deb's.

3.)  I read quite a bit of the Web site, and see that in general, 
releases seem to be very far and few between.  This is advantageous to 
ISP's, of course, because we want things to just work.  Is my 
perception correct in that releases are far apart?

Stable releases are quite far apart, yes.

 When is the next 
release expected?  How significant is the difference from, say, 3.0 and 
3.1.  Can you just install a bunch of packages and call it an upgrade, 
or do you have to go through a whole ordeal as you do between Red Hat .X 
versions?

Upgrading to a new release is just an `apt-get dist-upgrade` away. I've 
 personally upgraded a box through every release from 1.mumble to 3.0 .

4.)  How long are previous versions maintainaned with patches and such?  
Or to restate this, how long after a new version is released are you 
FORCED to upgrade in order to maintain security?

A couple months at least, usually about half a year.

How drastic are the 
changes in between minor version increments (say, 3.0 to 3.1)?  For 
example, Red Hat has tended to make significant kernel upgrades and 
glibc upgrades in minor version changes, and has caused significant 
incompatibilities that have caught us by surprise.

Debian focuses on security and stability in the stable branch, so 
 there never should be any problems with that as long as you track 
 stable (the testing and unstable releases are another matter, just
 as their names suggest). The trade-off, of course, is that new 
 software (resp. new versions of software) takes its time to make it into
 the stable branch.

6.)  And finally, if you care to toss in any ideas or info, I'm very 
glad and excited to hear it.  For instance, if you were going to switch 
all your systems within the next year, would you choose something else?  
A BSD port?  Go back to Solaris?  Novell?  SCO?  Just kidding.

IMHO Debians main advantage is the packaging. You can track 
 security-updates of _all_ installed packages with a simple `apt-get 
 upgrade`, and there should never be any surprising side-effect to it. 
 Re-installs of the system for upgrading purposes are unknown for Debian
 (unless you're upgrading _to_ Debian ;) ).
Another advantage is that there's no integrated admin-tool which 
 will destroy your precious hand-crafted config files, no yast or 
 suseconfig or somesuch. The downside to that is that you have to 
 know how to use an editor, of course, and there's mostly no setup 
 wizards to guide you. Packages do, of course, come with mostly 
 sensible (and secure) default configs, though. Should an upgrade have 
 the necessity to change a config-file, it'll ask you if you want it to 
 (it can also show you a diff first) or not.
Plus. according to policy, there's at least a man-page for everything 
 in *bin and /etc, and some documentation for _eachevery_ installed 
 package in /usr/share/doc/package.

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /




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Re: Considering Debian (currently using Red Hat)

2004-01-14 Thread Robert Waldner

On Wed, 14 Jan 2004 09:56:35 EST, Fred Whipple writes:

I'll answer just the points I have opinions/knowledge on.

2.)  A related reason we used Red Hat was that practically anything you 
could want to use was pre-packaged in a simple to install RPM.  And they 
were typically pretty high quality RPM's, and very often well 
maintained.  Do admins typically find that they're able to find Debian 
packages for most software they're typically interested in using?  I 
realise this varries greatly between markets, but I guess what I'm 
asking is do you usually find 70% of the packages you're interested in 
in Debian package format, and well maintained?  80%?  Just a general idea.

Debian uses the .deb package format. I'd guess that well over 90 % of 
 the software we need can be found pre-packaged (and well-maintained) as 
 .deb's.

3.)  I read quite a bit of the Web site, and see that in general, 
releases seem to be very far and few between.  This is advantageous to 
ISP's, of course, because we want things to just work.  Is my 
perception correct in that releases are far apart?

Stable releases are quite far apart, yes.

 When is the next 
release expected?  How significant is the difference from, say, 3.0 and 
3.1.  Can you just install a bunch of packages and call it an upgrade, 
or do you have to go through a whole ordeal as you do between Red Hat .X 
versions?

Upgrading to a new release is just an `apt-get dist-upgrade` away. I've 
 personally upgraded a box through every release from 1.mumble to 3.0 .

4.)  How long are previous versions maintainaned with patches and such?  
Or to restate this, how long after a new version is released are you 
FORCED to upgrade in order to maintain security?

A couple months at least, usually about half a year.

How drastic are the 
changes in between minor version increments (say, 3.0 to 3.1)?  For 
example, Red Hat has tended to make significant kernel upgrades and 
glibc upgrades in minor version changes, and has caused significant 
incompatibilities that have caught us by surprise.

Debian focuses on security and stability in the stable branch, so 
 there never should be any problems with that as long as you track 
 stable (the testing and unstable releases are another matter, just
 as their names suggest). The trade-off, of course, is that new 
 software (resp. new versions of software) takes its time to make it into
 the stable branch.

6.)  And finally, if you care to toss in any ideas or info, I'm very 
glad and excited to hear it.  For instance, if you were going to switch 
all your systems within the next year, would you choose something else?  
A BSD port?  Go back to Solaris?  Novell?  SCO?  Just kidding.

IMHO Debians main advantage is the packaging. You can track 
 security-updates of _all_ installed packages with a simple `apt-get 
 upgrade`, and there should never be any surprising side-effect to it. 
 Re-installs of the system for upgrading purposes are unknown for Debian
 (unless you're upgrading _to_ Debian ;) ).
Another advantage is that there's no integrated admin-tool which 
 will destroy your precious hand-crafted config files, no yast or 
 suseconfig or somesuch. The downside to that is that you have to 
 know how to use an editor, of course, and there's mostly no setup 
 wizards to guide you. Packages do, of course, come with mostly 
 sensible (and secure) default configs, though. Should an upgrade have 
 the necessity to change a config-file, it'll ask you if you want it to 
 (it can also show you a diff first) or not.
Plus. according to policy, there's at least a man-page for everything 
 in *bin and /etc, and some documentation for _eachevery_ installed 
 package in /usr/share/doc/package.

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /




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Re: using spamassassin in an isp environment ?

2003-04-09 Thread Robert Waldner

On Wed, 09 Apr 2003 11:42:48 +0200, =?iso-8859-1?q?Tom=E0s=20N=FA=F1ez=20Lirola
I've thought several times about using DNSRBLs, but I don't know nothing ab=
out=20
them... Do you recommend them to me? Are they difficult to add to my=20
sendmail? Any doc where I can get more info about them?

http://www.google.com/search?q=sendmail.mc+dnsbl+blackholes.mail-abuse.org

cheers,
rw
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cyrus/pam_userdb, how to let users change their own passwords

2002-12-05 Thread Robert Waldner

Hi!

I use cyrus together with pam_userdb.so (to not have every mail-user 
 also have a local system account).

Now I need to let my mail-users change their own passwords, preferrably 
 via a web-interface.

Before I hack together a perl script that does the checking and 
 furtheron recreates the .db-file for pam_userdb, is there already 
 something Out There which does this? google and freshmeat only turned 
 up stuff for changing system passwords (or doing everything in mysql/
 postgresql, which I really can't do on the system in question).

TIA for any hints.

cheers,
rw
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pam_userdb and version of .db-file

2002-10-30 Thread Robert Waldner

(I'm not really sure this belongs here, but it seems at least as 
 fitting as -user, where I didn't get an answer. If this is the wrong 
 place, just tell me to shut the f**k up ;) - although in that case
 I'd appreciate pointers on where to best ask this)

Hi!

One of the latest updates to my i386/stable-box gave me severe 
 headaches wrt the subject.

I run cyrus for providing a small handful of users with POP3/
 IMAP4-access, and since I do not want all of them to have shells on my 
 box, I authenticate them via pam_userdb and a separate password-file.
 Until recently this just worked. I'd create the .db-file with 
 sendmails makemap from a keywhitespacevalue\n-style source.

Now makemap produces Version 8 (libdb3?) files, which pam_userdb 
 cannot read. After much debugging I've now resorted to creating a 
 Version 5 .db-file with db_load (from libdb2-util). This seems like
 an ugly kludge (it's far from intuitive, and db_load wants paired
 lines of input which means I have to rewrite all my little
 helper-scripts).

Is there a standard or preferred way of doing this? Maybe one which 
 has some probability of surviving the next libdb-/sendmail-upgrade?

TIA+cheers,
rw
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Re: Kuvert Application Problem

2002-08-06 Thread Robert Waldner

(I think this really belongs on -user, so CC, full-quote, and reply-to)

On Mon, 05 Aug 2002 18:12:57 CDT, Daniel J. Rychlik writes:
I have recently installed the kuvert application from debian.  I'm
running Debian testing on a 2.4 kernel.  When I run the kuvert
application from command line, I get this error -

Sh: /tmp/kuvert.0.26244/subprocess: No such file or directory
Cant clean /tmp/kuvert.0.26244: cant opedir/tmpkuver.0.26244: No such
file or directory.

Any Ideas?

I guess the permissions on your /tmp-directory are off, should be 
 something like
drwxrwxrwt8 root root 2048 Aug  6 11:17 tmp

Also, which version of kuvert are you using?

cheers,
rw
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Re: MLM solution?

2002-07-09 Thread Robert Waldner


On Tue, 09 Jul 2002 12:52:14 +0200, Thomas -Balu- Walter writes:
  Mailinglistmanager that supports
  - virtual hosts (and different setups for each)
  - translation / customization of all automatic generated
messages
  - Newsletter-style setups 
  - automatic handling of bounces
  - administrative web-pages (for the customers)
  - .deb :)
...
What about ecartis(listar) or mailman? Do they meet the requirements?

Yes, ecartis meets those. You probably don't want to use the .deb, 
 though (but it's a straightforward install even without).

Oh, and before anyone else brings it up: yes, the 8bit-q/p - flaws are
 finally fixed ;) .

cheers,
rw
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Re: MLM solution?

2002-07-09 Thread Robert Waldner


On Tue, 09 Jul 2002 14:31:07 +0200, Thomas -Balu- Walter writes:
I've tried ecartis a while ago (half a year?) and one thing I did not
like were those messages (not translateable - one of the biggest
feature-requests at that time :)) a user had to reply to be subscribed.

Is that possible by now?

I think you can do that on a per-list basis with texts in the $list/
 texts - directory, but as I don't use that particular feature..

cheers,
rw
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Re: MLM solution?

2002-07-09 Thread Robert Waldner

On Tue, 09 Jul 2002 12:52:14 +0200, Thomas -Balu- Walter writes:
  Mailinglistmanager that supports
  - virtual hosts (and different setups for each)
  - translation / customization of all automatic generated
messages
  - Newsletter-style setups 
  - automatic handling of bounces
  - administrative web-pages (for the customers)
  - .deb :)
...
What about ecartis(listar) or mailman? Do they meet the requirements?

Yes, ecartis meets those. You probably don't want to use the .deb, 
 though (but it's a straightforward install even without).

Oh, and before anyone else brings it up: yes, the 8bit-q/p - flaws are
 finally fixed ;) .

cheers,
rw
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Re: MLM solution?

2002-07-09 Thread Robert Waldner

On Tue, 09 Jul 2002 14:31:07 +0200, Thomas -Balu- Walter writes:
I've tried ecartis a while ago (half a year?) and one thing I did not
like were those messages (not translateable - one of the biggest
feature-requests at that time :)) a user had to reply to be subscribed.

Is that possible by now?

I think you can do that on a per-list basis with texts in the $list/
 texts - directory, but as I don't use that particular feature..

cheers,
rw
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Re: RCS control for config files

2002-07-02 Thread Robert Waldner


On 01 Jul 2002 16:41:25 CDT, Alex Borges writes:
Ive finnaly come to a point where i think im needing revision control
for my configuration files on some servers 

So i thought id come in and ask you guys if there is some vertical stuff
explicitly for this purpose or if you yourselves simply cvs ci your /etc
directory et all..

Or any tips would be appreciated (like i use emacs and rcs...works for
me)

:) waldner@beren-~ $ cat `which rcsvi`
#!/bin/sh

/usr/bin/co -l $1  /usr/bin/vi $1 ; /usr/bin/ci -u $1

exit

cheers,
rw
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Re: RCS control for config files

2002-07-02 Thread Robert Waldner

On 01 Jul 2002 16:41:25 CDT, Alex Borges writes:
Ive finnaly come to a point where i think im needing revision control
for my configuration files on some servers 

So i thought id come in and ask you guys if there is some vertical stuff
explicitly for this purpose or if you yourselves simply cvs ci your /etc
directory et all..

Or any tips would be appreciated (like i use emacs and rcs...works for
me)

:) [EMAIL PROTECTED]~ $ cat `which rcsvi`
#!/bin/sh

/usr/bin/co -l $1  /usr/bin/vi $1 ; /usr/bin/ci -u $1

exit

cheers,
rw
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Re: Cyrus IMAP

2002-06-28 Thread Robert Waldner

On Fri, 28 Jun 2002 09:40:02 CDT, Gregory Wood writes:
I am trying to configure IMAP for a customer. I used dselect and got the=
 'required' Cyrus IMAP server. The first thing that struck me as strange is=
 that it didn't generate any config files. So, I went to the Cyrus home=
 page and got the install instructions and started working through that.=
 One line says, 'tools/mkimap'. Only there is not tools directory and no=
 mkimap script anywhere on my system.

Where have I gone wrong?

1st: You've sent your mail in both text and HTML. DO NOT send 
 HTML-mail, PLEASE. http://expita.com/nomime.html
2nd: Have a look at /etc/imapd.conf
3rd: Configure cyrus (cyrdeliver) as delivery agent (MDA) in your MTAs 
 config.
4th: Setup some IMAP-mailboxes (`cyradm localhost`, make sure the
 cyradm-user exists in whatever way you configured via imapd.conf), 
 create the cyrus-mailboxes per `cm user.$mailboxname` in cyradm.
5th: Have fun!

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /



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Re: webmail

2002-06-17 Thread Robert Waldner

On Sun, 16 Jun 2002 23:09:44 +0200, Russell Coker writes:
What's a good webmail system to use?

squirrelmail has proved the least painful (they _all_ are) for me.

There are several in Debian, I've had experience with IMP, but that 
experience has been mostly painful.  Upgrading it is always difficult, and 
the packages insist on Postgresql even though it's not needed at all unless 
you have a cluster.

How do the other webmail systems compare?

I've had acmemail running for some time, but it's bugginess and 
 _slw_ness closely resemble certain MS-prdoucts.

All the others I've had a look at required something I'm not willing to 
 install on my servers, so it got to be one that's either perl, C, or 
 PHP, and actually _works_.

squirrelmail was the only one I could find which matched those 
 requirements, but YMMV, of course.

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /




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Re: DNS weirdness

2002-04-18 Thread Robert Waldner


On Thu, 18 Apr 2002 14:13:57 +0200, Russell Coker writes:
I've attached a brief tcpdump snippet showing an unusually large DNS delay.

And there are way more packets involved than should be necessary.

Could you post (or just send me) a full dump (in binary format),
 snaplen 1500?

cheers,
rw
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Re: web-based/gui firewall administration

2002-04-16 Thread Robert Waldner


On Mon, 15 Apr 2002 14:12:03 PDT, Jeremy C. Reed writes:
I have a customer that wants a easy-to-use interface for configuring a
firewall.

Basically, the firewall will do IP forwarding, maybe IP masquerading, and
packet filtering.

I already know how to do it manually. But we are looking for configuring
the address translation and selecting what ports to allow, etc.

Have a look at fwbuilder, .deb's are in testing and unstable. 
 Basically, it (kind of) emulates a Checkpoint GUI.

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /



-- 
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Re: tool(s) to analyze contents of tcp-sessions

2002-03-05 Thread Robert Waldner


On Mon, 04 Mar 2002 17:53:12 +0100, Olivier Macchioni writes:
 I'm looking for a tool with which I could analyze the contents 
  (payload) of captured tcp-sessions.

tcpflow

Ah, yes. That one comes _very_ close to what I need. Thanks.

BTW, ethereal I already know, but it's not too useful when only the 
 payload of packets are of interest and you have to analyze ~ 20 MB of 
 data out of ~ 30 different, mostly simultaneous, connections.

cheers,
rw
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Re: Best mail setup?

2002-03-01 Thread Robert Waldner


On Thu, 28 Feb 2002 19:41:16 EST, D. Clarke writes:
I was wondering what your recommendations would be for 50 (and growing)
virtual hosts.  We want something that doesn't require a seperate system
user for each virt-user account, and something that's relatively easy to
configure.

Your preferred MTA (sendmail, postfix, whatever) and cyrus as MDA+IMAP4/
 POP3-server.

No need for shell-accounts et al and runs stable whereever I've used it.

cheers,
rw
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Re: Traffic monitoring/logging question

2002-03-01 Thread Robert Waldner


On 01 Mar 2002 14:22:43 +1100, Kevin Littlejohn writes:
Be aware that on-the-wire counting will give you traffic counts
inclusive of packet overhead, whereas counting in squid will give you
only the size of the content in question.  Don't do math on these
things, as one rather large provider used to do ;)

Why go to trouble with accounting in squid? Just account on the 
 insode interfaces, compare with the totals of outside and you're 
 set. ipac-ng can do this, only the png-generation is severely broken 
 at the moment (I'm debugging it right now).

Be aware of media-specific packet wrapping sizes, and be aware of the
difference between the size of the content, and the size of the
content + IP headers.

Just account on the same layer everywhere and you can split the bill 
 from the ISP in the proper %s.

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /





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Re: Best mail setup?

2002-03-01 Thread Robert Waldner

On Thu, 28 Feb 2002 19:41:16 EST, D. Clarke writes:
I was wondering what your recommendations would be for 50 (and growing)
virtual hosts.  We want something that doesn't require a seperate system
user for each virt-user account, and something that's relatively easy to
configure.

Your preferred MTA (sendmail, postfix, whatever) and cyrus as MDA+IMAP4/
 POP3-server.

No need for shell-accounts et al and runs stable whereever I've used it.

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /




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Re: Traffic monitoring/logging question

2002-03-01 Thread Robert Waldner

On 01 Mar 2002 14:22:43 +1100, Kevin Littlejohn writes:
Be aware that on-the-wire counting will give you traffic counts
inclusive of packet overhead, whereas counting in squid will give you
only the size of the content in question.  Don't do math on these
things, as one rather large provider used to do ;)

Why go to trouble with accounting in squid? Just account on the 
 insode interfaces, compare with the totals of outside and you're 
 set. ipac-ng can do this, only the png-generation is severely broken 
 at the moment (I'm debugging it right now).

Be aware of media-specific packet wrapping sizes, and be aware of the
difference between the size of the content, and the size of the
content + IP headers.

Just account on the same layer everywhere and you can split the bill 
 from the ISP in the proper %s.

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /




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Re: webmail for debian

2002-02-08 Thread Robert Waldner


On Fri, 08 Feb 2002 14:52:29 +0100, [EMAIL PROTECTED] writes:
does anybody know some webmail system for debian?

squirrelmail (from unstable, but getting it to work on a stable box is 
 a one-line - fix) works pretty well here.

cheers,
rw
-- 
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\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /





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Re: webmail for debian

2002-02-08 Thread Robert Waldner


On Fri, 08 Feb 2002 10:52:47 -0400, [EMAIL PROTECTED] writes:
Any hint about the fix for squirrel?

dpkg -i squirrelmail-package
vi /var/lib/dpkg/status
change the dependency from perl-base to perl or perl-5.005 (or 
 the other way around, can't remember)
apt-get install squirrelmail

cheers,
rw
-- 
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\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /





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Re: webmail for debian

2002-02-08 Thread Robert Waldner

On Fri, 08 Feb 2002 14:52:29 +0100, [EMAIL PROTECTED] writes:
does anybody know some webmail system for debian?

squirrelmail (from unstable, but getting it to work on a stable box is 
 a one-line - fix) works pretty well here.

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /




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Re: webmail for debian

2002-02-08 Thread Robert Waldner

On Fri, 08 Feb 2002 10:52:47 -0400, [EMAIL PROTECTED] writes:
Any hint about the fix for squirrel?

dpkg -i squirrelmail-package
vi /var/lib/dpkg/status
change the dependency from perl-base to perl or perl-5.005 (or 
 the other way around, can't remember)
apt-get install squirrelmail

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /




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Re: woody's sendmail on potato

2002-02-04 Thread Robert Waldner


On Mon, 04 Feb 2002 15:00:45 +0100, Davi Leal writes:
  Not sure but it's safe to use Postfix, so why not use that?
 
 Let's not get into religious arguments, since that's not the question
 asked.  He's got a running sendmail config; upgrading to a new version is
 less work than converting to a different mail system.

Yes, this is the point.

However, I failed at this conversion, so I'm now running the stable 
 sendmail on a testing/unstable box...

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /





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Re: woody's sendmail on potato

2002-02-04 Thread Robert Waldner

On Mon, 04 Feb 2002 15:00:45 +0100, Davi Leal writes:
  Not sure but it's safe to use Postfix, so why not use that?
 
 Let's not get into religious arguments, since that's not the question
 asked.  He's got a running sendmail config; upgrading to a new version is
 less work than converting to a different mail system.

Yes, this is the point.

However, I failed at this conversion, so I'm now running the stable 
 sendmail on a testing/unstable box...

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /




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Re: PPOP3 Webmail

2002-01-21 Thread Robert Waldner


On Sun, 20 Jan 2002 12:08:46 EST, [EMAIL PROTECTED] writes:
I agree! I have squirrelmail (which is still broken in Debian),
...

What exactly is broken in squirrelmail? Works just fine here:
ii  cyrus-admin1.5.19-2   Cyrus mail system (administration tool)
ii  cyrus-common   1.5.19-2   Cyrus mail system (common files)
ii  cyrus-imapd1.5.19-2   Cyrus mail system (IMAP support)
ii  cyrus-pop3d1.5.19-2   Cyrus mail system (POP3 support)
ii  squirrelmail   1.2.2-1Webmail for nuts
ii  php4   4.0.3pl1-0pota A server-side, HTML-embedded scripting langu

cheers,
rw
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Re: BGP / Zebra

2002-01-11 Thread Robert Waldner


On Fri, 11 Jan 2002 10:39:01 +0100, =?iso-8859-1?Q?Anders_Gj=E6re?= writes:
I have a router running BGP / Zebra, and it seems like the maximum
throughput is 25Mbit/s

BGP and Zebra using 100% cpu together, and alternating on witch using
most.

The machine is a pII 233 with 196mb ram.

What hardware/config-changes do i need to be able to route 100Mbit/s?

Uhm, someone correct me if I'm wrong, but shouldn't Zebra just update 
 the kernel's routing-table and let it then handle the actual 
 packet-juggling?

If that is so, your problem probably lies elsewhere...

cheers,
rw
-- 
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\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /





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Re: BGP / Zebra

2002-01-11 Thread Robert Waldner

On Fri, 11 Jan 2002 10:39:01 +0100, =?iso-8859-1?Q?Anders_Gj=E6re?= writes:
I have a router running BGP / Zebra, and it seems like the maximum
throughput is 25Mbit/s

BGP and Zebra using 100% cpu together, and alternating on witch using
most.

The machine is a pII 233 with 196mb ram.

What hardware/config-changes do i need to be able to route 100Mbit/s?

Uhm, someone correct me if I'm wrong, but shouldn't Zebra just update 
 the kernel's routing-table and let it then handle the actual 
 packet-juggling?

If that is so, your problem probably lies elsewhere...

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /




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Re: naver-mailer

2002-01-02 Thread Robert Waldner


On Mon, 31 Dec 2001 20:53:03 +0100, Russell Coker writes:
On Mon, 31 Dec 2001 15:28, Russell Coker wrote:
 Every time I post here I get a response that looks like a bounce in a
 strange language from naver-mailer.  Here's the headers:


 Here's my solution to the naver-mailer problem:
 ipchains -A input -j DENY -s 211.218.150.15

They are persistant bastards and have multiple machines in that netblock.  So 
I've changed it to the following:

ipchains -A input -j DENY -s 211.218.150.0/24

So they will deliver their annoying bounces via the backup-MXs...

This is something wich IMHO should be addressed at MTA-level, not IP.

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /





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Re: naver-mailer

2002-01-02 Thread Robert Waldner

On Mon, 31 Dec 2001 20:53:03 +0100, Russell Coker writes:
On Mon, 31 Dec 2001 15:28, Russell Coker wrote:
 Every time I post here I get a response that looks like a bounce in a
 strange language from naver-mailer.  Here's the headers:


 Here's my solution to the naver-mailer problem:
 ipchains -A input -j DENY -s 211.218.150.15

They are persistant bastards and have multiple machines in that netblock.  So 
I've changed it to the following:

ipchains -A input -j DENY -s 211.218.150.0/24

So they will deliver their annoying bounces via the backup-MXs...

This is something wich IMHO should be addressed at MTA-level, not IP.

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /




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Re: Mailinglist software recommendations?

2001-12-10 Thread Robert Waldner

On Sat, 08 Dec 2001 20:57:17 +1100, Jeremy Lunn writes:
On Fri, Dec 07, 2001 at 03:41:11PM +0100, Marcel Hicking wrote:
...
 b) Some admin web interface for the guys going
 to use and feed the lists. Need to be able to add lists,

Ecartis has this packaged in listar-cgi.

 c) A web interface to (un)subscribe to lists (which I
 could probably do myself ;-)

Not the ability to add/remove lists, though. But that's the only thing
 missing from your list, AFAICT. I wouldn't want that anyway as it 
 would imply to mangle with the MTA (aliases!), and I'd rather do that 
 myself, thankyouverymuch.

I think you can do this with listar-cgi but if not then as you say it's
not much effort to add this functionality.

You can do
- (un/)subscribe
- manage user(s)list config(s)

...

listar/ecartis not only work great, but the main developer is also very 
 responsive when it comes to bugs and/or new features.

cheers,
rw
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\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /




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Re: HTTP put

2001-12-06 Thread Robert Waldner


On Thu, 06 Dec 2001 14:29:24 +0100, Markus Garscha writes:
I'm interested in the technology behind this. how does it work? do these
providers use redirectors - but how to configure when every dialup user
gets a dyn. ip???

On Thu, 06 Dec 2001 15:26:27 +0100, Frank Thesen (serve-it) writes:
I can't tell the technique, but I can tell you examples:

I you go to www.freenet.de or to www.arcor.de to get them as acess
providers.

If you tell me, what I should do, to figure out the technique, I will do it.

Every one of the big access-concentrators can do that. Technically it's 
 a simple filter that is put out of service as soon as it's hit the 
 first time.

Redback, Cisco, ... they're all able to do that since, oh, ages..

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /





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Re: HTTP put

2001-12-06 Thread Robert Waldner

On Thu, 06 Dec 2001 14:29:24 +0100, Markus Garscha writes:
I'm interested in the technology behind this. how does it work? do these
providers use redirectors - but how to configure when every dialup user
gets a dyn. ip???

On Thu, 06 Dec 2001 15:26:27 +0100, Frank Thesen (serve-it) writes:
I can't tell the technique, but I can tell you examples:

I you go to www.freenet.de or to www.arcor.de to get them as acess
providers.

If you tell me, what I should do, to figure out the technique, I will do it.

Every one of the big access-concentrators can do that. Technically it's 
 a simple filter that is put out of service as soon as it's hit the 
 first time.

Redback, Cisco, ... they're all able to do that since, oh, ages..

cheers,
rw
-- 
/ Ing. Robert Waldner | Security Engineer |  CoreTec IT-Security  \
\   [EMAIL PROTECTED]   | T +43 1 503 72 73 | F +43 1 503 72 73 x99 /




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Re: Remote IP for inetd daemon

2001-09-19 Thread Robert Waldner


On Wed, 19 Sep 2001 15:06:24 +0200, Marcel Hicking writes:
The problem is the redirect.
When redirecting, the prog doesn't
get peername anymore.

Ah, thanks!

So now I simply send the IP to stderr and everything´s fine:

  if (getpeername((int) 1,
(struct sockaddr *)  name, (socklen_t *)  namelen) == 0) {
if ((temp_domain = (char *) inet_ntoa(name.sin_addr)))
  fprintf (stderr,%s, temp_domain);

test.sh:
#!/bin/bash
/usr/local/bin/getpeername 2/tmp/peer.ip
exit

It isn´t too useful to have the information but being unable to use it 
 ;-)

cheers,
rw
-- 
/ Ing. Robert Waldner |  [EMAIL PROTECTED]  \
\ Xsoft GmbH  | T: +43 1 796 36 36 692 /



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Re: current cpu usage

2001-09-06 Thread Robert Waldner


On Thu, 06 Sep 2001 09:00:37 EDT, Peter Billson writes:
 sorry, I should have been more specific, I need to get the output in a forma
t
 a script could use.
 I have tried the uptime command however I'm a bit lost at what the numbers
 displayed represent ( how to turn these into a percentage).
 (If indeed this is a good way to do this)

/usr/bin/top -bin 1

cat /proc/meminfo
cat /proc/loadavg

hth+cheers,
rw
-- 
/ Ing. Robert Waldner |  [EMAIL PROTECTED]  \
\ Xsoft GmbH  | T: +43 1 796 36 36 692 /



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Re: current cpu usage

2001-09-06 Thread Robert Waldner


On Thu, 06 Sep 2001 09:34:05 EDT, Peter Billson writes:
 cat /proc/meminfo
 cat /proc/loadavg

 The meminfo would help him but he posted that he didn't understand load
average and, anyway, needs percent of CPU used. You can not calculate
CPU usage from load average.

Not to mention the deep dark magic by which loadavg is generated. I 
 still don´t understand that completely ;-)

And yep, that should´ve read 
 cat /proc/stat
instead. (And no, I don´t know what the values in the first line 
 exactly mean, but as soon as I set up mrtg again, I´m gonna read up on 
 the kernel-sources)

  You could use /proc to get CPU usage but it would be rather involved
to do and why bother when the nice man who wrote top has already done it
for you. :-)

´cause it´s *fun* ;-)

cheers,
rw
-- 
/ Ing. Robert Waldner |  [EMAIL PROTECTED]  \
\ Xsoft GmbH  | T: +43 1 796 36 36 692 /



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Re: SOS Bind

2001-09-04 Thread Robert Waldner


On Tue, 04 Sep 2001 13:12:45 +0200, Craig writes:
I have a debian box running Bind, acting as a primary DNS server. I
have update the serial numbers on the zone files but nothing is
propagating out. Its been about 72 hours now and still has the old
IP of the server. Bind version 8.2.3

Any help would be great appreciated :)

First of all: have you reloaded the zone (`ndc reload $zonemame`)?

What do the logs tell?

cheers,
rw
-- 
/ Ing. Robert Waldner |  [EMAIL PROTECTED]  \
\ Xsoft GmbH  | T: +43 1 796 36 36 692 /



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Re: Confused

2001-08-16 Thread Robert Waldner


 Open my firewall for 113 Auth ... has worked, now
 i need someone or some docs to explain what/how and why :)

Simply put something along the lines of
 auth stream tcp nowait nobody /bin/dd dd if=/dev/urandom bs=32 count=1
in inetd.conf, this will not break anything, leave programs that depend 
on some auth-answer happy, and doesn´t open any security-holes (that 
I´m aware of, someone correct me if I´m wrong).

You could also use that for ident et al (although for ident I use 
 fake_identd).
 
cheers,
rw
-- 
/ Ing. Robert Waldner |  [EMAIL PROTECTED]  \
\ Xsoft GmbH  | T: +43 1 796 36 36 692 /



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Re: Confused

2001-08-16 Thread Robert Waldner


On Thu, 16 Aug 2001 10:58:37 +0200, Michael Wood writes:
 Simply put something along the lines of
  auth stream tcp nowait nobody /bin/dd dd if=/dev/urandom bs=32 count=1
 in inetd.conf, this will not break anything, leave programs
 that depend on some auth-answer happy, and doesn?t open any
 security-holes (that I?m aware of, someone correct me if I?m
 wrong).

hmmm... well, it might break insecure programs connecting to
your ident server.  Also, you're wasting the entropy in your
random number generator.  Why not just cat blah or something
instead?

sure, where I´m worried about the entropy I just generate a file, for 
 example there´s

waldner@ka:~$ ls -al /home/apache/default.ida
-rw-rw-r-- 1 waldner waldner 10240119 Jul 19 19:34 /home/apache/default.ida

Some friends of mine swear by cat´ing their kernel-sources, some by
 /dev/zero. But personally I think that /dev/urandom provides most fun 
 ;-) , although the following is nice, too:

ident stream tcp nowait nobody /usr/bin/nc nc www.microsoft.com 80

Imagine the confusion of the script-kiddies... (and yes, I know that 
 with doing that an open proxy for www.microsoft.com is created, this is 
 just an example, don´t use it like that)

cheers,
rw
-- 
/ Ing. Robert Waldner |  [EMAIL PROTECTED]  \
\ Xsoft GmbH  | T: +43 1 796 36 36 692 /



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Re: q ad ftp- w/o system-accounts

2001-08-01 Thread Robert Waldner


On Tue, 31 Jul 2001 10:17:56 CDT, Haim Dimermanas writes:

 Hmm, I don´t want to cope with LDAP and/or MySQL just for a bunch of
 ftp-accounts (~ 30). Flat berkeley-db-files are much more appealing
 for such small numbers (they´re definitely not supposed to grow, not on
 this box, it´s just that I´m much more security-aware since it was
 hacked not long ago).

 I agree. 30 accounts is not much. Now to say that it's not enough for you
to deploy a scalable (and very secure) solution that would solve your
problem(s), I disagree. I wrote a doc explaining how to install MySQL step
by step. If you keep your installation current and up-to-date, you should be
ok when it comes to security.

I tried, but MySQL is Just Too Much for that box (it´s a lowly 486 w/ 
 32 MB RAM and already running at load 0.8++ most of the time[0]).

Anyway, I´ve now got it (mentioning it here for the sake the 
 search-engines):

proftpd.conf:
AuthUserFile/etc/proftpd.users
AuthGroupFile   /etc/proftpd.groups
RequireValidShell   no
PersistentPasswdoff
Usernobody
Group   nogroup
DefaultRoot ~

proftpd.users:
waldner:crypt()-pw:1000:1000:Robert Waldner,,,:/home/waldner:/bin/false

et voila.

0: mailhub for ~ 3k mails/day, webserver for ~ 400 hits/day, approx. 1200
 dns-queries/day. Man, I *like* the hardware-requiremnts of sane OSs.

cheers,
rw
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Re: q ad ftp- w/o system-accounts

2001-07-30 Thread Robert Waldner


Robert Waldner wrote:
 (This is probably a PAM-question, too, but..)
 
 I just got cyrus to work w/o having system- (eg shell-) accounts, but
  now I need to get ftp to work also :/
 
 proftpd uses PAM, which is good as there´s pam_userdb.so. This far I´m
  sufficiently clued. But I don´t get how I can tell it to set the
  userdir to, let´s say, /home/$luser/ftp based an the key out of the
  .db-file.

On Mon, 30 Jul 2001 08:12:42 EDT, Haim Dimermanas writes:
 I strongly suggest you take a look at ProFTPd with the LDAP or MySQL modules.
You can put all your users information in a directory or an SQL database
(homedir, username, pass, etc) and have the FTP server look in there.

Hmm, I don´t want to cope with LDAP and/or MySQL just for a bunch of 
ftp-accounts (~ 30). Flat berkeley-db-files are much more appealing 
for such small numbers (they´re definitely not supposed to grow, not on 
this box, it´s just that I´m much more security-aware since it was 
hacked not long ago).

 For more info on how to set it up, take a look at the doc I wrote:

 http://dudle.linuxroot.org/docs/proftpd/

Well-written and, seemingly, quite complete, even if I won´t try that 
on my box (see above) ;-)

cheers,
rw
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 PGP signature


q ad ftp- w/o system-accounts

2001-07-29 Thread Robert Waldner


Hi!

(This is probably a PAM-question, too, but..)

I just got cyrus to work w/o having system- (eg shell-) accounts, but 
 now I need to get ftp to work also :/

proftpd uses PAM, which is good as there´s pam_userdb.so. This far I´m 
 sufficiently clued. But I don´t get how I can tell it to set the 
 userdir to, let´s say, /home/$luser/ftp based an the key out of the
 .db-file.

Any hints?

cheers+tia,
rw
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Re: Remote Execution of Scripts

2001-07-25 Thread Robert Waldner


On Tue, 24 Jul 2001 19:01:31 EDT, Gene Grimm writes:
As I am a relative novice system administrator, perhaps someone more
experienced can guide me to the proper way of securely invoking a script on
a remote server. We have two facilities presently, with most of our
equipment in our main office. I am attempting to automate account
maintenance and would like to find information on the proper way to have one
Perl script begin remote execution of scripts on another Linux server.

I´d go for something like
 system(ssh someotherhost command);

You can easily limit the commands the user under which your script on 
 the first host runs with prepending the command in the 
 authorizid_keys-file on the remote host. See the recent
 debian-user - archives for the exact syntax.

cheers,
rw
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Re: ATT public router

2001-06-27 Thread Robert Waldner


On Wed, 27 Jun 2001 02:14:41 EDT, Chris Wagner writes:
A while back, ATT had a publicly accessible router for doing route lookups
and stuff like that.  It supposedly knew about the whole world.  The special
thing about this router was that you didn't need a user name or password to
log on with.  It just gave you the IOS prompt.  I haven't been on this
router for a long time and I can't remember the exact name of it.  It was
something like ip-router.att.net or route.world.att.net.  Does anybody
remember this thing and have the host name?  Thanks.

Why not simply use one of the dozen´s publicly available looking 
 glasses instead? www.traceroute.org

cheers,
rw
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Re: ATT public router

2001-06-27 Thread Robert Waldner

On Wed, 27 Jun 2001 02:14:41 EDT, Chris Wagner writes:
A while back, ATT had a publicly accessible router for doing route lookups
and stuff like that.  It supposedly knew about the whole world.  The special
thing about this router was that you didn't need a user name or password to
log on with.  It just gave you the IOS prompt.  I haven't been on this
router for a long time and I can't remember the exact name of it.  It was
something like ip-router.att.net or route.world.att.net.  Does anybody
remember this thing and have the host name?  Thanks.

Why not simply use one of the dozen´s publicly available looking 
 glasses instead? www.traceroute.org

cheers,
rw
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Re: What Happened to ORBS?

2001-06-07 Thread Robert Waldner

(please don´t send html-mails, thankyouverymuch)

On Tue, 05 Jun 2001 06:46:31 CDT, s u r f l o r i d a writes:
Does anyone know what happened to http://www.orbs.org/ and the
mail servers they had on their blacklist?  Is someone taking it over?

I have searched the news sites and have came up with nothing.

see attached mail.

cheers,
rw
---BeginMessage---

On Fri, 01 Jun 2001 17:44:11 EDT, Noah L. Meyerhans writes:
On Fri, Jun 01, 2001 at 11:21:37PM +0200, Robert Waldner wrote:
 On Fri, 01 Jun 2001 12:04:27 EDT, Noah L. Meyerhans writes:
 Does anybody know what happened to ORBS?  http://www.orbs.org simply
 shows Due to circumstances beyond our control, the ORBS website is no
 longer available.  There's no further explanation.

 Well, according to Alan Brown they were served with 2 NZ High court
  injunctions ordering the removal of several ORBS listings against
  sites inside New Zealand.

 I´d guess a connection there.

I would think so as well, except for the fact that their database is
still working.  It seems that only their web server is down.

It's odd.

Yup. Alan, would you care to comment?

cheers,
rw
-- 
-- I think you should defend to the death their right to
-- march, and then go down and meet them with baseball bats.
-- [Woody Allen ueber den Ku Klux Klan]





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Re: routing routable IPs over non-routable IPs

2001-05-22 Thread Robert Waldner

On Tue, 22 May 2001 01:26:56 EDT, Chris Wagner writes:
We should probably clarify non-routable by saying non-publicly routable.

Well, we could also say RFC1918, couldn´t we ;-?

Routers have no concept of restricted ip ranges other than what is programed
into them.  As long as you are debugging from a place that knows about
your private ip's, there shouldn't be a problem.  At GE we cross privates to
go from public to public all the time.

Well, there are several issues, none of them really bad, but if you 
 want a clean setup..:

- DNS, you´ll have to set up split DNS for your RFC1918- and external 
 IPs
- in Real Life, you sometimes _will_ have to debug from the outside of 
 your network
- in Real Life, someone else _will_ debug from the outside (and quite 
 probably complain about the RFC1918-IPs or simply be fed up)

cheers,
rw
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Re: routing routable IPs over non-routable IPs

2001-05-21 Thread Robert Waldner


On Tue, 22 May 2001 01:26:56 EDT, Chris Wagner writes:
We should probably clarify non-routable by saying non-publicly routable.

Well, we could also say RFC1918, couldn´t we ;-?

Routers have no concept of restricted ip ranges other than what is programed
into them.  As long as you are debugging from a place that knows about
your private ip's, there shouldn't be a problem.  At GE we cross privates to
go from public to public all the time.

Well, there are several issues, none of them really bad, but if you 
 want a clean setup..:

- DNS, you´ll have to set up split DNS for your RFC1918- and external 
 IPs
- in Real Life, you sometimes _will_ have to debug from the outside of 
 your network
- in Real Life, someone else _will_ debug from the outside (and quite 
 probably complain about the RFC1918-IPs or simply be fed up)

cheers,
rw
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Re: routing routable IPs over non-routable IPs

2001-05-21 Thread Robert Waldner

On Mon, 21 May 2001 13:46:14 +1000, Jeremy Lunn writes:
I know this isn't Debian specific.  But I'm just wondering if it's fine
to route routable IP addresses over non-routable IP addresess.

Yes, although many would consider it bad practice (I am an example), 
 because you´ll face trouble when you have to debug something, and have 
 non-routable IPs on some path.

So is it just a matter of setting up something like
/sbin/route -net 10.1.2.0/24 gw 172.16.5.2
on the gateway?

Yes, but you should specify the netmask in 255.x.x.x-notation, route on 
 linux sometimes tends to get classful when facing /-notation...

cheers,
rw
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Re: routing routable IPs over non-routable IPs

2001-05-20 Thread Robert Waldner


On Mon, 21 May 2001 13:46:14 +1000, Jeremy Lunn writes:
I know this isn't Debian specific.  But I'm just wondering if it's fine
to route routable IP addresses over non-routable IP addresess.

Yes, although many would consider it bad practice (I am an example), 
 because you´ll face trouble when you have to debug something, and have 
 non-routable IPs on some path.

So is it just a matter of setting up something like
/sbin/route -net 10.1.2.0/24 gw 172.16.5.2
on the gateway?

Yes, but you should specify the netmask in 255.x.x.x-notation, route on 
 linux sometimes tends to get classful when facing /-notation...

cheers,
rw
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Re: load logging package

2001-02-27 Thread Robert Waldner
On Mon, 26 Feb 2001 18:45:27 -0300, Felipe Alvarez Harnecker writes:
is there a deb package for load logging ? 

i mean a lightweight one, not a cron job that do cat /proc/loadavg 
some.log every minute.

Well, not in any aspect very lightweight, but rather useful: mrtg...

I´m graphing Load-1 and number of processes, which is extremely useful 
 for identifying prime times et al..see
 http://de.stats.san.ka.schas.net/ for an example.

cheers,
rw
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Re: load logging package

2001-02-26 Thread Robert Waldner

On Mon, 26 Feb 2001 18:45:27 -0300, Felipe Alvarez Harnecker writes:
is there a deb package for load logging ? 

i mean a lightweight one, not a cron job that do "cat /proc/loadavg 
some.log" every minute.

Well, not in any aspect very lightweight, but rather useful: mrtg...

Im graphing Load-1 and number of processes, which is extremely useful 
 for identifying prime times et al..see
 http://de.stats.san.ka.schas.net/ for an example.

cheers,
rw
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Re: ADSL problem...

2001-02-02 Thread Robert Waldner
On Thu, 01 Feb 2001 21:43:24 +0100, Jason Quigley writes:
On Thursday, February 1, 2001, at 05:58 PM, Robert Waldner wrote:
  
 Ah, I guess this 3com-stuff comes in form of a PCI-card which connects  
  directly to the copper-wire, then? 

It's actually an external modem which is connected to a peecee either with a l
an card or usb.

When it´s connected to you PC via a LAN card it has to use some 
 protocol other than PPPoA on the LAN side. PPPoA is fine between modem 
 and DSLAM but not for the LAN side.

Are you really sure that it doesn´t use PPPoE[0] on the ethernet side?

cheers,
rw

0: or something like PPTP, which is just plain sick, but in use here in 
   .at nonetheless.


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Re: ADSL problem...

2001-02-02 Thread Robert Waldner
On Fri, 02 Feb 2001 10:21:01 +0100, Jason Quigley writes:
I understand what you're saying. The software for windoze does use pppoe. It's
 a really bizarre utility which creates a pseudo lan device and routes between
 that and the physical lan card. I cannot, however, use an adsl router configu
red for pppoe bring up a connection.

All I really need, I guess, is a way to force the modem to start it's pppoa co
nnection and then connect to the modem via pppoe. As I say, this is a guess - 
a really big guess! :)

Just install the PPPoE-package, the modem does (simplified) nothing 
 else then to deencapsulate the PPP out of the E, then reencapsulates 
 it in A ;-)

So, the proper way to get the modem to initiate the PPPoA-connection is 
 to connect to the modem with PPPoE.

cheers,
rw
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Re: ADSL problem...

2001-02-02 Thread Robert Waldner
On Fri, 02 Feb 2001 19:19:58 +0100, Jason Quigley writes:
I'm not sure if it'll work as I have an ADSL router which does pppoe. This doe
sn't connect so I don't really see what I'll gain from the deb pkg.

sorry I didn´t get that first time. your setup is as follows

PC--- Router  --- Modem

?

Well if your router doesn´t connect I guess you´ll have to talk either 
 to your ISP or the router vendor...your PC only has to speak plain IP/
 ethernet. The dirty work is done by modem and router.

Also, the docs (if they can be called that) which come with the modem tell me 
that you can connect multiple machines to the modem over the lan as long as on
ly one at a time is using a connection to the internet

Now it depends on your setup:

if it´s

PC   ---   modem

only one PC at a time may talk PPPoE to the modem, but sequentially it 
 doesn´t matter if there´s one PC or many.

But if the setup is

PC--- Router  --- Modem

and your router can do NAT you can connect as much PCs as you want.

I think the basic problem is that 3com stuff is crap - always has been IMHO. I
've never liked playing with it - except the Palm Pilot, but then, they didn't
 create and code it! ;-)

Ahemm, maybe you want to do a little ASCII-art so we really understand 
 your setup...before you blame 3com (they make rock-solid 
 ethernet-cards, at least. the 3c509-series was some fscking great 
 stuff).

cheers,
rw
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Re: ADSL problem...

2001-02-01 Thread Robert Waldner

On Thu, 01 Feb 2001 16:23:22 +0100, Jason Quigley writes:
The problem is that the ISP is using PPPoA, as in PPP over ATM.

Ah, I guess this 3com-stuff comes in form of a PCI-card which connects 
 directly to the copper-wire, then?

(btw: PPPoA stands for PPP over AAL5, not ATM. Thats a rather psychic 
 difference, but one nonetheless ;-) RFC2364)

cheers,
rw

  I have been supplied with a 3com homeconnect dual link adsl modem by my is
p. Does anybody 
 know of any Debian (or other Linux distros) to control this rotten equipment


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Re: ADSL modems that work in linux ??

2001-01-23 Thread Robert Waldner

On Wed, 24 Jan 2001 18:54:40 +1300, Daniel Free writes:
 short of this what other adsl options to people know of other than 
buying an ADSL router ?? ie other modem setups, USB or whatever.

here in .at the telco supplies external adsl-modems which connect to 
your equipment via PPTP/ethernet. they are not exactly routers, but 
rather function as a kind of bridge...while this method being *far* 
from optimal there are pptp-clients for linux and they work (Im 
writing this over such a connection ;) ), AFAIR the modems can also do 
PPPoE, but the telco doesnt support this (yet).

manufacturer is Alcatel, my model (for adsl/isdn) is called a 
"SpeedTouch 1000 ADSL", look at 
http://www.alcatel.com/consumer/dsl/supuser.htm , maybe you can find 
something there which fits your needs.

hth,
rw
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Re: mail sorting tool

2001-01-06 Thread Robert Waldner

On Sat, 06 Jan 2001 13:03:19 +1100, Craig Sanders writes:
because POP is not a mail transport protocol. it's not designed to be
one, and can not even be reliably kludged to act like one.

ack. I already stand corrected. see Message-id:
 [EMAIL PROTECTED]. I never ran into that 
sort of problems because I´m not on any lists or the like at home.

Does your ISP offer some kind of smtp-queuing? We do (mail is put into 
a queue, there´s a script watching the dialin-logs, when it sees that 
there´s a queue for that user, sendmail is started with on-the-fly 
rewritten options for that queue, eg smarthost set to the dynamic IP).

Way easier than UUCP (imho) and even working for 
exhaust^Wexchange-boxes at the customer.

cheers,
rw
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Re: Web interface for mail reading?

2001-01-06 Thread Robert Waldner

On Sat, 06 Jan 2001 09:12:03 EST, John Ackermann writes:
I'd like to set up something along the lines of the "mail2web" site for 
my users that would allow them to read and send messages via their POP 
account using a web interface.  The web and mail servers reside on the 
same machine, if that makes it any easier.

Anyone know of a package that will provide that kind of functionality?

I like (and use) acmemail for that, easy to set up and quite flexible.
 http://www.astray.com/acmemail/

hth,
rw
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Re: mail sorting tool

2001-01-04 Thread Robert Waldner

On Thu, 04 Jan 2001 11:44:57 +0100, Stephane Bortzmeyer writes:
On Wednesday 3 January 2001, at 15 h 29, the keyboard of Robert Waldner 
[EMAIL PROTECTED] wrote:

 Uh, why? As far as I understood, Martin has _one_ POP-account 
  (domain-in-a-box this feature is called by us) with his ISP.

Yes. This is what cannot works (despite what ISPs say).

I had that setup running myself, so I can speak both as a user and as 
 an ISP...

 He now can use fetchmail to get the mails, and fetchmail will deliver 
  it to localhost:25, no matter what´s in From, To, Cc, whereever. 

Bcc: ? Mailing lists ? I repeat: it cannot work.

jup, you´re right there. lart($self). only to and cc work.

cheers,
rw
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Re: mail sorting tool

2001-01-03 Thread Robert Waldner

On Wed, 03 Jan 2001 14:52:39 +0100, Stephane Bortzmeyer writes:
On Wednesday 3 January 2001, at 14 h 41, the keyboard of Martin Man 
[EMAIL PROTECTED] wrote:

 small company. Let's say we're getting email for our domain via POP from one
 POP
 account and I've to distribute appropriate email messages to 
 appropriate mailboxes according to To: and Cc: headers.

Why don't you use a proper domain and normal mail forwarding?

make your local mailer (sendmail, exim, whatever) feeling "responsible" 
for the domain and simply use fetchmail to pop the mails and hand them
over to your local mailer. easy and reliable...

hth,
rw
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Re: mail sorting tool

2001-01-03 Thread Robert Waldner

On Wed, 03 Jan 2001 15:21:56 +0100, Stephane Bortzmeyer writes:
On Wednesday 3 January 2001, at 15 h 15, the keyboard of Robert Waldner 
[EMAIL PROTECTED] wrote:

 make your local mailer (sendmail, exim, whatever) feeling "responsible" 
 for the domain and simply use fetchmail to pop the mails

This needs an account on the ISP's machine for every local user. Inconvenient.

Uh, why? As far as I understood, Martin has _one_ POP-account 
 (domain-in-a-box this feature is called by us) with his ISP.

He now can use fetchmail to get the mails, and fetchmail will deliver 
 it to localhost:25, no matter what´s in From, To, Cc, whereever. Only 
 one account needed.

The only problem with a setup like this is, that it´s exploitable by 
spammers, as they can set whatever they wnat in To: or Bcc: and deliver 
it into the box, the local mailer only sees the mails coming from 
localhost and will usually happily deliver them all (but, hey, that´s 
the intention with the local MTA, isn´t it? ;-) ). But as the ISPs 
mailservers are usually quite hardened, this shouldn´t be too much of a 
problem.

hth,
rw
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Re: Debian Slink

2000-12-30 Thread Robert Waldner

On Sat, 30 Dec 2000 03:13:06 +0100, Tobias Geijersson writes:
I have a little problem, I'm using Debian 2.1 on one of our production
servers and now I need to add some packages and don't want to uppgrade
to a newer distribution just yet (we will soon move our servers and make
som big changes so I will do it then).

Well, you could just point your sources.list to potato, apt-get update, 
apt-get install insert needed new packages here and you will upgrade 
only what´s really needed for the new packages. I´m doing this on 2 of 
my servers since potato hit stable and it works just fine (except 
samba...).

Another try would be searching for an old package (you should find some 
in /var/cache/apt-/archives) via http://ftpsearch.ntnu.no and hope 
to find that some mirror still holds slink.

hth,
rw
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Re: Debian Slink

2000-12-30 Thread Robert Waldner

On Sat, 30 Dec 2000 04:47:51 EST, Debian Ghost writes:
What kind of problems does samba have in potato? I was considering doing
some samba stuff, but I run potato on my servers.

none if you run real potato, but when just ever upgrading from slink to 
 the latest packages, eg still running a 2.0.x-kernel, samba2.0.5a-1 
 won´t run because it depends on kernel 2.2. so the real gotcha is that
 this doesn´t show up in the dependencies...

cheers,
rw
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Re: DNS error

2000-12-17 Thread Robert Waldner

 thardferr.com.   IN  SOA 207.174.232.178. abakar.thardferr.com. 
(
  965335400
  10800
  3600
  432000
  38400 )
 thardferr.com.   IN  NS  207.174.232.178
 thardferr.com.   IN  A   207.174.232.177
 www.thardferr.com.   IN  CNAME   thardferr.com.
 mail.thardferr.com.  IN  CNAME   thardferr.com.
 thardferr.com.   IN  MX  10 thardferr.com
   ^^
perhaps a typo, but should there not be a dot after this?

you can also s/"thardferr\.com\."/"@"/ which is much more readable.

I can remember seeing something, that neither SOA nor NS-records may 
point to ip-addresses, only to a-records, so you might want to try 
that...

Another try is to set up a 2nd NS, it´s error-logs are often much more 
verbose than that of the master.

hth,
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OT: working with cisco gear (Re: CISCO -- debian tool(s))

2000-11-18 Thread Robert Waldner

On Sat, 18 Nov 2000 15:08:02 +0100, Dariush Pietrzak writes:
 I was wondering if there were any debian tools used for working with Cisco

there is wonderfull perl module for configuring Cisco routers.
besides that you've got all default tools like telnet;),snmp utils like
mrtg etc..

which are useful unless you have to manage lots of those boxes, 
 maintaining (+backuping!) their configuration, both locally and in 
 general, upgrading them with the latest security fixes etc pp. a bunch 
 of fleas can´t be _that_ much more work ;-) ...

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Re: OT: working with cisco gear (Re: CISCO -- debian tool(s))

2000-11-18 Thread Robert Waldner

On Sat, 18 Nov 2000 17:18:31 +0100, Dariush Pietrzak writes:
 which are useful unless you have to manage lots of those boxes, 

I wouldn't know.
but isn't that what OpenView is for? and is unbeatable in that field?

I consider BrokenView to be in the field of BigBuckMoneyBurn-ware ...

If you´re (for whatever reason) already forced to use expensive (and 
much too often crappy) cisco-gear, I´d guess you don´t want to strangle 
yourself further with moremore not-open-source-software.

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Re: CISCO -- debian tool(s)

2000-11-17 Thread Robert Waldner

On Fri, 17 Nov 2000 15:47:54 +0100, Stephane Bortzmeyer writes:
On Friday 17 November 2000, at 9 h 25, the keyboard of Debian Ghost 
[EMAIL PROTECTED] wrote:

 I was wondering if there were any debian tools used for working with Cisco
 routers and/or other Cisco gear. 

Everything is in Debian packages:

m4 (to create configuration files)
mrtg (to get stats from the boxes)
mon (to monitor the boxes)
telnet (just in case)

and, of course, there´s rtrmon http://www.vix.com/vix/rtrmon/, though 
afaik not yet debian´ized, it does a great job if you have to cope with 
large numbers of routers (especially criscos).

hth,
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