Re: DNS servers

2002-11-22 Thread Brad Lay
I just wanna add my 2c's here.

 We're discussing the example

cd /service/tinydns/root
./add-host lion.x.mil 1.2.3.4
make

1) Why do you need to use /service?
2) Whats wrong with inetd ?
3) What prevents debian from packaging djbdns in your licence? I'm
reluctant to use djbdns because of this thread and the fact that none of
your software is packaged for Debian. Wouldn't it make sense to change the
way your licence is worded?

[DISCLAIMER: I use bind8, im happy with bind8 and only host ~100 domains,
I'm nobody special.]

--
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Systems Administrator

Samford Net
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W) http://www.samford.net

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Re: Being new to Debian...

2002-11-22 Thread Marc Haber
On Fri, 15 Nov 2002 15:22:27 -0600, Sonny Kupka [EMAIL PROTECTED]
wrote:
Being new to Debian distro, I was just wondering what people's thoughts 
were on running testing in a ISP environment on a main server..

Don't do this. testing is the worst choice when you have to worry
about security. Security-wise, stable is best (the security team
taking care of it). unstable is next since the package maintainer can
upload security updates. These security updates take at least three
days until they migrate to testing, leaving you vulnerable in the mean
time.

If you absolutely must have later versions of certain packages than in
stable, take the unstable package and try building them on a stable
system (effectively backporting them). Then track them yourself,
security wise.

Greetings
Marc

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Re: Bind8 to Bind9

2002-11-22 Thread Marc Haber
On Sat, 16 Nov 2002 15:19:02 -0500, Peter Billson [EMAIL PROTECTED]
wrote:
  I am planning the move from Bind8 to Bind9 on woody and was wondering if anyone has 
any tips, gotchas or pointers I should know before the move.

Here is the script that I intend to use for bind8 to bind9 migration
(moving from a normal bind8 to a chroot-non-root bind9 in the
process). Use at your own risk, and keep a backup of your
configuration.

#!/bin/bash

set -v
set -e

cd /var/local/
mkdir bind
cd bind/
mkdir dev
cp -a /dev/random dev/
chmod 444 dev/random
mkdir -p usr/share/zoneinfo/Europe
cp -a /usr/share/zoneinfo/Europe/Berlin usr/share/zoneinfo/Europe/
mkdir -p var/cache/bind var/run/bind
adduser --ingroup nogroup --uid 130 --disabled-password --gecos
bind,,, --shell /bin/false bind
chown bind:nogroup var/cache/bind var/run/bind
mkdir etc
cd etc/
ln -s /usr/share/zoneinfo/Europe/Berlin localtime
mv /etc/bind/ .
apt-get --download-only install bind9
dpkg --purge bind
apt-get install bind9
sleep 1
kill $(cat /var/run/named.pid)
rm -rf /etc/bind
ln -s /var/local/bind/etc/bind /etc/bind
rndc-confgen  bind/rndc.conf
echo 'pid-file /var/run/bind/named.pid;' 
bind/rndc.addition
 bind/rndc.conf sed -n '/^# Use with the following/,/# End of
named.conf/{/^# U
se with the following/d;/^# End of named.conf/d;s/^# //;p;}' 
bind/rndc.additi
on
jed bind/named.conf bind/rndc.addition
rm bind/rndc.addition
cat  /etc/default/bind9 EOF
CHROOT=/var/local/bind
USER=bind

OPTS=
[ -n $USER ]  OPTS=$OPTS -u $USER
[ -n $CHROOT ]  OPTS=$OPTS -t $CHROOT
EOF
cat  /etc/init.d/bind9 EOF
#!/bin/sh

PATH=/sbin:/bin:/usr/sbin:/usr/bin


# for a chrooted server: -u nobody -t /var/lib/named
OPTS=

test -f /etc/default/bind9  . /etc/default/bind9

test -x /usr/sbin/named || exit 0

case $1 in
start)
echo -n Starting domain name service: named
start-stop-daemon --start --quiet \
--pidfile /var/run/named.pid --exec /usr/sbin/named --
$OPTS
echo .
;;

stop)
echo -n Stopping domain name service: named
/usr/sbin/rndc stop
echo .
;;

reload)
/usr/sbin/rndc reload
;;

restart|force-reload)
$0 stop
sleep 2
$0 start
;;

*)
echo Usage: /etc/init.d/bind
{start|stop|reload|restart|force-reload} 2
exit 1
;;
esac

exit 0
EOF
/etc/init.d/bind9 start


The script will drop you into an editor, asking you to manually
incorporate a pidfile line, and the rndc configuration into
named.conf.

Be aware that you will be without name service for the run time of the
script.

Greetings
Marc

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Re: Perl module for Apache configuration

2002-11-22 Thread Olivier Poitrey
Craig Sanders [EMAIL PROTECTED] writes:

 On Thu, Nov 21, 2002 at 10:34:20AM -0500, Gene Grimm wrote:
 Are there any Perl modules that can help modify a configuration file
 for Apache? 

 libapache-configfile-perl can parse apache config files.  for writing
 them, you're on your own AFAIK (not very hard, it's plain text with a
 well-defined format, easy to generate).

BTW Apache::Admin::Config does the job with respect of the file
indentation. It's not part of Debian but you can find the debian
package at:

  ftp://ftp.rhapsodyk.net/pub/devel/perl/Apache-Admin-Config/.

This module is 1 year old, and it's ready for production
use. Feedback is welcome.

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Re: Being new to Debian...

2002-11-22 Thread
Íà ïò, 2002-11-22 â 12:20, Marc Haber çàïèñà:
 On Fri, 15 Nov 2002 15:22:27 -0600, Sonny Kupka [EMAIL PROTECTED]
 wrote:
 Being new to Debian distro, I was just wondering what people's thoughts 
 were on running testing in a ISP environment on a main server..
 
 Don't do this. testing is the worst choice when you have to worry
 about security. Security-wise, stable is best (the security team
 taking care of it). unstable is next since the package maintainer can
 upload security updates. These security updates take at least three
 days until they migrate to testing, leaving you vulnerable in the mean
 time.
 
   That was true before woody became stable, the new policy is that when
there is a security alert, the secrity team releases for
potato,woody,sarge, and sid, you can check the latest DSAs. So, to be no
the no-so-bleeding edge, you can use testing with security updates, and
live happy :)

   


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Re: DNS servers

2002-11-22 Thread Fred Clausen
Hi All,

I think this thread is becoming less a thread about which nameserver to
use and more people defending the time, money and effort they have
spent learning/writing the particular software package they use.

Of course nobody is going to instantly change their software package and
have to re-learn how it is implemented in the new one. People should
certainly be aware about what is available and feel free to try other
pieces of software but nobody is obligated to use one or the other. People
must accept that different people have different needs (tastes even) and
so may use something else. A comprehensive analysis of what is required in
*your* organisation is needed, then pick software based on that. And if
someone else likes something else, then fine, good for him/her. They may
have different requirements.

To conclude, nobody is forcing anyone to use one software package or the
other. Cool headed analysis is required, not name calling.

Cheers, Fred.

--
Fred Clausen - Systems Administrator
Unique Interactive, part of UBC Media Group plc
Winners of the 2002 CRCA NTL New Media Award

http://www.ubcmedia.com
http://www.uniqueinteractive.co.uk
T: +44 (0)20 7453 1677 F: +44 (0)20 7486 5081



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Re: Being new to Debian...

2002-11-22 Thread Robin Y. Millette
Âàñèë Êîëåâ wrote:

Íà ïò, 2002-11-22 â 12:20, Marc Haber çàïèñà:


On Fri, 15 Nov 2002 15:22:27 -0600, Sonny Kupka [EMAIL PROTECTED]
wrote:


Being new to Debian distro, I was just wondering what people's thoughts 
were on running testing in a ISP environment on a main server..

Don't do this. testing is the worst choice when you have to worry
about security. Security-wise, stable is best (the security team
taking care of it). unstable is next since the package maintainer can
upload security updates. These security updates take at least three
days until they migrate to testing, leaving you vulnerable in the mean
time.



   That was true before woody became stable, the new policy is that when
there is a security alert, the secrity team releases for
potato,woody,sarge, and sid, you can check the latest DSAs. So, to be no
the no-so-bleeding edge, you can use testing with security updates, and
live happy :)

   



Hello Marc, can you point us to a reference explaining this recent 
change of policy? I was under the impression that a stable's security is 
handled for maybe a month after it's replaced with a newest 
distribution, and never heard anything about a change. Thanks.


--
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http://rym.waglo.com


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Re: how to upgrade dozens of debian servers

2002-11-22 Thread Marc Haber
On Mon, 18 Nov 2002 11:28:14 -0800, Kirk Ismay [EMAIL PROTECTED]
wrote:
In a cron job I use the following to alert me when new packages are
available for my systems:

# update Debian package list
0 2 * * *   /usr/bin/apt-get -q update

# This produces a report of updated Debian packages
30 10 * * * /usr/bin/apt-get -s dist-upgrade | /bin/grep Inst

This sends me an email for each system, so I know what needs an upgrade.

When you think about it, it's already in Debian. See the cron-apt
package which does a pretty similiar job.

Greetings
Marc

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Re: DNS servers

2002-11-22 Thread Mark Lijftogt

Before I will start defending Craig, I would like to point out that the
discussion is NOT just about taste. The boat left, and you weren't on
it. It's about how the software is build up, what is put in to the package,
and why the hell people have to think that they are better then the rest by
non-quoting, non-reading, and displaying these featurs in a obnoxious way
by thinking they have a point.

We got 2 packs here, djbdns and bind. The first obnoxious part I'm reffering
to is the attitude of the maintainer, and the crew building the djbdns
pack. 
The second part I find extremly irritating is the amount of people
getting exited by words on their screen, telling them it's way better,
fantastic to work with etc..etc..

And as you have seen I havn't even referred to any technical spec what so
ever wich was/is in debate right now. 

IMO this discussie went astray when the quoting started. If you start
ripping pieces of text apart, and start quoting what you please, you're 
you have missed the context and the point. With this said, I stand with Craig 
for the full 100%, and would love to see some improvements. I might not be 
the best Sysadmin to go in to a discussion on the specs, but I sure as hell 
know when people are screwing with each other. 

The reason I singned up for this was to enjoy the occasional flamewar, get a
bit of info, and try to add a bit where I could. Strange huh.. a friggn'
rookie opening his mouth, asking politly to not piss each other of by
manipulating words.


Mark



On Fri, Nov 22, 2002 at 02:14:17PM +, Fred Clausen wrote:
 Hi All,
 
 I think this thread is becoming less a thread about which nameserver to
 use and more people defending the time, money and effort they have
 spent learning/writing the particular software package they use.
 
 Of course nobody is going to instantly change their software package and
 have to re-learn how it is implemented in the new one. People should
 certainly be aware about what is available and feel free to try other
 pieces of software but nobody is obligated to use one or the other. People
 must accept that different people have different needs (tastes even) and
 so may use something else. A comprehensive analysis of what is required in
 *your* organisation is needed, then pick software based on that. And if
 someone else likes something else, then fine, good for him/her. They may
 have different requirements.
 
 To conclude, nobody is forcing anyone to use one software package or the
 other. Cool headed analysis is required, not name calling.
 
 Cheers, Fred.
 
 --
 Fred Clausen - Systems Administrator
 Unique Interactive, part of UBC Media Group plc
 Winners of the 2002 CRCA NTL New Media Award
 
 http://www.ubcmedia.com
 http://www.uniqueinteractive.co.uk
 T: +44 (0)20 7453 1677 F: +44 (0)20 7486 5081
 
 
 
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-- Mark Lijftogt
-- http://sans.rondom.org
-- http://www.lijftogt.nl


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Re: Being new to Debian...

2002-11-22 Thread Marc Haber
On 22 Nov 2002 14:58:41 +0100, ÷ÁÓÉÌ ëÏÌÅ× [EMAIL PROTECTED] wrote:
   That was true before woody became stable, the new policy is that when
there is a security alert, the secrity team releases for
potato,woody,sarge, and sid, you can check the latest DSAs. So, to be no
the no-so-bleeding edge, you can use testing with security updates, and
live happy :)

http://www.debian.org/security/faq#handling

Q: How is security handled for testing and unstable?

A: The short answer is: it's not. Testing and unstable are rapidly
moving targets and the security team does not have the resources
needed to properly support those. If you want to have a secure (and
stable) server you are strongly encouraged to stay with stable.
However, the security secretaries will try to fix problems in testing
and unstable after they are fixed in the stable release.

The web page dates Nov 14, 2002.

Greetings
Marc

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Re: DNS servers

2002-11-22 Thread D. J. Bernstein
Sanders writes:
 the alleged documentation for tinydns-data is atrocious too, it's ALL
 done by example, no syntax definition, no overview.

In fact, http://cr.yp.to/djbdns/tinydns-data.html contains the syntax
definition, a bunch of examples, and a link to a tutorial page.

  [ the tinydns data syntax is ``bizarre and broken'' because ]
 the PTR record is automagically created when you create the A record

In fact, you're perfectly free to create just an A record (+fqdn:ip),
just a PTR record (^blah.arpa:fqdn), just an MX record (@fqdn::mx), just
an NS record (fqdn::ns), just an SOA record (Z...), etc. You can play
with TTLs, serial numbers, and so on, in as much detail as with BIND.

Or you can work with slightly higher-level concepts such as hosts
(=fqdn:ip, creating A+PTR), mail exchangers (@fqdn:ip, creating MX+A),
and name servers (.fqdn:ip, creating SOA+NS+A)---concepts that BIND
doesn't support because they can involve more than one zone.

 get this, it really takes the cake, either or both of the A  PTR
 records are completely ignored unless there are appropriately
 corresponding NS records somewhere in the file.

In fact, the text you're talking about---``Remember to specify name
servers for some suffix of fqdn; otherwise tinydns will not respond to
queries about fqdn''---refers to a basic part of the DNS architecture.
The equivalent BIND rule is that every record needs to be in a zone.

 you can't find the A records for a given hostname just by searching
 for the = lines, you also have to parse every other line in case an
 A record is automagically defined elsewhere, e.g. in  or . or @
 lines.

If you want a program to work with A records rather than higher-level
concepts, you can use tinydns-get to do a particular address lookup, or
you can use the following script to print out every address and name:

   #!/bin/sh
   sed 's/[ ]*$//' /service/tinydns/root/data | awk -F: '
 function printx(type) { 
   if (!match($3,/\./)) $3 = $3 . type . substr($1,2)
   sub(/^\./,,$3)
   print $2,$3
 }
 /^@/ { if ($2) printx(mx) }
 /^[\.]/ { if ($2) printx(ns) }
 /^[=+]/  { if ($2) print $2,substr($1,2) }
   '

This is another example of how easy it is to parse the tinydns
configuration syntax. Can you show me a script for BIND that reliably
does the same thing? Parse named.conf to figure out the active zone
files; parse the zone files; don't forget to deal with $ORIGIN and
$INCLUDE and $GENERATE ...

Of course, the above script can easily be modified to change a selected
IP address, or to start your editor on the appropriate line in the data
file, or to adjust TTLs, etc.

---D. J. Bernstein, Associate Professor, Department of Mathematics,
Statistics, and Computer Science, University of Illinois at Chicago


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Re: LDAP and email

2002-11-22 Thread Ehren Wilson
Me and my fellow admins have a decent working solution using debian, 
exim, openldap, tied into pam with uw-imap and pop3, also uses all 
administered through apache w/ php.  You are more than welcome to take a 
look at the current stable release (ugly but works) or our developement 
stuff, doesn't work but the code is readable.  We are currently 
administering email for 40+ domains on this and it works well and is 
fairly easy to implement on a debian box.

Cheers,

Ehren
System Administrator
Echostar Solutions

[EMAIL PROTECTED] wrote:
Has anyone LDAPized their email system, along with /etc/aliases? If
so, can you give me a pointer how you did that?

Thanks,
Tim




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Re: DNS servers

2002-11-22 Thread Toni Mueller

Hi,

On Thu, Nov 21, 2002 at 06:55:52PM +0100, Russell Coker wrote:
 On Thu, 21 Nov 2002 17:53, Toni Mueller wrote:
  There is only one Unix way to use them (fortunately), and that's BIND.
 There is also nsd.  I've spent about 10 minutes playing with nsd and it looks 
 very promising, I've put in some bind zone files and they work.  It was 

ok - I didn't know about nsd.

 LDAP or SQL backed DNS isn't an option unless performance is not required.  A 
 LDAP or SQL query takes far longer than I want my DNS lookups to take.

Here I'd like to re-use the words of DJB: Profile, don't speculate.

Apart from the fact that LDAP (and SQL) performance varies wildly
across different servers - eg. Fefe once claimed that his LDAP server
ran several orders of magnitude faster than OpenLDAP at a time, and
in a special situation that was important for him - we already know
about tinydns' ability to serve some 6000 requests per second on
decent dual cpu PC hardware, and we also know that on average, the
ldapdns by Mrs. Brisby runs twice as fast as tinydns using OpenLDAP.
This software serves it's data directly from the LDAP backend to the
best of my knowledge - having no intermediate format was a design
goal. How fast do you need to get?

 Of course that plan doesn't work so well if you are hired by a company that 
 doesn't see the value of a lab and provides no decent resources for testing.

Hmmm... A company that has no idea of the value of a lab???

 There was one time I was setting up some fully loaded E4500 machines as LDAP 
 servers and I had to use my Thinkpad for some tests because there was nothing 
 else that I could use.  A Thinkpad running Linux is not much good for testing 
 the client and server sides of an operation that will be deployed on an 
 E4500, but it was the best I had.

Ouch!

Ok, define 'lab'...

Having some spare equipment that can be used to set up experimental
networks to check things out is not only a basic business requirement,
but also (mostly) cheap.


Best,
--Toni++


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load average question

2002-11-22 Thread Scott St. John
Hi Gang:

A few weeks ago we talked about me moving a server from BSDi to Debian.  As 
luck
would have it that BSDi server gave out last Monday and I had to move fast 
to replace
it.  Knowing I can do a RH install in about 30 minutes I went the route of 
familiar
territory and installed 7.2 with Sendmail/QPopper/Apache/OpenWebMail.  I am 
paying
for that now with a huge performance problem.  I am seeing Load Averages 
spiking
above 6 during the day.  Hardware is a Dual P3-600 with a gig of ram on a IBM
Netfinity Raid 5 controller.

The owner of the company wants to go back to BSD, but I want to pursue Debian.
So the question is:  is anyone running a similar set up with either Sendmail or
Posrtfix servicing 2,000+ email accounts with any performance issues?

Thank you for your time.

-Scott

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Re: DNS servers

2002-11-22 Thread Bulent Murtezaoglu

[...]

TM ... When I turned
TM from BIND to djbdns, I discovered that I had several errors in
TM my name server setup, despite the fact that I thought I had
TM double-checked each time I messed with the server.  [...]

Just out of curiosity, what kind of errors were these?  

[...]
TM Just the matter of handling the various dots right, and not
TM forgetting the serial number, makes for a lot of chances to
TM mess things up, especially if you're tired.

Of course, but don't be root when you are that tired.  Don't even
sudo.  Surely djbdns can't help there to the extent you imply.

[...]
TM Like checking all the reverse-mapping hassle that's going on
TM on the Internet. Most people don't do it right, no? Doing it
TM right with BIND is work.  [...]

Doing it right usually entails reading RFC-2317 these days.  You will
find that many admins are illiterate when it comes to this, so
they screw it up.  This is not a config file format issue, IMHO.

TM Doing it right with djbdns comes for
TM free if someone likes to delegate the reverse mapping to you,
TM and/or accepts to pull it from you. [...]

Ok, I admit I don't see how.  I'll go read the site when I get a
chance.  I'd love to see the problem I allude to above solved for
free.  Or maybe you mean generating PTR records automatically when A
records are defined, in which case I kinda regret wasting time on
this.

cheers,

BM


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ssh and pam_mkhomedir

2002-11-22 Thread tps
Simce I'm well on my way to being fully LDAP, I decided to try the
pam_mkhomedir module with ssh on a machine that actually will allow
a limited number of users shell access (controlled by the host attribute).
Well, it doesn't work, I think because of the priv. separation that
the Debian package defaults to. The only way to have the /home mode 777,
or owned by sshd, neither of which I'm real keen on. Anyone else run
into this, and actually found a way around it?

Tim

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Re: DNS servers

2002-11-22 Thread Russell Coker
On Fri, 22 Nov 2002 23:35, Toni Mueller wrote:
 Like checking all the reverse-mapping hassle that's going on on
 the Internet. Most people don't do it right, no? Doing it right
 with BIND is work. Doing it right with djbdns comes for free
 if someone likes to delegate the reverse mapping to you, and/or
 accepts to pull it from you.

For a large number of zones forward and reverse are handled by different 
servers and this won't solve the problem (only reduce it's prevalence).

dlint is the way to solve the problem.

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Re: load average question

2002-11-22 Thread Russell Coker
On Fri, 22 Nov 2002 23:51, Scott St. John wrote:
 A few weeks ago we talked about me moving a server from BSDi to Debian.  As
 luck
 would have it that BSDi server gave out last Monday and I had to move fast
 to replace
 it.  Knowing I can do a RH install in about 30 minutes I went the route of
 familiar
 territory and installed 7.2 with Sendmail/QPopper/Apache/OpenWebMail.  I am
 paying
 for that now with a huge performance problem.  I am seeing Load Averages
 spiking
 above 6 during the day.  Hardware is a Dual P3-600 with a gig of ram on a
 IBM Netfinity Raid 5 controller.

 The owner of the company wants to go back to BSD, but I want to pursue
 Debian. So the question is:  is anyone running a similar set up with either
 Sendmail or Posrtfix servicing 2,000+ email accounts with any performance
 issues?

Apart from webmail that should be a trivial load.  Webmail systems seem to 
take up lots of resources in my experience, is it an option to have a 
separate machine for webmail?

-- 
http://www.coker.com.au/selinux/   My NSA Security Enhanced Linux packages
http://www.coker.com.au/bonnie++/  Bonnie++ hard drive benchmark
http://www.coker.com.au/postal/Postal SMTP/POP benchmark
http://www.coker.com.au/~russell/  My home page


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