Re: Bug#130876: Very definitely a bug, security

2002-01-25 Thread David B Harris
On Sat, 26 Jan 2002 05:01:14 +
Lazarus Long <[EMAIL PROTECTED]> wrote:
> This is definitely a security risk.  There is no reason that such
> information should be exposed to attackers.  Just because FreeBSD has
> some lame security practices doesn't mean Debian has to emulate them.
> (If I ran it, I'd file a bug there as well.)

I agree that this is exposing information that can be used by an
attacker to aid them in their exploits. On the other hand, the purpose
of the change was a good one; it's hard to tell if you're running a
vulnerable SSH in Stable, since the version string is the same as the
stock upstream source, while the Debian diffs will have many added
patches.

Is there any way this can be run-time configurable?

-- 
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\Clan Barclay  Either action, or death./
 `---==-=-=-=-===-=---=--='



Re: Bug#130876: Very definitely a bug, security

2002-01-25 Thread Lazarus Long
severity 130876 grave
thanks

On Sat, Jan 26, 2002 at 02:47:20AM +, Jonathan D. Amery wrote:
 > Subject: Bug#130876: Not a bug.
 > 
 > severity 130876 wishlist
 > thanks
 > 
 >  This is not a bug.  

This is definitely a security risk.  There is no reason that such
information should be exposed to attackers.  Just because FreeBSD has
some lame security practices doesn't mean Debian has to emulate them.
(If I ran it, I'd file a bug there as well.)

Post your root password and IP address if you think obscurity is
irrelevant.  (You are twisting a comment about *source* being available
for peer review in the crypto community, not about site-specifics being
open to all.)

/etc/issue and /etc/issue.net are conffiles, so the site admin can
choose to stop broadcasting information to any and all attackers that
may aid them in the process.  Yet ssh 1:3.0.2p1-5 intends to make that
irrelevant for any host running it on a public interface.  This is a
significant security hole that -5 opens, that was not open in -4, and
needs to be addressed ASAP.

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Re: Bug#130876: Very definitely a bug, security

2002-01-25 Thread Alex Pennace

On Sat, Jan 26, 2002 at 05:00:52AM +, Lazarus Long wrote:
> Post your root password and IP address if you think obscurity is
> irrelevant.  (You are twisting a comment about *source* being available
> for peer review in the crypto community, not about site-specifics being
> open to all.)

Apples to oranges. Passwords are successfully obscure because there
are lots of them. There are not nearly enough seperate flavors of ssh
to help obscurity. Meanwhile, having the Debian string in the ssh
identification can help make tracking down issues relating to a
particular ssh package easier.

By the way, my IP is 129.63.206.105.

I disagree that this is a grave bug in any way. Luckily, this bug
isn't keeping other ssh changes out of testing.


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Re: Bug#130876: Very definitely a bug, security

2002-01-25 Thread David B Harris

On Sat, 26 Jan 2002 05:01:14 +
Lazarus Long <[EMAIL PROTECTED]> wrote:
> This is definitely a security risk.  There is no reason that such
> information should be exposed to attackers.  Just because FreeBSD has
> some lame security practices doesn't mean Debian has to emulate them.
> (If I ran it, I'd file a bug there as well.)

I agree that this is exposing information that can be used by an
attacker to aid them in their exploits. On the other hand, the purpose
of the change was a good one; it's hard to tell if you're running a
vulnerable SSH in Stable, since the version string is the same as the
stock upstream source, while the Debian diffs will have many added
patches.

Is there any way this can be run-time configurable?

-- 
 .--=-=-=-=--=---=-=-=.
/David Barclay HarrisAut agere, aut mori.  \
\Clan Barclay  Either action, or death./
 `---==-=-=-=-===-=---=--='


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Re: Bug#130876: Very definitely a bug, security

2002-01-25 Thread Lazarus Long

severity 130876 grave
thanks

On Sat, Jan 26, 2002 at 02:47:20AM +, Jonathan D. Amery wrote:
 > Subject: Bug#130876: Not a bug.
 > 
 > severity 130876 wishlist
 > thanks
 > 
 >  This is not a bug.  

This is definitely a security risk.  There is no reason that such
information should be exposed to attackers.  Just because FreeBSD has
some lame security practices doesn't mean Debian has to emulate them.
(If I ran it, I'd file a bug there as well.)

Post your root password and IP address if you think obscurity is
irrelevant.  (You are twisting a comment about *source* being available
for peer review in the crypto community, not about site-specifics being
open to all.)

/etc/issue and /etc/issue.net are conffiles, so the site admin can
choose to stop broadcasting information to any and all attackers that
may aid them in the process.  Yet ssh 1:3.0.2p1-5 intends to make that
irrelevant for any host running it on a public interface.  This is a
significant security hole that -5 opens, that was not open in -4, and
needs to be addressed ASAP.

-- 
Please (OpenPGP) encrypt all mail whenever possible. Request the following
Public Keys for Lazarus Long <[EMAIL PROTECTED]>

  TypeBits/KeyIDFingerprint   DSA KeyID:  
ElGamal: 2048g/CCB09D64 8270 4B79 CB1E 433B 6214  64EB 9D58 28A9 E8B1 27F4
(old 2001 keys)
ElGamal: 2048g/215A8B4A F258 C2DD 7E9C DCEB E64F  82EC D4BB 3438 8B82 A392



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Re: SpamAssassin (Was Re: SOME ITEMS THAT YOU MAY BE INTERESTED IN OR BE ABLE TO ADVISE ME ON)

2002-01-25 Thread Joey Hess
Oliver M . Bolzer wrote:
> I've heard Razor is (configurabule) part of SpamAssassin. I'd recommend
> disabling that check because somebody is tagging about 1/3 of Bugtraq mail
> in Razor thus sending it to the Spam folder.

Razor only scores 3 points in spamassassin, so a mail would need to
exhibit two more points of spammishness to be flagged by spamassassin.
I've not seen any false positives frm bugtraq. I consider razor mostly
useless by itself, but it's still worth something as a part of a larger
tool.

-- 
see shy jo



Re: SpamAssassin (Was Re: SOME ITEMS THAT YOU MAY BE INTERESTED IN OR BE ABLE TO ADVISE ME ON)

2002-01-25 Thread Joey Hess

Oliver M . Bolzer wrote:
> I've heard Razor is (configurabule) part of SpamAssassin. I'd recommend
> disabling that check because somebody is tagging about 1/3 of Bugtraq mail
> in Razor thus sending it to the Spam folder.

Razor only scores 3 points in spamassassin, so a mail would need to
exhibit two more points of spammishness to be flagged by spamassassin.
I've not seen any false positives frm bugtraq. I consider razor mostly
useless by itself, but it's still worth something as a part of a larger
tool.

-- 
see shy jo


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Re: what is the firewall?

2002-01-25 Thread Josh Frick

Kenneth karlsen wrote:


[EMAIL PROTECTED] wrote:


I am new in debian linux, anyone know what is the good software for fire
wall in debian. and how to instalation.

I am using debian r. 2.2r4.

thx

aku



also apt-get install bastill*
man InteractiveBastille
easy and simple
Kenneth



While you're at it,  Linuxconf isn't too bad either.  The 
http://www.linux-firewall-tools.com site also has a good ipchains 
builder.  And there are some decent GTK firewall builders also,  aren't 
there?


  Josh





Re: what is the firewall?

2002-01-25 Thread Josh Frick

Kenneth karlsen wrote:

> [EMAIL PROTECTED] wrote:
>
>> I am new in debian linux, anyone know what is the good software for fire
>> wall in debian. and how to instalation.
>>
>> I am using debian r. 2.2r4.
>>
>> thx
>>
>> aku
>>
>>
> also apt-get install bastill*
> man InteractiveBastille
> easy and simple
> Kenneth
>
>
>
While you're at it,  Linuxconf isn't too bad either.  The 
http://www.linux-firewall-tools.com site also has a good ipchains 
builder.  And there are some decent GTK firewall builders also,  aren't 
there?

   Josh




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Re: what is the firewall?

2002-01-25 Thread Kenneth karlsen

[EMAIL PROTECTED] wrote:


I am new in debian linux, anyone know what is the good software for fire
wall in debian. and how to instalation.

I am using debian r. 2.2r4.

thx

aku



also apt-get install bastill*
man InteractiveBastille
easy and simple
Kenneth




Re: what is the firewall?

2002-01-25 Thread Martin Peikert
[EMAIL PROTECTED] schrieb:
> 
> I am new in debian linux, anyone know what is the good software for fire
> wall in debian. and how to instalation.
> 
> I am using debian r. 2.2r4.

If you are using kernel 2.2.x (I think this is standard with potato),
ipchains is your friend. Installation: apt-get install ipchains
Read the man page and the howto for the configuration.

If you already use kernel 2.4.x, the netfilter framework using iptables
will do.

Martin
-- 
[EMAIL PROTECTED]Discon GmbH
Internet Solutions   Wrangelstrasse 100
http://www.discon.de/ 10997 Berlin, Germany



what is the firewall?

2002-01-25 Thread aku
I am new in debian linux, anyone know what is the good software for fire
wall in debian. and how to instalation.

I am using debian r. 2.2r4.

thx

aku



Re: how to create MD5 passwords

2002-01-25 Thread Emmanuel Lacour
On Thu, Jan 24, 2002 at 08:56:56AM +0100, Rainer Sigl wrote:
> Hi everyone,
> please can me tell somebody how to make MD5 passwords in order
> to supply it to ftppasswd file?
> 

mkpasswd -H md5 mon_password

mkpasswd --version
GNU mkpasswd 4.5.16


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44-46 rue de l'Ouest  -  75014 Paris   -   France -  M?tro Gait?
Phone: +33 (0) 1 43 35 00 37- Fax: +33 (0) 1 41 35 00 76
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Re: what is the firewall?

2002-01-25 Thread Kenneth karlsen

[EMAIL PROTECTED] wrote:

>I am new in debian linux, anyone know what is the good software for fire
>wall in debian. and how to instalation.
>
>I am using debian r. 2.2r4.
>
>thx
>
>aku
>
>
also apt-get install bastill*
man InteractiveBastille
easy and simple
Kenneth



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Re: what is the firewall?

2002-01-25 Thread Martin Peikert

[EMAIL PROTECTED] schrieb:
> 
> I am new in debian linux, anyone know what is the good software for fire
> wall in debian. and how to instalation.
> 
> I am using debian r. 2.2r4.

If you are using kernel 2.2.x (I think this is standard with potato),
ipchains is your friend. Installation: apt-get install ipchains
Read the man page and the howto for the configuration.

If you already use kernel 2.4.x, the netfilter framework using iptables
will do.

Martin
-- 
[EMAIL PROTECTED]Discon GmbH
Internet Solutions   Wrangelstrasse 100
http://www.discon.de/ 10997 Berlin, Germany


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Re: how to create MD5 passwords

2002-01-25 Thread Florian Friesdorf
On Thu, Jan 24, 2002 at 08:56:56AM +0100, Rainer Sigl wrote:
> Hi everyone,
> please can me tell somebody how to make MD5 passwords in order
> to supply it to ftppasswd file?

mkpasswd - Overfeatured front end to crypt(3)

It's in the whois package.

-- 
 Florian Friesdorf <[EMAIL PROTECTED]>
OpenPGP key available on public key servers

--> Save the future of Open Source <--
-> Online-Petition against Software Patents <-
--> http://petition.eurolinux.org <---


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what is the firewall?

2002-01-25 Thread aku

I am new in debian linux, anyone know what is the good software for fire
wall in debian. and how to instalation.

I am using debian r. 2.2r4.

thx

aku


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Re: how to create MD5 passwords

2002-01-25 Thread Emmanuel Lacour

On Thu, Jan 24, 2002 at 08:56:56AM +0100, Rainer Sigl wrote:
> Hi everyone,
> please can me tell somebody how to make MD5 passwords in order
> to supply it to ftppasswd file?
> 

mkpasswd -H md5 mon_password

mkpasswd --version
GNU mkpasswd 4.5.16


-- 
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44-46 rue de l'Ouest  -  75014 Paris   -   France -  Métro Gaité
Phone: +33 (0) 1 43 35 00 37- Fax: +33 (0) 1 41 35 00 76
mailto:[EMAIL PROTECTED]   -http://www.easter-eggs.com



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Re: SpamAssassin (Was Re: SOME ITEMS THAT YOU MAY BE INTERESTED IN OR BE ABLE TO ADVISE ME ON)

2002-01-25 Thread Luca Filipozzi
On Fri, Jan 25, 2002 at 08:31:24AM +0100, Oliver M . Bolzer wrote:
> I've heard Razor is (configurabule) part of SpamAssassin. I'd recommend
> disabling that check because somebody is tagging about 1/3 of Bugtraq mail
> in Razor thus sending it to the Spam folder.

Or you can add 

whitelist_from [EMAIL PROTECTED]

to your .spamassassin.cf file.

Luca

-- 
Luca Filipozzi
[dpkg] We are the apt. Resistance is futile. You will be packaged.


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Re: SpamAssassin (Was Re: SOME ITEMS THAT YOU MAY BE INTERESTED IN OR BE ABLE TO ADVISE ME ON)

2002-01-25 Thread Oliver M . Bolzer
On Thu, Jan 24, 2002 at 06:03:54PM -0600, Bryan Andersen <[EMAIL PROTECTED]> 
wrote...
 
> My ISP uses SpamAssassin and it works quite nicely.  Not 
> perfectly, but well enough that I like it.  It's filtered 
> out about 8M bytes of spam in the past 16 days.  SpamAssassin 
> puts some new headers into the message that tell it's spam 
> status.  

I've heard Razor is (configurabule) part of SpamAssassin. I'd recommend
disabling that check because somebody is tagging about 1/3 of Bugtraq mail
in Razor thus sending it to the Spam folder.
-- 
Oliver M. Bolzer
[EMAIL PROTECTED]

GPG (PGP) Fingerprint = 621B 52F6 2AC1 36DB 8761  018F 8786 87AD EF50 D1FF


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Re: how to create MD5 passwords

2002-01-25 Thread Florian Friesdorf

On Thu, Jan 24, 2002 at 08:56:56AM +0100, Rainer Sigl wrote:
> Hi everyone,
> please can me tell somebody how to make MD5 passwords in order
> to supply it to ftppasswd file?

mkpasswd - Overfeatured front end to crypt(3)

It's in the whois package.

-- 
 Florian Friesdorf <[EMAIL PROTECTED]>
OpenPGP key available on public key servers

--> Save the future of Open Source <--
-> Online-Petition against Software Patents <-
--> http://petition.eurolinux.org <---



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