Re: fail2ban vs. syslogd compression

2007-08-30 Thread Jack T Mudge III
On Wednesday 29 August 2007 03:56, G.W. Haywood wrote:
> Most offenders
> are blocked permanently, at the last count we're blocking about 27,750
> ranges.  Our scripts could handle the 'repeat' messages if they needed
> to, but they don't.  The script kiddies don't get five tries, we block
> them after the first. :)

Forgive me, but as I understand IP and the whole DHCP concept and whatnot, IP 
addresses ARE reused after some time. I rarely have the same internet address 
for more than a month -- and if I randomly ended up with one of your blocked 
addresses, wouldn't I be an innocent victim?

Given the dynamic nature of the internet in general, doesn't it make more 
sense to block for, maybe 2 months, tops?

This isn't meant to downcast your job or anything, I'd just like to know the 
reasoning behind permanent versus temporary blocks (I use temporary, and it's 
always done well for me).

fail2ban blocks for 10 minutes; 10 minutes has thus far been enough to stop 
all but the most determined script kiddies, who are then blocked again (and 
again until they stop). Even using a 450mhz pentium II for my 
router/firewall, it's not even a noticeable load on the system.

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Sincerely,
Jack
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Re: fail2ban vs. syslogd compression

2007-08-30 Thread Maxim Kammerer

Ok, thanx to everybody for the advice. I am no step closer to a solution
however. I see different routes:

1) Clarify if it is really true that the message "last message repeated \d+
times" does not always refer to the last message, as suggested in one post.
I thought that syslogd's raison d'etre was exactly to provide a unified
tracking system for log messages, so it really should know where it's
messages came from and should take great pains in keeping its output sound.
Otherwise, that would be a serious bug, wouldn't it? If the messages are
reliable, which I tend to assume, then the obvious patch to fail2ban should
work. Unfortunately I can't read greek, so I don't know if more detailed
problems are mentioned in the referred to post from greek lug.

2) The other idea is to keep seperate temporary logs, with
anti-syslog-compression. it really raises the effort needed to maintain the
system (thus makes it likely to break). 

When I find some time, I'll get in touch with the fail2ban-developers. I am
back on the list once I head something useful.

Thanks again.

Maxim




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Re: missing security updates for powerpc

2007-08-30 Thread Gerfried Fuchs
Hi!

 For your informations:
gpg: Signature made Don 30 Aug 2007 05:14:42 CEST using DSA key ID E68C0092
gpg: BAD signature from "Simon Valiquette (Gulus) <[EMAIL PROTECTED]>"

On Wed, Aug 29, 2007 at 11:15:38PM -0400, Simon Valiquette wrote:
>On security.debian.org, there is no security update available for
> dovecot-common, postfix-policyd and rsync.

 I see that postfix-policyd is missing but I can't agree for dovecot and
rsync.  Seems to be a quite recent upload for dovecot at least because
when I first read your mail and looked I did see the missing dovecot.

 I am willing to prepare a postfix-plicyd stable rebuild, if it isn't
appearing on the security server within the next some hours.

>I would like to know who is responsible for the powerpc security
> build, and makes sure he/she knows about the problem (and ideally
> heard a bit about what happened).

 That's rather something you'll have to ask the DSA and/or security team
and not on a porter's list. :)

>For those that don't want to wait for the upgrade, here the
> simple procedure:
> 
> sudo apt-get -Vu build-dep rsync
> sudo apt-get -Vu source --compile rsync
> dpkg -i rsync_2.6.9-2etch1_powerpc.deb

 Building on your host system might give you a bit more of worries at
times, especially if you have installed backports or unofficial
packages.  I sugguest to build in a clean chroot, like with cowbuilder
(cowdancer package) or pbuilder.

 So long,
Rhonda


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