I've been tinkering with psad for a little while now and I've been
working it into a small firewall script that's going to be running on
virtual servers. These are going to be running debian etch/lenny and
will have different kernel versions and other things I had to take into
consideration. I'm running these machines on my workstation using
Virtualbox and they're using the closest kernel to those used on the
Now I've ran into trouble with my debian etch test environment, namely
it won't show the scans with the Status command.
I get the following output(Some info stripped):
[+] psad (pid: 5341) %CPU: 0.0 %MEM: 7.9
Running since: Mon Mar 15 12:25:40 2010
Command line arguments: -c /etc/psad/psad.conf
Alert email address(es): r...@localhost
[No scans detected]
Netfilter prefix counters:
Total scan sources: 0
Total scan destinations: 0
Total packet counters:
If I go to /var/log/psad/ and tail the packet counter I'll get the
debianetch:~# tail /var/log/psad/192.168.1.125/192.168.1.130_packet_ctr
INPUT_eth0_tcp: 1960 [1-65389]
Now this disparity between the packet counts is boggling my mind. I
thought it could be due to my virtual test environment, but this doesn't
happen with debian lenny. I further tested this and it'd lead to the
autoblock activating at the default 15.000packets while it was reporting
only ~12.000 packets.
Some extra information:
Debian Etch machine:
Linux debianetch 2.6.18-6-686 #1 SMP Tue Mar 23 11:40:03 UTC 2010 i686
[+] psad v1.4.8, by Michael Rash <m...@cipherdyne.org>
Debian Lenny machine:
Linux debianlenny 2.6.26-2-686 #1 SMP Sat Dec 26 09:01:51 UTC 2009 i686
[+] psad v2.1.3 (file revision: 2181)
I've installed psad using apt-get using the latest stable builds.
I'm hoping someone can give me some pointers on where I could look for
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