IDS mailing list archives

Re: Snort 2.8.0.1 and No TCP Alerts.


From: Andrea Barisani <andrea () inversepath com>
Date: Mon, 21 Jan 2008 15:55:56 +0000

On Sat, Jan 19, 2008 at 04:01:17PM +0100, Stefano Zanero wrote:
lkgh04 () gmail com wrote:
I setup Snort 2.8.0.1 on debian 4.0.  Everything seems fine except it
doesn't alerts any TCP alerts.     It sees all icmp traffics and logs
all alerts but none of TCP alerts.  I used Idswakeup to test these
rules and none of alerts are firing. In snort forum, there was one
thread related to this type of trouble with 2.6 version.  I tested
with -k none options and it didn't help me out.

IDSWakeup is stateless. Snort 2.8 probably ignores the out-of-state
packets it is producing.

Stefano


Ftester on the other hand is stateful:

http://dev.inversepath.com/trac/ftester

but it's kinda old-fashioned now, it's waiting for a decent rewrite. The
concept is still valid though.

Cheers


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-- 
Andrea Barisani                             Inverse Path Ltd
Chief Security Engineer                     -----> <--------

<andrea () inversepath com>          http://www.inversepath.com
0x864C9B9E 0A76 074A 02CD E989 CE7F AC3F DA47 578E 864C 9B9E
       "Pluralitas non est ponenda sine necessitate"

------------------------------------------------------------------------
Test Your IDS

Is your IDS deployed correctly?
Find out quickly and easily by testing it 
with real-world attacks from CORE IMPACT.
Go to http://www.coresecurity.com/index.php5?module=Form&action=impact&campaign=intro_sfw 
to learn more.
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