Well the first thing I see in your file is the EXTERNAL_NET variable is set
to any. You might want to set that to !$HOME_NET for a start.
Second, you can run snort -T -c /etc/snort/snort.conf to test your snort
configuration.
Next thing is to make sure your snort box is listening on a span port of a
switch or a tap or a hub (probably not using one in your case I think) and
that the span port/tap is configured correctly.
Then, if possible, you could try generating some traffic that Snort should
alert on, like maybe a web request for ftp.pl which should set off sid
1107. You could run some nessus tests or just do it manually with a
straightforward http://www.yourwebhost.org/ftp.pl or pick some other simple
rule to test.
On 0, snort-users-request@lists.sourceforge.net allegedly wrote:
3. No Alerts Being Generated (Kaplan, Andrew H.)
--__--__--
Message: 3
From: "Kaplan, Andrew H." <AHKAPLAN@PARTNERS.ORG>
To: "Snort User Group (E-mail)" <snort-users@lists.sourceforge.net>
Date: Wed, 29 Sep 2004 15:35:26 -0400
Subject: [Snort-users] No Alerts Being Generated
This message is in MIME format. Since your mail reader does not understand
this format, some or all of this message may not be legible.
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Content-Type: text/plain;
charset="iso-8859-1"
I completed installing snort 2.2.0 (build 30) and have begun running it. The
ACID GUI and /var/log/snort/alert files have not shown any alerts
even though the program has been running for over an hour. To verify there
were
no syntax errors in the snort.conf file, I ran the following:
snort -c /etc/snort/snort.conf
There were no errors and warnings, and the program appears to be running
properly. Where in snort.conf and elsewhere, should I check for
configuration mistakes? I have included the snort.conf file here. Thanks.
<<snort.conf.29sept04.txt>>
--__--__--
+-----------------------------------------------------------------+
Nigel Houghton Research Engineer Sourcefire Inc.
Vulnerability Research Team
Cat: "Forget red - let's go all the way up to brown alert!"
Kryten: "There's no such thing as a brown alert sir."
Cat: "You won't be saying that in a minute!"
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