Snort mailing list archives
RE: No Alerts Being Generated
From: "Kaplan, Andrew H." <AHKAPLAN () PARTNERS ORG>
Date: Wed, 6 Oct 2004 08:00:43 -0400
Hi there -- (sorry if this a repeat of a message sent out) I made the change within the snort.conf file you had suggested. I also ran the snort -T command and it ran through the configuration without reporting back any errors. Finally, I installed NeWT, the Windows version of Nessus, on another machine and ran several different tests on the snort box. The tests I ran were portscans and the "SANS Top 20" list. After the scans were finished, I checked the alert file as well as the ACID GUI. Neither one mentioned any alert conditions taking place. As a further test, I changed the !HOME_NET setting back to any to see if that made any difference. It did not. What should I look for next? -----Original Message----- From: Nigel Houghton [mailto:nigel () sourcefire com] Sent: Wednesday, September 29, 2004 4:57 PM To: snort-users () lists sourceforge net Cc: Kaplan, Andrew H. Subject: Re: [Snort-users] No Alerts Being Generated 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. ------_=_NextPart_000_01C4A65B.7895D89C 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>>
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Current thread:
- RE: No Alerts Being Generated Kaplan, Andrew H. (Oct 05)
- <Possible follow-ups>
- RE: No Alerts Being Generated Kaplan, Andrew H. (Oct 06)
- Re: No Alerts Being Generated Martin Roesch (Oct 06)
- RE: No Alerts Being Generated Lance Boon (Oct 06)
- RE: No Alerts Being Generated Kaplan, Andrew H. (Oct 06)
- Re: No Alerts Being Generated sekure (Oct 06)
- RE: No Alerts Being Generated Kaplan, Andrew H. (Oct 06)
- RE: No Alerts Being Generated Lance Boon (Oct 06)
- RE: No Alerts Being Generated Kaplan, Andrew H. (Oct 06)
- RE: No Alerts Being Generated Michael Steele (Oct 06)