Snort mailing list archives
Re: Snort not alerting although tcpdump shows packet
From: "Al Lewis (allewi)" <allewi () cisco com>
Date: Fri, 17 Apr 2015 13:08:54 +0000
See the manual on IDS mode: http://manual.snort.org/node6.html Albert Lewis QA Software Engineer SOURCEfire, Inc. now part of Cisco 9780 Patuxent Woods Drive Columbia, MD 21046 Phone: (office) 443.430.7112 Email: allewi () cisco com From: Kumarswamy H N (kumhn) Sent: Friday, April 17, 2015 8:06 AM To: Gaurav Srivastava; snort-users () lists sourceforge net Subject: Re: [Snort-users] Snort not alerting although tcpdump shows packet Snort will only alert if your traffic matches any of the snort rules with action set to alert. So you must provide a configuration file which includes an appropriate rule to alert for your traffic. To start with, you can add a simple rule to snort.conf that matches your traffic or enable appropriate rule protocol-icmp.rules . Regards, Kumar From: Gaurav Srivastava [mailto:gaurav.srivastava7 () gmail com] Sent: Friday, April 17, 2015 5:16 PM To: snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net> Subject: [Snort-users] Snort not alerting although tcpdump shows packet Dear all, I have a strange issue. I am running snort to observe traffic mirrored from another VM. But Snort is not alerting. To verify whether the packets are received or not I did a tcpdump using following command sudo tcpdump -w icmp.pcap -i eth0 icmp And when I read the file using snort using below command: snort -r icmp.pcap It displays the ICMP packet logs. But the alert was not generated when snort was running. Please suggest. I am stuck here. Thanks and Regards, Gaurav
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Current thread:
- Snort not alerting although tcpdump shows packet Gaurav Srivastava (Apr 17)
- Re: Snort not alerting although tcpdump shows packet Kumarswamy H N (kumhn) (Apr 17)
- Re: Snort not alerting although tcpdump shows packet Al Lewis (allewi) (Apr 17)
- Re: Snort not alerting although tcpdump shows packet Kumarswamy H N (kumhn) (Apr 17)