Snort mailing list archives
Re: snort inline mode does not capture traffic destined to other machine on the internal network
From: "Al Lewis (allewi)" <allewi () cisco com>
Date: Fri, 8 May 2015 17:07:06 +0000
I think your issue is caused by attempting to use the main interfaces to talk through the subinterfaces. Are you able pass traffic with just “eth0:eth1”? Have you tried not using the main interfaces and creating two subinterfaces on each side? 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: Abdallah Jabbour [mailto:abdjbr () gmail com] Sent: Friday, May 08, 2015 12:16 PM To: snort-users () lists sourceforge net Subject: [Snort-users] snort inline mode does not capture traffic destined to other machine on the internal network Hello , i have setup snort in inline mode and tested it by adding a rule in /etc/snort/rules/local.rules : alert icmp any any -> any any (msg:"Ping Testing"; sid:1000003;rev:1;) i am running snort as a service and i added two pairs of network interfaces to to /etc/sysconfig/snort INTERFACE="eth0:eth0.1::eth1:eth1.1" where eth0.1 and eth1.1 does not have IP address and have enabled promiscuous mode for all network interfaces but in /var/log/snort/alert i get alert from previously defined rule only when i ping an external host or when i ping one of the interfaces of the snort machine i can confirm than snort is running in inline mode and acquiring network traffic from all network interfaces from /var/log/messages afpacket DAQ configured to inline. Acquiring network traffic from "eth0:eth0.1::eth1:eth1.1". Initializing daemon mode Daemon initialized, signaled parent pid: 1726 Reload thread starting... Reload thread started, thread 0x7f2f0055c700 (1746) Checking PID path... PID path stat checked out ok, PID path set to /var/run/ Writing PID "1745" to file "/var/run//snort_eth0:eth0.1::eth1:eth1.1.pid" --== Initialization Complete ==-- Commencing packet processing (pid=1745) Decoding Ethernet device eth1.1 entered promiscuous mode device eth1 entered promiscuous mode device eth0.1 entered promiscuous mode device eth0 entered promiscuous mode i cannot get any traffic local hosts pinging each other ( on the internal network ) . please assist
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Current thread:
- snort inline mode does not capture traffic destined to other machine on the internal network Abdallah Jabbour (May 08)
- Re: snort inline mode does not capture traffic destined to other machine on the internal network Al Lewis (allewi) (May 08)
- Re: snort inline mode does not capture traffic destined to other machine on the internal network Abdallah Jabbour (May 08)
- Re: snort inline mode does not capture traffic destined to other machine on the internal network Abdallah Jabbour (May 08)
- Re: snort inline mode does not capture traffic destined to other machine on the internal network Gregory W. MacPherson (May 09)
- Re: snort inline mode does not capture traffic destined to other machine on the internal network Abdallah Jabbour (May 10)
- Re: snort inline mode does not capture traffic destined to other machine on the internal network Abdallah Jabbour (May 10)
- Re: snort inline mode does not capture traffic destined to other machine on the internal network Abdallah Jabbour (May 08)
- Re: snort inline mode does not capture traffic destined to other machine on the internal network Al Lewis (allewi) (May 08)