Snort mailing list archives
Re: snort configuration in layer 2
From: Matt Kettler <mkettler () evi-inc com>
Date: Tue, 01 Feb 2005 12:19:13 -0500
At 09:28 AM 2/1/2005, Peggy Kam wrote:
Other than running snort in promiscous mode, what else needs be configured to run snort in passive mode on layer 2? I did not seem to find any information anywhere for the configuration on this matter.
Define what you mean by "passive mode on layer 2".. Heck.. define what you mean by "passive mode". If by passive you mean not sending packets, well, that's the default. It only becomes active in this sense if you use flexresp.
Snort in general picks all ethernet frames at a layer 2 level from libpcap, parses past the layer 2 ethernet headers (including VLAN trunk headers) and analyzes them at layer 3 and up.
Once you've got the interface in promisc mode, snort should analyze everything that appears on the interfaces ethernet wire, and generate logged messages, nothing more.
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Current thread:
- Threshold Suppression Not Working Ron Jenkins (Jan 31)
- Re: Threshold Suppression Not Working Alex Butcher, ISC/ISYS (Feb 01)
- <Possible follow-ups>
- RE: Threshold Suppression Not Working Ron Jenkins (Feb 01)
- snort configuration in layer 2 Peggy Kam (Feb 01)
- Re: snort configuration in layer 2 Matt Kettler (Feb 01)
- threshold for alerts but not for logs? Peggy Kam (Mar 01)
- snort configuration in layer 2 Peggy Kam (Feb 01)