Snort mailing list archives
Re: A Couple of Questions
From: Eli Stair <estair () tardis ath cx>
Date: Fri, 31 Jan 2003 14:20:15 -0500
Lars, that sounds (to me) like it belongs in a NM package like Nagios or OpenNMS, snort doesn't sound like the right place to be doing it (IMO). Although your net management software has no business (IMO) listening to the wire to check for damaged frames, etc. And hardware errors like that would be unlikely to make it above the data link layer, and thus not be detected by snort anyhow. Feel free to correct me if I'm wrong, anyone :) /eli On Fri, 31 Jan 2003 10:37:47 -0800 "Lars Borland" <lborland () TriadAssoc com> wrote:
Does anyone have an answer to my 2nd question? Has anyone written a rule for, or been able to use Snort to detect signs of a failing NIC? I don't know the terminology off-hand but a dying NIC may start to "yell" at the network, causing the surrounding NICs to spend a lot of time dropping packets not specifically destined for them (they still have to look at the packets to know to drop them). The NIC on the offending machine still appears to work somewhat but performance on the machine is very poor. Also, the surrounding network (whatever is in the same collision domain) will suffer. Incoming tech calls will be something like "Are things running kind of slow today?". I've dealt with this sort of thing in the past and have luckily come across the failing NIC by chance. I'd like to be able to pinpoint this sort of thing more easily using Snort if at all possible. Please let me know if you're aware of any such rule.
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Current thread:
- A Couple of Questions Lars Borland (Jan 30)
- <Possible follow-ups>
- RE: A Couple of Questions Morgan R. Elmore (Jan 30)
- RE: A Couple of Questions Lars Borland (Jan 31)
- Re: A Couple of Questions Eli Stair (Jan 31)
- RE: A Couple of Questions twig les (Jan 31)
- RE: A Couple of Questions Lars Borland (Jan 31)