Snort mailing list archives
RE: Snort rules questions
From: "Franki" <franki () gshop com au>
Date: Thu, 4 Oct 2001 22:01:01 +0800
IS it possible that snort is running in conjunction with something like portsentry?? we know from previous conversation that ipchains/iptables can stop snort seeing full connects because the firewall cuts it off before it is a full connection... If the box is restarted all the ipchains or tables rules are dropped, and it starts again.. Snort would see stuff initially, and portsentry or whatever added deny rules to the firewall each host thats probing would be getting blocked. then at the end of all that, we have snort running, but logging buggar all because there are already ipchains rules blocking the hosts... if you can, check the ipchains and iptables rules, for ipchains, try: ipchains -nL to get a listing... if there is a massive list of blocked IP's in there, that would be your problem, (or your solution???) just thought I'd mention that... rgds Frank -----Original Message----- From: snort-users-admin () lists sourceforge net [mailto:snort-users-admin () lists sourceforge net]On Behalf Of John Sage Sent: Thursday, 4 October 2001 9:26 PM To: Brian Cc: Erek Adams; Sloan Miller; Snort-Userst@Lists. Sourceforge. Net Subject: Re: [Snort-users] Snort rules questions OK class, let's review: Sloan's running snort in the following context: 1) rules should not be an issue: < 100 no big deal 2) processor should be adequate for a lightly loaded box on DSL 3) ram should be OK, but More is Better(tm) 4) ipchains/iptables: recent threads suggest that snort should be seeing anything that it needs to.. So where are we? I'm still interested (but have nothing to offer ;-) about Sloan's initial statement that "...I started it and it ran fine for about 12 hours with many alerts. Now it will not alert but very rarely about once every 12 hours. I know there is more activity but for some reason snort does not or will not pick it up..." So snort works OK for about 12 hours and *then* starts to get amnesia (sp?).. I still kinda recall threads about this sort of thing from last summer when we were going towards the *.RELEASE.* snort version. Seems snort not seeing stuff after a long while was an issue for some people. Rude hack: set up a cron job and restart snort every 8 hours, rotating logs, and see if anything changes... I dunno.. ..am I crazy? (hmm.. that's a separate issue) - John Brian wrote:
According to Erek Adams:On Tue, 2 Oct 2001, Sloan Miller wrote:Sorry about that I should have mentioned that I am running snort on a DSL connection. This is my home network. Not a great deal of traffic. The
box
is not running X, it was running apache but I disabled it to free up
more
RAM to see if there was an effect. I am running the full set of snort
rules
from snort.org If I remember correctly it is over 100 about 108 or so.Ok, this is wierd. On my testing/devel box, I'm running the rules from
CVS
and I'm at around 640 or so. Unless you've pruned already, those numbers sound _real_ low.You both are off by a mile. By default there are 934 signatures loaded. There are a total of 1163 signatures available if you enable the signatures that are disabled by default. -brian
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Current thread:
- Snort rules questions Sloan Miller (Oct 02)
- Re: Snort rules questions John Sage (Oct 02)
- Re: Snort rules questions Sloan Miller (Oct 02)
- Re: Snort rules questions John Sage (Oct 03)
- Re: Snort rules questions Erek Adams (Oct 03)
- Re: Snort rules questions Sloan Miller (Oct 03)
- Re: Snort rules questions Erek Adams (Oct 03)
- Re: Snort rules questions Brian (Oct 03)
- Re: Snort rules questions Erek Adams (Oct 03)
- Re: Snort rules questions John Sage (Oct 04)
- RE: Snort rules questions Franki (Oct 04)
- Re: Snort rules questions Erek Adams (Oct 04)
- Re: Snort rules questions Sloan Miller (Oct 02)
- Re: Snort rules questions John Sage (Oct 02)