Snort mailing list archives
RE: Help with pass rule
From: Erek Adams <erek () theadamsfamily net>
Date: Thu, 29 Aug 2002 07:31:34 -0700 (PDT)
On Thu, 29 Aug 2002 francisv () dagupan com wrote:
I have defined the following: var HOME_NET 192.168.0.0/22 var SERVERS_NET 192.168.1.128/25 var DIALUP_NET 192.168.1.0/25 var EXTERNAL_NET !$HOME_NET However, there are still things that are not clear to me. If I changed the ordering of snort to pass->alert->log instead of alert->pass->log using option "o", why do I still get alerts from scan proxy/socks alert even if I allowed it to pass? pass tcp $EXTERNAL_NET any -> $HOME_NET 8080 pass tcp $EXTERNAL_NET any -> $HOME_NET 3128 pass tcp $EXTERNAL_NET any -> $HOME_NET 1080 Is it a bug or a feature?
Feature. :) If you look you'll see that what generated those alerts isn't a rule, but a preprocessor. spp_portscan or spp_portscan2 aren't affected by the pass rules. They only use the portscan_ignorehosts config option. If you would like to ignore this traffic and lighten the load on snort, then use a BPF filter. Start snort with somthing like "snort <your options> 'not (net 192.168.1.128/25 and port 1080) and not (net 192.168.1.0/25 amd port 3128)'". See the tcpdump man page for more info on how to write the BPF filters. Cheers! ----- Erek Adams Nifty-Type-Guy TheAdamsFamily.Net ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- Help with pass rule francisv (Aug 27)
- Re: Help with pass rule Erek Adams (Aug 28)
- <Possible follow-ups>
- RE: Help with pass rule francisv (Aug 28)
- RE: Help with pass rule Erek Adams (Aug 28)
- RE: Help with pass rule francisv (Aug 28)
- RE: Help with pass rule Erek Adams (Aug 29)
- RE: Help with pass rule francisv (Aug 29)
- RE: Help with pass rule Erek Adams (Aug 29)
- RE: Help with pass rule Erek Adams (Aug 29)
- RE: Help with pass rule Erek Adams (Aug 31)