Snort mailing list archives
AW: snort filter
From: "Eduard Meiler" <edik () meiler org>
Date: Wed, 26 Sep 2001 22:48:18 +0200
Hallo Erek, the DSN ist not ours. the rule for that is like here, so how I shloud change this ? alert UDP $EXTERNAL_NET 53 -> ?HOME_NET :1023 (msg:"MISC sourse port 53 to < 1024"; classtype bad-unknown; sid:515; rev:2;) regards eduard
-----Ursprungliche Nachricht----- Von: Erek Adams [mailto:erek () theadamsfamily net] Gesendet: Mittwoch, 26. September 2001 22:31 An: Eduard Meiler Cc: snort-users () lists sourceforge net Betreff: Re: [Snort-users] snort filter On Wed, 26 Sep 2001, Eduard Meiler wrote:after installing snort I get a lot of these messages aboutthe traffic: Makeit sense to disable this function, or is there a way to filter the unnecessary information ??It depends.Sep 26 21:00:00 wall snort: [1:515:2] MISC source port 53 to <1024 [Classification: Potentially Bad Traffic] [Priority: 2]: {UDP} 193.141.40.1:53 -> 192.168.7.200:53Consider the source and destination. Source was from xlink1.xlink.net which is a DNS server. Desitnation was a private net. Now if that internal machine made a DNS query then this might be normal, seeing as you can specify the port to connect back on in the BIND configs. Is that one of the DNS servers you use? If not, then something might be up. If so, build a pass rule for it if needed, the use the -o switch to swap the order of the rules. Hope this helps! ----- Erek Adams Nifty-Type-Guy TheAdamsFamily.Net
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Current thread:
- snort filter Eduard Meiler (Sep 26)
- Re: snort filter Erek Adams (Sep 26)
- AW: snort filter Eduard Meiler (Sep 26)
- Re: AW: snort filter Erek Adams (Sep 26)
- AW: AW: snort filter Eduard Meiler (Sep 26)
- Re: AW: AW: snort filter Erek Adams (Sep 26)
- AW: snort filter Eduard Meiler (Sep 26)
- Re: snort filter Erek Adams (Sep 26)