Re: Why is this rule still being tripped?

[Martin Roesch <roesch () sourcefire com>]

Have you tried making a negated TRUSTED_NET set and using that instead  
of the global negation?  I need to look at the logic, but I think that  
none of the IPs in TRUSTED_NET can match for the rule to fail.

Have you tried it with just the one net you want to ignore to narrow it  
down to the IP list?

     -Marty

On Jan 9, 2004, at 11:27 AM, Orion Poplawski wrote:

> Running snort 2.1.0.
>
> I've modified the icmp-info.rules to be of the following form:
>
> alert icmp !$TRUSTED_NET any -> $HOME_NET any (msg:"ICMP PING"; itype:  
> 8; icode: 0; sid:384;  classtype:misc-activity; rev:4;)
>
> and have the following NET definitions in snort.conf:
>
> var TRUSTED_NET  
> [65.171.192.0/24,192.168.0.0/24,65.104.69.192/27,207.202.149.0/ 
> 24,12.105.80.64/27,69.9.9.160/27]
> var HOME_NET [65.171.192.0/24,192.168.0.0/24]
>
> but I'm still seeing the ICMP PING (and other) alerts showing up in my  
> ACID console.
>
> from the alert log:
>
> [**] [1:384:4] ICMP PING [**]
> [Classification: Misc activity] [Priority: 3]
> 01/08-16:44:11.055633 65.104.69.201 -> 65.171.192.100
> ICMP TTL:253 TOS:0x0 ID:65224 IpLen:20 DgmLen:1500 DF
> Type:8  Code:0  ID:0   Seq:0  ECHO
>
> --
> Orion Poplawski
> System Administrator                   303-415-9701 x222
> Colorado Research Associates/NWRA      FAX: 303-415-9702
> 3380 Mitchell Lane, Boulder CO 80301   http://www.co-ra.com
>
>
>
> -------------------------------------------------------
> This SF.net email is sponsored by: Perforce Software.
> Perforce is the Fast Software Configuration Management System offering
> advanced branching capabilities and atomic changes on 50+ platforms.
> Free Eval! http://www.perforce.com/perforce/loadprog.html
> _______________________________________________
> 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
--
Martin Roesch - Founder/CTO, Sourcefire Inc. - (410)290-1616
Sourcefire: Intelligent Security Monitoring
roesch () sourcefire com - http://www.sourcefire.com
Snort: Open Source Network IDS - http://www.snort.org



-------------------------------------------------------
This SF.net email is sponsored by: Perforce Software.
Perforce is the Fast Software Configuration Management System offering
advanced branching capabilities and atomic changes on 50+ platforms.
Free Eval! http://www.perforce.com/perforce/loadprog.html
_______________________________________________
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