Snort mailing list archives
Re: Excluding $HOME_NET -> $HOME_NET Alerts
From: Ed Kasky <ed () esson net>
Date: Sun, 19 May 2002 19:41:29 -0700
At 10:20 AM Monday, 5/20/2002, Michael Boman wrote -=>
On Monday 20 May 2002 10:00, Ed Kasky wrote: > Is there a way to disable certain alerts from any home_net host to another > home_net host? I back up my web server over the wire to a tape machine and > get flooded with "Shellcode X86 Noop" alerts whenever I run it. I also get > a lot of "WEB-MISC long basic authorization string" alerts using acid to > view alerts in a mysql database. > > I was under the impression that "alert ip $EXTERNAL_NET any -> $HOME_NET" > took care of this. > > From my snort.conf: > var HOME_NET 10.0.0.0/24 And I bet you have: var EXTERNAL_NET any
Good guess...
that matches any address, including those in HOME_NET. why not set EXTERNAL_NET to !$HOME_NET (everything BUT HOME_NET). This would how ever limit the ability to catch insiders....
I see what you mean if I change it in snort.conf. Will this work in an individual rule: "alert ip $EXTERNAL_NET !$HOME_NET -> $HOME_NET"Or can I even make it more specific to exclude the one ip address that is causing the specific alert when backing up?
"alert ip $EXTERNAL_NET !10.0.0.3 -> $HOME_NET" Ed Kasky Los Angeles, CA . . . . . . . . ~ The only thing infinite is our capacity for self-deception. ~ _______________________________________________________________ Hundreds of nodes, one monster rendering program. Now that's a super model! Visit http://clustering.foundries.sf.net/ _______________________________________________ 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:
- Excluding $HOME_NET -> $HOME_NET Alerts Ed Kasky (May 19)
- Re: Excluding $HOME_NET -> $HOME_NET Alerts Michael Boman (May 19)
- Re: Excluding $HOME_NET -> $HOME_NET Alerts Ed Kasky (May 19)
- Re: Excluding $HOME_NET -> $HOME_NET Alerts Michael Boman (May 19)
- Re: Excluding $HOME_NET -> $HOME_NET Alerts Ed Kasky (May 20)
- Re: Excluding $HOME_NET -> $HOME_NET Alerts Michael Boman (May 20)
- Re: Excluding $HOME_NET -> $HOME_NET Alerts Ed Kasky (May 19)
- Re: Excluding $HOME_NET -> $HOME_NET Alerts Michael Boman (May 19)