[Snort-users] RE: [Snort-sigs] portscan2-ignoreports...anyone get it to work???

From: Kevin Riggins <kevin.riggins(at)comdev.com>
Date: Fri Mar 21 2003 - 08:54:41 EST

The ignore hosts statement needs to be after the portscan2 statement like so:  

preprocessor portscan2: scanners_max 3200, targets_max 5000, target_limit 5, port_limit 20, timeout 60 preprocessor portscan2-ignorehosts: $HOME_NET preprocessor portscan2-ignoreports: s53 s80 s443 d53 d80 d443

Kevin           

	-----Original Message-----
	From: Jeff Oliveto [mailto:joliveto@CleanCommunications.com] 
	Sent: Thursday, March 20, 2003 3:16 PM
	To: snort-devel@lists.sourceforge.net;
snort-sigs@lists.sourceforge.net; snort-users@lists.sourceforge.net
	Subject: [Snort-sigs] portscan2-ignoreports...anyone get it to

work???                  

        Has anyone confirmed that the "preprocessor portscan2-ignoreports: s1 s2 d1 d2" variable works?          

        I'm running snort v 1.9.1, and varified that the feature is in the spp_portscan2.c source.          

        No matter how I specify the variable in the snort.conf file I can't get portscan2 to filter on the source or destination ports. Tried several different variations and none seem to have an affect (see examples below). BTW...the portscan2-ignorehosts variable does work in filtering on the source address.          

        If it does work...what is the trick?          

• examples ===============

        Preferred configuration:          

	preprocessor portscan2-ignorehosts: $HOME_NET
	preprocessor portscan2-ignoreports: s53 s80 s443 d53 d80 d443
	preprocessor portscan2: scanners_max 3200, targets_max 5000,

target_limit 5, port_limit 20, timeout 60          

        Alternate variations used during troubleshooting....          

        Removed ignorehosts and filter just on source/destination port...doesn't work:                   

	#preprocessor portscan2-ignorehosts: $HOME_NET
	preprocessor portscan2-ignoreports: s53 s80 s443 d53 d80 d443
	preprocessor portscan2: scanners_max 3200, targets_max 5000,

target_limit 5, port_limit 20, timeout 60          

        Reduce to one source port...doesn't work:          

	preprocessor portscan2-ignorehosts: $HOME_NET
	preprocessor portscan2-ignoreports: s80
	preprocessor portscan2: scanners_max 3200, targets_max 5000,

target_limit 5, port_limit 20, timeout 60          

        Change position...doesn't work:          

	preprocessor portscan2-ignorehosts: $HOME_NET
	preprocessor portscan2: scanners_max 3200, targets_max 5000,
target_limit 5, port_limit 20, timeout 60
	preprocessor portscan2-ignoreports: s53 s80 s443 d53 d80 d443
	
	Jeff Oliveto




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http://www.geocrawler.com/redir-sf.php3?list=snort-users Received on Fri Mar 21 11:00:30 2003