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

["Kevin Riggins" <kevin.riggins () comdev com>]

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