Snort mailing list archives
Re: VAR and IP lists
From: Erek Adams <erek () theadamsfamily net>
Date: Sat, 30 Mar 2002 09:08:51 -0800 (PST)
On Sat, 30 Mar 2002, Subba Rao wrote:
I have declared a variable for a list of addresses that I wanted to ignore. (The list is much longer than what I have listed here) var SVCS 10.11.10.11 10.11.10.12 10.11.10.13 var SVCS2 10.11.10.30 10.11.10.40 10.11.10.50
Ignore in what way?
Snort starts up fine without complaining. It does however miss some of these IP addresses in the rules. What is the correct syntax for declaring variables with list of IP addresses? I used the example from Snort manual.
At this time, it depends on the processor that you are sending it to. Some use whitespace delimted, some use the [x.x.x.x/Y,z.z.z.z/Y] format.
What is the limit of IP addresses that can be assigned to a variable? I had to chop the IP addresses after 70 and create a new variable. (I was trying to assign 300 IP addresses to a variable and Snort did not like that.) I did not look for the IP address threshold for the variable but randomly picked 70 as the limit.
I'm going to guess that you are trying to ignore portscans from these servers. I would suggest using a BPF filter and a CIDR netmask instead of a long list of vars. IOW, 10.11.10.0/24, Cheers! ----- Erek Adams Nifty-Type-Guy TheAdamsFamily.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:
- VAR and IP lists Subba Rao (Mar 30)
- Re: VAR and IP lists Mike Macias (Mar 30)
- Re: VAR and IP lists Erek Adams (Mar 30)
- Re: VAR and IP lists Subba Rao (Mar 30)
- Re: VAR and IP lists Erek Adams (Mar 30)
- Re: VAR and IP lists Subba Rao (Mar 30)