Snort mailing list archives

Win32 - multiple interfaces?


From: Rich Adamson <radamson () routers com>
Date: Thu, 1 Jan 2004 07:33:27 -0600


Just upgraded to Win32 v2.1.0 on Win2kPro from CodeCrafters site after being 
away from snort for a while. Configured and running fine as validated by a 
simple telnet detection rule, logging low-volume alerts to syslog, etc. Two
questions.

Question 1:
Can I run one instance of snort that will sniff packets on two nic interfaces
at the same time? If so, what's the proper config/syntax?

(I know I can run two instances to accomplish this, but would rather not
waste mem if it can be done with one instance on this low-volume net.)

Question 2:
I added the following to my local.rules with due care for single line entry:

I *guarantee* you it's a machine infected with Nachi or a new variant of Nachi.

# This rule is for tracking Nachi infections
alert icmp $HOME_NET any -> any any (msg: "ALERT!!! NACHI Infection!!";
content: "|aaaa aaaa aaaa aaaa aaaa aaaa aaaa aa
aa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa
aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa|";
dsize:64; itype: 8; icode: 0; threshold: type both, track by_src, count
1000, seconds 60; classtype:trojan-activity; si
d: 10000008; rev: 4;)

and the startup barfs with:
 ERROR: *** threshold: count
 *** Invalid integer input: 1000
 Fatal Error, Quitting..
Since I've been away for a couple of snort versions, what am I missing in
terms of thresholding?

Rich




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