Even when using the -o flag, I still get alerts on many things. For example,
pass udp 192.168.1.33 any -> any 161
still generates alerts for 'SNMP request udp'
and neither sfscan nor a rules like:
pass ip 192.168.1.5/32 any -> any 80
pass tcp 192.168.1.5/32 any -> any 80
stop the '(portscan) Open Port' alerts for regular web browsing.
Anyone have any suggestions?
-----Original Message-----
From: Jeff Dell [mailto:jdell@activeworx.com]
Sent: Friday, February 25, 2005 9:04 AM
To: 'Roy Kidder'; snort-users@lists.sourceforge.net
Subject: RE: [Snort-users] Rules Question
Check your rules order. By default it is alert -> pass -> log
-> etc...
Try adding the flag -o to your command line options when
starting snort.
Cheers,
Jeff
-----Original Message-----
From: snort-users-admin@lists.sourceforge.net
[mailto:snort-users-admin@lists.sourceforge.net] On Behalf Of
Roy Kidder
Sent: Friday, February 25, 2005 8:26 AM
To: snort-users@lists.sourceforge.net
Subject: [Snort-users] Rules Question
I'm trying to write what I expected to be a simple set rules,
but it's not
working for me. They look like this:
pass udp any any <> 10.0.0.10 53
pass udp any any <> 192.168.1.5 53
alert udp any any <> any 53 (msg: "DNS Query";)
What I expected was to alert on any DNS queries except those
to 10.0.0.10 or
to 192.168.1.5. Instead, I'm seeing alerts on everything
including those two
hosts.
Any pointers on what I did wrong?
Thanks in advance,
Roy
Roy Kidder
Network Engineer
Safelite Glass Corp.
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