Re: Remove Home_NET from EXTERNAL_NET any

[Erek Adams <erek () theadamsfamily net>]

On Wed, 3 Jul 2002 DThomaz () flowserve com wrote:

> How about removing  and address from the rule.
>
> alert icmp $EXTERNAL_NET!172.20.11.3 any -> $HOME_NET any (msg:"MISC Large
> ICMP Packet"; dsize: >800; reference:arachnids,246; classtype:bad-unknown;
> sid:499; rev:1;)
>
> I do not want to see alerts from 172.20.11.3, should I edit at the rule or
> at the snort.conf?
> When I remove from the rule I get this error running snort
>
> Jul  3 11:16:40 ormnm9 snort: FATAL ERROR: ERROR /etc/snort//misc.rules (7)
> => Rule netmask (16!172.20.11.3/30) didn't x-late, WTF?

Nope.  Wrong syntax.  Have a look at:

        http://www.snort.org/docs/writing_rules/chap2.html#tth_sEc2.2.3


> From what I'm reading, your question has changed a bit.  Now you're wanting to
'ignore' a host and/or type of traffic from that host, but no others.  If
that's correct, then have a look at this:

        http://www.theadamsfamily.net/~erek/snort/ignore.txt

If I'm on wrong...  *shrug*  Guess that would be a penalty drink[0] for me. :)

-----
Erek Adams
Nifty-Type-Guy
TheAdamsFamily.Net


[0]     http://www.theadamsfamily.net/~erek/snort/drinking_game.txt



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