[Snort-users] thank you-> Does Signature exist alert on DNS queries to a nameserver.
Jacob, Raymond A Jr
raymond.jacob at ...7622...
Tue Mar 7 13:15:07 EST 2006
From: Zultan <zultan at ...13388...>
To: "Jacob, Raymond A Jr" <raymond.jacob at ...7622...>,
snort-users at lists.sourceforge.net
Date: Mon, 06 Mar 2006 20:59:14 +0000
Subject: Re: [Snort-users] Does Signature exist alert on DNS queries to a
Here's the basic syntax. Note the hex number between the pipes. It is the =
count of the number of following ASCII bytes. For example, freebeertoday.c=
om would be |0d|freebeertoday|03|com
alert udp $HOME_NET any -> $DNS_SERVERS 53 (msg:"amazon.com DNS query"; con=
Sensor placement is critical for this to work. The senosr must be able to =
see the desktop ask its nameserver(s).
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