Rule opinions

[James Nonya <slave_tothe_box () yahoo com>]

So ok...I have udp port 135 block anyways, but I
wanted to see if this would fly...so far this hasn't
seemed to work:

alert udp $EXTERNAL_NET any -> $HOME_NET 135
(msg:"Popup Spam Attempt"; content:"|F8 91 7B 5A 00 FF
D0 11 A9 B2 00 C0 4F B6 E6 FC|";)

The content is from:
http://www.mynetwatchman.com/kb/security/articles/popupspam/netsend.htm

Any ideas why this won't fly?  The firewall using
iptables and snort are on the same box.  Thanks!

James

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