Just popped out to my mind while looking at various IP options. What if you add 
some filtering on IP options, namely Selective Directed Broadcast Option?
E.g. Deny ip any any option sdb

I believe it's mostly for UDP protocol but those mentioned UDP attacks could be 
blocked.

Eugene

From: Kingsley Charles 
<[email protected]<mailto:[email protected]>>
Date: Tuesday, June 5, 2012 1:03 AM
To: 
"[email protected]<mailto:[email protected]>" 
<[email protected]<mailto:[email protected]>>
Subject: [OSL | CCIE_Security] Blocking flood attack on an interface

Hi all

How do we block smurf attacks on an interface other than using "no ip 
directed-broadcast"? I can't think of any other commands.


With regards
Kings
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