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TCP/UDP "trivial" ports?
From: "Castle, Shane" <scastle () bouldercounty org>
Date: Tue, 23 Apr 2013 18:35:27 +0000

I see that using the chargen port for DDoS is happening: 
https://isc.sans.edu/diary/A+Chargen-based+DDoS+Chargen+is+still+a+thing+/15647 

Now, I block all these both ways at my firewall (actually, on the outside, I think they are in a router ACL), but 
looking through the complete set of rules I don't see anything but one ("DOS UDP echo+chargen bomb",sid 271) that seems 
to address this port range of the TCP and UDP "trivial" (AKA "simple") ports. Has there ever been one? Should we have 
one?

-- 
Shane Castle
Data Security Mgr, Boulder County IT



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