[Snort-sigs] [Emerging-Sigs] TCP/UDP "trivial" ports?

Will Metcalf william.metcalf at ...2420...
Tue Apr 23 15:29:26 EDT 2013

UDP sig with threshold might be interesting... Will be expensive though.
What do yo guy's think?



On Tue, Apr 23, 2013 at 1:35 PM, Castle, Shane <scastle at ...3555...>wrote:

> 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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