Security Incidents: Re: Bogus DNS traffic

[Brian Collins <listbc () newnanutilities org>]

>   I'm seeing random UDP packets to port 53 of random
> internal IP addresses.  The source IP addresses are
> external, all over the map, although the one example
> I've gotten a good capture of bore the source MAC
> address of an internal server.  (Whatever is spoofing
> the IP address *could* be spoofing the MAC address, but
> that would still indicate an origin inside our network....)
>
>   Does anyone recognize this?
Check here...
http://isc.sans.org/diary.html

What you're seeing might be the same.
--Brian Collins


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