Re: Bizarre traffic

With it cooresponding to network disruptions, similar IPs on your net
and conversations looking normal otherwise, have you considered it a
router/switch corrupting packets?  Or even the a bad NIC in a machine?

-B

On 2/9/06, David Gillett <gillettdavid@fhda.edu> wrote:
>   Does anybody know of anything (malware, hackware, other?) that
> would cause a machine to put out traffic with the first octet of
> the destination address (re)set to ZERO?
>
>   The traffic I saw all was headed for port 443, and wasn't
> decipherable.  The variation in packet size looked like a real
> conversation, although return packets (if any) weren't passing
> my sniffer.  The destination addresses, sans the bogus first octet,
> looked like addresses of a couple of real internal servers (source
> address was internal) -- which, however, do not have HTTPS service
> active.
>
>   [This traffic correlated with various intermittent disruptions of
> our network, which stopped when the source machine dropped off the
> network.  It later reappeared -- and so did a brief disruption --
> long enough for me to pinpoint and ban it.]
>
> David Gillett