Internet Connectivity

Jack Vizelter jack at
Fri Oct 1 15:26:50 UTC 2004

Investigation is still ongoing, but from what they can tell, majority of
the attempted connections have been going over TCP port 22.


-----Original Message-----
From: Josh Duffek [mailto:consultantjd16 at] 
Sent: Friday, October 01, 2004 11:05 AM
To: Jack Vizelter; nanog at
Subject: RE: Internet Connectivity

Did you run a sniffer to get an idea of what all the traffic is?
Curious what, if any, port(s) are being flooded.


-----Original Message-----
From: owner-nanog at [mailto:owner-nanog at] On Behalf Of
Jack Vizelter
Sent: Friday, October 01, 2004 9:56 AM
To: nanog at
Subject: Internet Connectivity

We had several machines start spewing huge amounts of data causing our
pipe to the public Internet to stop.  We had no traffic coming in or out
of the campus.  We're unsure of whether it's virus related, but wanted
to inquire if anyone else has heard of or came across something similar.
It appears to be an DDOS attack, but, originating from the inside.  This
started last night at about 10pm EST.


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