Michael Grobe grobe at raven.cc.ku.edu
Wed Jan 23 18:55:27 CST 2002


to follow up on jeff's note....our network guys have now characterized 
the high-traffic event experienced on jan 23, 2002 as:

     "...a large burst of traffic seemed to occur every half hour 
     from the times we were monitoring from 2:00 - 5:00 (CST)."

and they have linked the event to a number of remote AG systems which 
were probably in the Lobby....and, possibly, to some non AG systems.
investigation continues. 

:michael grobe
university of kansas
> Did anyone else happen to notice what would like a huge DoS atack
> between about 4:30 and 5:00 PM U.S. CST today (Jan. 23)?  Our campus was
> suffering from huge problems with internet connectivity and one of our
> network folks saw something in a router that made him think it might
> have something to do with AG as the address was one of the multicast
> addresses for the Lobby.  When we shut down our AG node(s) the problem
> suddenly disappeared.  Now we'd like to try and find out if it was pure
> coincidence or if was somehow AG related.  Our network guy said the
> traffic looked like huge (30KB?) UDP packets.  So did anyone else notice
> problems during this timeframe?
> Jeff Long
> University of Kansas

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