nanog mailing list archives

Re: management interface accessability (was Re: Worm / UDP1434)


From: "Stephen J. Wilcox" <steve () telecomplete co uk>
Date: Sun, 26 Jan 2003 18:50:36 +0000 (GMT)



On Sun, 26 Jan 2003, Chris Lloyd wrote:


On Sun, Jan 26, 2003 at 12:08:07PM -0600, Rob Thomas wrote:
Just a point here:  Many road warriors are work-at-home folks who have
their computers on 24x7.  They may be infected, and will fire up their
VPN tunnels Monday morning.  This may introduce the worm into the chewy
center of many corporate networks.  Hopefully folks have put the proper
filters in place on their VPN access points.

Personally, I think it's unlikely the situation will get worse on Monday
because of people starting work. The first reason is that you can only get
infected if you're running SQL server (or MSDE) at home and someone sends you
one of the special packets. The second reason is that you, if you're infected,
send the packets to random IP addresses, and not only do you have to randomly
choose an address on the corporate LAN, but it has to be a machine running
SQL server. To my mind the probability of all these things being the case
is microscopic!

My observation was that the target IPs are not random and that local IPs were
hit more often (same /16 more than /8 more than all /0) .. a la Codered.

STeve


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