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(ASCEND) NT Workstation ICMP traffic bringing line up



Has anyone noticed the following?:

I'm using NT Workstation 4 with NetBEUI and WINS disabled.  Each
time a user logs in, the machine arps for each DNS server, and then
sends an ICMP echo request.  Of course, this brings up the line.  No
DNS lookups are done.

First of all, any idea why this should be happening?  Secondly, will
filtering ICMP requests to the DNS servers harm other functionality?
 Third, does anyone have a filter (it does have to be generic,
correct) to block these echo requests?

Thanks,
-Anand
--
Anand R. Mehta
anand@mehtas.com

finger amehta@cluster.mcs.net for PGP key
Key fingerprint =  4A A0 A5 63 3B 2C 5B 81 82 5F F6 4E 27 8C 39 C2
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