Subject: RE: Beowolf cluster
From: Leif Sawyer (lsawyer@gci.com)
Date: Wed Mar 20 2002 - 12:19:27 AKST
Larry Collier writes:
> Ok, why should only stupid people block type 3 ICMP?
Iffn i remember correctly, ICMP (type 3) is Destination Unreachable.
If you block this ICMP packet, then a sending host will continue trying
to contact the destination, backing off further and futher.
The ICMP[3] message will let the sender know that the destination host
is unavailable. Of course, the sender's application needs to be aware
of these messages in order to terminate the connection attempt.
Leif
This archive was generated by hypermail 2a23 : Wed Mar 20 2002 - 12:19:34 AKST