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| Subject: | RE: Removing ping/icmp from a network |
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| Date: | Wed, 26 Mar 2008 12:29:02 -0700 |
From: Jason Thompson Subject: Re: Removing ping/icmp from a network
[snip]
I don't see any ICMP messages that are a MUST for network operation.
The one system that I know makes use of ICMP messages is Active Directory. It uses ICMP to establish a number of parameters regarding speed of the links between Clients and Domain controllers. See the note at the following KB article for some details: http://support.microsoft.com/kb/227260/ With this in mind, you could setup rules for ICMP traffic to only be allowed to Domain Controllers, which would be sufficient for normal operation of AD. Jok
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