Quick way to see if a Computer is on the LAN without a Ping - microsoft.public.dotnet.framework

Message from discussion Quick way to see if a Computer is on the LAN without a Ping

Thread-Topic: Quick way to see if a Computer is on the LAN without a Ping
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From: =?Utf-8?B?UGhpbGlwIEs=?= <Phil...@discussions.microsoft.com>
Subject: Quick way to see if a Computer is on the LAN without a Ping
Date: Thu, 18 May 2006 16:48:01 -0700
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I need a quick responsive (say 100ms) way to check if a computer is on the 
LAN from a .NET program that is run by a low level user.

Is there a way? 

Apparently Ping (ICmp over raw socket) can only be done by an admin user - 
so I am told.
I am am running with these permissions:
[assembly: PermissionSetAttribute(SecurityAction.RequestMinimum, Name = 
"LocalIntranet")]
[assembly: SocketPermissionAttribute(SecurityAction.RequestMinimum, 
Unrestricted=true)]