Re: A Can Ping B, But B Cannot Ping A?


Oh well, not long after my prior post I found the cause and the solution
:smile:
May be it applies to you, may be not. In my case the issue was caused
by the Cisco VPN client, there is a configuration that was causing one
machine to block pings and other protocols. Do you have the Cisco VPN
client installed? If not, look for other networking applications that
might have a similar "side effect". Here is the full story on the
Cisco VPN client, found on 'Windows XP and Windows 2003 Network Problem
Solver' (http://winhlp.com/wxnet.htm) :

Mike Williams wrote on 2004-12-06:

More searching turned up some similar problems, with systems that have
Cisco VPN Client installed?which I have?and its "Deterministic Network
Enhancer"?which my system has. Your guide mentioned this, with no
further details. I don't know anything about network determinism, but
none of the threads [in another discussion forum] had clear solutions,
though, and I have now identified one.

There's an extra security feature in the Cisco application called
"Stateful Firewall (Always On)" mainly for the benefit of wireless
situations (it was turned on by default in the version I got from my
company's tech support). The way this feature is set up is somewhat
counter-intuitive, as it says "Always On" in its name, whether or not
the feature is turned on. The on/off indicator is actually a checkmark
next to the item.

Control of the feature can be accessed either through the client's
Options menu or by right-clicking on the yellow padlock icon in the
taskbar when the client's active. Simply clicking on the item toggles
it on/off; a checkmark appears. There's virtually nothing on this in
the Cisco literature. Disabling (unchecking) the feature cleared up the
problem.


Hope this helps you !


--
nice
.

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