Windows 2003 server enterprise edition: does not respond to ping on one interface

Hi all
I have a Windows server 2003 enterprise edition installed on a
regular PC, with two FE cards. I have also installed ISA 2000 with
SP2 on it.

Pre-conditions:
===============
No ISA firewalls are enabled.
No ICF is enabled on any of these FE interfaces.
No RRAS is enabled.

Network (all crossover connections):
====================================
PC1----W2003----PC2

Issue:
======
PC1 can ping W2003, W2003 can ping PC1 (External)
W2003 can ping PC2, PC2 CANNOT ping W2003 (Internal)

Troubleshooting:
================
Verified MAC addresses. ARP resolution is fine on both sides.
Used Ethereal in W2003 and packets are coming in from PC2.
IP drop statistics (netstat -s) reports increasing "Received
packets discarded".

Next Step:
==========
Pretty sure I am not enabling some configuration to allow ping
responses.
Not sure which one.

Thanks in advance
Sri

Hi,

How to Enable Internet Control Message Protocol Proxy PING Requests
http://support.microsoft.com/kb/q274568/

I hope this helps,

Mike

"Srihari Raghavan" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) om...
> Hi all
> I have a Windows server 2003 enterprise edition installed on a
> regular PC, with two FE cards. I have also installed ISA 2000 with
> SP2 on it.
>
> Pre-conditions:
> ===============
> No ISA firewalls are enabled.
> No ICF is enabled on any of these FE interfaces.
> No RRAS is enabled.
>
> Network (all crossover connections):
> ====================================
> PC1----W2003----PC2
>
> Issue:
> ======
> PC1 can ping W2003, W2003 can ping PC1 (External)
> W2003 can ping PC2, PC2 CANNOT ping W2003 (Internal)
>
> Troubleshooting:
> ================
> Verified MAC addresses. ARP resolution is fine on both sides.
> Used Ethereal in W2003 and packets are coming in from PC2.
> IP drop statistics (netstat -s) reports increasing "Received
> packets discarded".
>
> Next Step:
> ==========
> Pretty sure I am not enabling some configuration to allow ping
> responses.
> Not sure which one.
>
> Thanks in advance
> Sri