Cannot Ping XP from a 2k3 Server(sp1)

A Tiny Office Network.
This 2k3 box is working as a proxy server. using CCproxy as proxy server on
this box.
I have 3 NICs on this Box as i dont have any router. I use NIC1 for the ISP
and NIC2 for my

home network. i use NIC3 for another PC. I have only One PC connected to
that NIC2.

Problem is: I have Installed SP1 on this 2k3 and now Enabled Firewall for
NIC1 but NIC2 is

free from any Firewall. Workstation can Ping my Server but i cant Ping WS
from the server.

Why is that? I can browse All the shared folder on WS. All the services can
be accessed from

that WS. ONLY PROB IS PING !!!! Do I need to install SP2 on XP box to ping
it from the

Server where SP1 is installed?

could be the rouiting issue. postiing the result of the routing table here may help.
For more and other information, go to http://howtonetworking.com.

Don't send e-mail or reply to me except you need consulting services. Posting on MS newsgroup will benefit all readers and you may get more help.

Bob Lin, MS-MVP, MCSE & CNE
How to Setup Windows, Network, Remote Access on http://www.HowToNetworking.com
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
This posting is provided "AS IS" with no warranties.

"Makana" <(E-Mail Removed)> wrote in message news:FD13DD86-4E13-4D70-A323-(E-Mail Removed)...
A Tiny Office Network.
This 2k3 box is working as a proxy server. using CCproxy as proxy server on
this box.
I have 3 NICs on this Box as i dont have any router. I use NIC1 for the ISP
and NIC2 for my

home network. i use NIC3 for another PC. I have only One PC connected to
that NIC2.

Problem is: I have Installed SP1 on this 2k3 and now Enabled Firewall for
NIC1 but NIC2 is

free from any Firewall. Workstation can Ping my Server but i cant Ping WS
from the server.

Why is that? I can browse All the shared folder on WS. All the services can
be accessed from

that WS. ONLY PROB IS PING !!!! Do I need to install SP2 on XP box to ping
it from the

Server where SP1 is installed?