johnxsun@gmail.com wrote:
> Hello,
>
> I have two PCs with XP SP2 installed. Both of them has wireless
> connection to the same router that connects to a cable modem. The
> router has IP address 192.168.1.1 and the PCs get IP address from the
> router with DHCP, 192.168.1.101 and 192.168.1.111 respectively. Now,
> one PC (192.168.1.101) can reach (ping) the other one, but the other
> way is not working (192.168.1.111 cannot ping 192.168.1.101). I have
> checked the two machines, the setup are identical. I have no idea why
> the ping test only works one way. BTW, they both has no problem with
> accessing network. Thanks for any help.
>
> John

This is generally due to a firewall blocking the traffic...either disable it
or set an exception for ICMP or the other stuff you want.