Impossible to ping other computers on the LAN of WinXP

It is a network of base with 3 PCs hard wired via a wireless Belkin, 2 PC wireless router, a second access point, network printer and an AS400. All computers are running Windows XP Pro SP3.  All computers can connect to the internet and can ping the router, the printer, the access point and the AS400, but cannot the other ping by name or IP address.

All firewalls have enabled ICMP echo response, but with or without the active firewall the result is the same. I tried several things including reset winsock and TCP stack with no joy. Someone at - it another suggestion?

The first thing to so that the resolution of these problems of network is to disable completely all firewalls, routers nature serve as firewalls and the machines will be always protected from external intrusions when firewalls are disabled.

John

Tags: Windows

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