Q: I've setup CProxy Server and I can access the Internet from the server and a other workstations but when I try and access from a particular client workstation, I get a connection failure notice or the browser permanently reports it could not locate the website.

A: Can you ping the CProxy Server from the client workstation? The most common cause of connection failures in these circumstances is where a computer is trying to access the proxy server from a different IP subnet from the server. For example: the CProxy Server has an IP address of 192.168.0.1 and the workstation that is trying to access the proxy server has an IP address of 10.0.0.12. The routing between the two computers becomes unclear and communication is lost. If this is the case, you will need to perform of the following:

Windows NT
Enable IP Forwarding. This is done from Control Panel > Network > Protocols > TCP/IP > Routing menu. Check the IP Forwarding checkbox. You will need to restart Windows NT for this to take effect. You then need to add an IP address from the IP subnet that the client workstation is running on to the Ethernet card on the NT machine so in effect, it carries two IP addresses.

Windows NT
You will need to install an additional Ethernet card in the CProxy Server machine and give it an IP address from the subnet that the client workstation is running on. You will then need to physically connect that ethernet card to the network on which the client machine is running.

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