I deleted all the messages about this, thus the new subject. I think the problem was with the router/firewall address. When using Tzo DDNS You can pass a null IP Address for the Network Adaptor on the internal machine, thus posting the Gateway address. You can also choose to pass the Network adaptors address regardless of a Gateway, which is what you would not want in your case. Thus the DNS servers would be updated with router IP address which I believe was what you were looking for? Then you can track by name, right? Andy
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