Windows

Go into the dial up connection properties, Networking tab, TCP/IP, Advanced, DNS tab.

Add your internal DNS server to this list, make it the first one, then add the ISP's DNS server.

You have a couple of choices. First thing you need to do is make sure that your routing table is setup properly. You could even use the LMHOSTS file if necessary or a WINS server. If you have an internal DNS server you do want to make sure that is setup on your dialup connection. If you connect through the dialup at alternate locations you will need to make sure the ISP's DNS information is also listed. You can also use the route add command to make sure that your PC knows about the other subnets on your WAN, if you do not have an internal DNS server. (make sure you make the route add persistent -P so that they are added automatically on reboot).

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