I have two vpn connections, one works, one doesn't. The one that works goes through a nat'ed router and connects to a vpn server running on Windows 2000 server. The one that doesn't, attempts to connect to an vpn on isa server 2000 but I get the 678 there was no answer error. Both are pptp and neither is ipsec. My computer is connected via nat through a Vigor router which I suspect may be blocking something. If so what, and if not, why can one connect and the other not. I can connect via a modem which is obviously not nat'ed.
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pptp vpn doesn't work with isa server 2000
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