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VPN & Nat through Router

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by jive8it

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I am needing some help setting up a VPN connection between two branchs of a business. Both have broadband connections and a small LAN with max 10 pcs on internal network. Both branchs have static IP public addresses, but I cant seem to connect. I have configured the router to forward VPN incoming TCP1723 to local static ip of VPN server XP pro and firewalls on the server to allow incoming VPN and remote desktop. Is there any other ports I need to open on the router.

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by nivek r.

For a PPTP VPN, you need port 1723 open. Also there are some protocols that utilize IP service numbers (different than ports because they function at the network level). IP service # 47 (called GRE) traffic must be allowed through the firewall as well.

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