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Watchguard XTM21 - PPTP Passthrough

Posted on 2011-10-19
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Last Modified: 2013-11-16
Hi all,

Watchguard XTM21 Firewall, we've confugured PPTP 1723 and GRE 47 to route through to our SBS server on 192.168.1.1 and when I try to vpn into it from an xp client, I get denied according to the watchguard logs.

I have forwarded smtp 25 to the server no problem. Is there a passthrough option I need to enable for PPTP?

I can vpn into the sbs server locally without a problem.
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Question by:unrealone1
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dpk_wal earned 2000 total points
ID: 36997667
Assuming that your PPTP server is fully functional and it is WG which is preventing traffic [as evident from your post that you see denies in WG logs].

Use the predefined PPTP policy and also configure 1-1 NAT instead of using static NAT.
For 1-1 NAT you MUST have additional public IP other than the external interface IP. Please note that if you only have one additional IP and are using the additional IP for static NAT [where you can forward multiple port/protocol combination to different internal hosts], then you would need to remove static NAT and only configure 1-1 NAT [where the connection from specific IP would only go to single internal host].

From the PPTP clients connect to this additional public IP for establishing the tunnels.

Please check and update.

Thank you.
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by:unrealone1
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