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Cannot establish VPN with error 721 and 800
Situation: 1. The client setup VPN behind
a
Cisco 678 DMT.
Whenever he tries to establish the VPN, he receives Error 721 or 800. 3. PPTPclnt and PPTPsrv to test GRE and PPTP shows the IP Protocol 47 or GRE is not open. 4. Adding NAT on the Cisco 678 for GRE (set nat entry add 192.168.0.3 GRE) fixes the problem. Refer to case #: JB071806 Related Topics
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