VPN Error 721

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Hi all,

I have a windows 2K setup as RAS server behind the firewall. I've configured
the firewall to forward both prot 1723 and 47 to the RAS server. While using
an external client to establish a VPN connection to the RAS server. The
screen stops at "Verifying username and password..." for a while and display
"Error 721: The remote computer did not respond..". Can some one help? Thanks
in advanced.
 
Port 47 has nothing to do with VPN. For PPTP you do need IP protocol 47,
which is GRE. The encrypted VPN data is transferred inside a packet with a
GRE header, so no VPN data will be transferred if your router (or any other
firewall) blocks GRE (Generic Routing Encapsulation).
 
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