Cannot connect via VPN to Win2000 server

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I have a WIN2000 server (NT4 environment) that I have set up as a Web server and a RAS server. When I try logging into the server for VPN connection from a Windows XP HE computer, I can't get past the "verifying username and password". It comes back with "Error 721: the remote computer did not respond". I can connect if I do it internally within the network via 192.168.X.X but when I try to connect via my static IP I get this error. I know that it works internally but what am I missing coming in through the static IP? I want to connect to my server from work but cannot as long as the static IP will not work. I appreciate any help anyone can give me.
 
Is the XP client behind a firewall? Is there a firewall anywhere between the
client and VPN server? You need to make sure that all firewalls and routers
between them are allowing IP Protocol 47 (GRE).

--

Thanks,
Marc Reynolds
Microsoft Technical Support

This posting is provided "AS IS" with no warranties, and confers no rights.


JNC said:
I have a WIN2000 server (NT4 environment) that I have set up as a Web
Click to expand...
server and a RAS server. When I try logging into the server for VPN
connection from a Windows XP HE computer, I can't get past the "verifying
username and password". It comes back with "Error 721: the remote computer
did not respond". I can connect if I do it internally within the network via
192.168.X.X but when I try to connect via my static IP I get this error. I
know that it works internally but what am I missing coming in through the
static IP? I want to connect to my server from work but cannot as long as
the static IP will not work. I appreciate any help anyone can give me.
 
Thanks for the quick reply Marc
I have a DLink DI-740 and with the firmware version and build I have it says that it passes PPTP traffic. I also have a firewall on the client and it too has pass PPTP traffic enabled on all adapters. I even tried stopping the firewall on the client but it did not make any difference. I know that I can connect through the router because I can type in the private IP of the server and connect immediately. The client and server are behind the same router. Any other thoughts
Thanks
Neil
----- Marc Reynolds [MSFT] wrote: ----

Is the XP client behind a firewall? Is there a firewall anywhere between th
client and VPN server? You need to make sure that all firewalls and router
between them are allowing IP Protocol 47 (GRE)

--

Thanks
Marc Reynold
Microsoft Technical Suppor

This posting is provided "AS IS" with no warranties, and confers no rights


JNC said:
I have a WIN2000 server (NT4 environment) that I have set up as a We
Click to expand...
server and a RAS server. When I try logging into the server for VP
connection from a Windows XP HE computer, I can't get past the "verifyin
username and password". It comes back with "Error 721: the remote compute
did not respond". I can connect if I do it internally within the network vi
192.168.X.X but when I try to connect via my static IP I get this error.
know that it works internally but what am I missing coming in through th
static IP? I want to connect to my server from work but cannot as long a
the static IP will not work. I appreciate any help anyone can give me
 
Check to make sure ports 500 & 1723 forward to your RAS server. Also, some
Cisco routers (675) will cause this problem if they have packet filtering
enabled. You may also check with your ISP to make sure they allow PROTOCOL
(not port) 47. Most of the time this will not be the issue, but might be
worth checking if everything else fails.

Good luck!


JNC said:
I have a WIN2000 server (NT4 environment) that I have set up as a Web
Click to expand...
server and a RAS server. When I try logging into the server for VPN
connection from a Windows XP HE computer, I can't get past the "verifying
username and password". It comes back with "Error 721: the remote computer
did not respond". I can connect if I do it internally within the network via
192.168.X.X but when I try to connect via my static IP I get this error. I
know that it works internally but what am I missing coming in through the
static IP? I want to connect to my server from work but cannot as long as
the static IP will not work. I appreciate any help anyone can give me.
 
John
I opened port 500 to the server and I called my ISP and they do not filter out protocol 47 (GRE). Still, I am not getting past the verifying username and password. I am really stumped here. I disabled the firewall on the client and still no luck. Any other suggestions? I would welcome any and all suggestions to get past this !

Thanks
Neil
 
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