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Can't connect to VPN remotely

Windows Server Help


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  #1  
Old 18-09-2006
Homer Jay
 
Posts: n/a
Can't connect to VPN remotely

Hi,

I am unable to connect to a VPN on my server remotely, every time I try and
connect I get an error: "Error 800: Unable to establish the VPN Connection.
The VPN server may be unreachable, or security parameters may not be
configured properly for this connection."

If I am connected to the same network as the server, the connection works
fine. Only when trying to connect remotely do I get problems. Sorry I can't
give any more information, to be honest, I don't know exactly what
information would be useful in trying to get the problem sorted.

Thanks.



Reply With Quote
  #2  
Old 18-09-2006
Robert L [MVP - Networking]
 
Posts: n/a
Re: Can't connect to VPN remotely

Assuming you have a router/firewall. I would check it first. These search results may help,

case Studies - VPN error 721 and 800 Case 1: When a user attempts to access the Windows VPN server that is behind a Linksys WRT54G, he receives VPN Error 800 or 721. ...
www.chicagotech.net/VPN/vpncase800.htm - Similar pages


error 721 and error 800 Q: Error 721 and error 800. I have SBS 2003 Standard Edition. ... I double checked the check list in server management and enabled VPN to the appropriate ...
www.chicagotech.net/Q&A/vpn25.htm


cannot establish VPN with error 721 and 800 The client setup VPN behind a Cisco 678 DMT. Whenever he tries to establish the VPN, he receives Error 721 or 800. Troubleshooting: 1. ...
www.chicagotech.net/cisco/vpngre1.htm



Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Homer Jay" <someone@microsoft.com> wrote in message news:eCGNbOy2GHA.3476@TK2MSFTNGP04.phx.gbl...
Hi,

I am unable to connect to a VPN on my server remotely, every time I try and
connect I get an error: "Error 800: Unable to establish the VPN Connection.
The VPN server may be unreachable, or security parameters may not be
configured properly for this connection."

If I am connected to the same network as the server, the connection works
fine. Only when trying to connect remotely do I get problems. Sorry I can't
give any more information, to be honest, I don't know exactly what
information would be useful in trying to get the problem sorted.

Thanks.


Reply With Quote
  #3  
Old 18-09-2006
Homer Jay
 
Posts: n/a
Re: Can't connect to VPN remotely

Thanks for the links, I checked them out and tried some of the things they suggested. I am using a Netgear FVL328 with the latest firmware. Port 1723 is opened, and the option to allow VPN passthrough has been checked.

The only thing I have not yet checked is if IP Protocol 47 is open, but am unable to find anywhere in the router control panel to open it (if it is not yet already open).

My server only has 1 NIC and I am trying to set up the VPN with PPTP.
"Robert L [MVP - Networking]" <noreply@hotmail.com> wrote in message news:%234AIRHz2GHA.4312@TK2MSFTNGP02.phx.gbl...
Assuming you have a router/firewall. I would check it first. These search results may help,

case Studies - VPN error 721 and 800 Case 1: When a user attempts to access the Windows VPN server that is behind a Linksys WRT54G, he receives VPN Error 800 or 721. ...
www.chicagotech.net/VPN/vpncase800.htm - Similar pages


error 721 and error 800 Q: Error 721 and error 800. I have SBS 2003 Standard Edition. ... I double checked the check list in server management and enabled VPN to the appropriate ...
www.chicagotech.net/Q&A/vpn25.htm


cannot establish VPN with error 721 and 800 The client setup VPN behind a Cisco 678 DMT. Whenever he tries to establish the VPN, he receives Error 721 or 800. Troubleshooting: 1. ...
www.chicagotech.net/cisco/vpngre1.htm



Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Homer Jay" <someone@microsoft.com> wrote in message news:eCGNbOy2GHA.3476@TK2MSFTNGP04.phx.gbl...
Hi,

I am unable to connect to a VPN on my server remotely, every time I try and
connect I get an error: "Error 800: Unable to establish the VPN Connection.
The VPN server may be unreachable, or security parameters may not be
configured properly for this connection."

If I am connected to the same network as the server, the connection works
fine. Only when trying to connect remotely do I get problems. Sorry I can't
give any more information, to be honest, I don't know exactly what
information would be useful in trying to get the problem sorted.

Thanks.


Reply With Quote
  #4  
Old 18-09-2006
Homer Jay
 
Posts: n/a
Re: Can't connect to VPN remotely

Ok I just ran the PPTPCLNT tool to check if GRE was open, and I am not sure if it is open........ this is what is displayed when I run the tool:

Initializing Winsock . . .
Obtaining host information . . .
Successfully resolved server's host information
==================================
Enter data to send to sever (between 1 and 255 chrs.), then hit enter:
-->1

Error 10061 calling connect ():
WSAECONNREFUSED: Connection refused

Creating a socket to test GRE protocol traffic. . .

Total GRE packets sent = 1
Total GRE packets sent = 2
Total GRE packets sent = 3
Total GRE packets sent = 4
Total GRE packets sent = 5

====================================
Check server to see if the GRE packets were received successfully
====================================

Closing down socket

Goodbye!

I am guessing this is telling me that GRE is blocked on my router, no idea where to enable it though.
"Homer Jay" <someone@microsoft.com> wrote in message news:OhSGVb02GHA.696@TK2MSFTNGP03.phx.gbl...
Thanks for the links, I checked them out and tried some of the things they suggested. I am using a Netgear FVL328 with the latest firmware. Port 1723 is opened, and the option to allow VPN passthrough has been checked.

The only thing I have not yet checked is if IP Protocol 47 is open, but am unable to find anywhere in the router control panel to open it (if it is not yet already open).

My server only has 1 NIC and I am trying to set up the VPN with PPTP.
"Robert L [MVP - Networking]" <noreply@hotmail.com> wrote in message news:%234AIRHz2GHA.4312@TK2MSFTNGP02.phx.gbl...
Assuming you have a router/firewall. I would check it first. These search results may help,

case Studies - VPN error 721 and 800 Case 1: When a user attempts to access the Windows VPN server that is behind a Linksys WRT54G, he receives VPN Error 800 or 721. ...
www.chicagotech.net/VPN/vpncase800.htm - Similar pages


error 721 and error 800 Q: Error 721 and error 800. I have SBS 2003 Standard Edition. ... I double checked the check list in server management and enabled VPN to the appropriate ...
www.chicagotech.net/Q&A/vpn25.htm


cannot establish VPN with error 721 and 800 The client setup VPN behind a Cisco 678 DMT. Whenever he tries to establish the VPN, he receives Error 721 or 800. Troubleshooting: 1. ...
www.chicagotech.net/cisco/vpngre1.htm



Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Homer Jay" <someone@microsoft.com> wrote in message news:eCGNbOy2GHA.3476@TK2MSFTNGP04.phx.gbl...
Hi,

I am unable to connect to a VPN on my server remotely, every time I try and
connect I get an error: "Error 800: Unable to establish the VPN Connection.
The VPN server may be unreachable, or security parameters may not be
configured properly for this connection."

If I am connected to the same network as the server, the connection works
fine. Only when trying to connect remotely do I get problems. Sorry I can't
give any more information, to be honest, I don't know exactly what
information would be useful in trying to get the problem sorted.

Thanks.


Reply With Quote
  #5  
Old 19-09-2006
Robert L [MVP - Networking]
 
Posts: n/a
Re: Can't connect to VPN remotely

If the VPN pass through is enabled that is good enough for GRE. However I still believe it is Netgear FVL328 issue. Any errors in the Server event Viewer? Any errors in the Netgear FVL328 logs?

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Homer Jay" <someone@microsoft.com> wrote in message news:eNB%23nh02GHA.2196@TK2MSFTNGP06.phx.gbl...
Ok I just ran the PPTPCLNT tool to check if GRE was open, and I am not sure if it is open........ this is what is displayed when I run the tool:

Initializing Winsock . . .
Obtaining host information . . .
Successfully resolved server's host information
==================================
Enter data to send to sever (between 1 and 255 chrs.), then hit enter:
-->1

Error 10061 calling connect ():
WSAECONNREFUSED: Connection refused

Creating a socket to test GRE protocol traffic. . .

Total GRE packets sent = 1
Total GRE packets sent = 2
Total GRE packets sent = 3
Total GRE packets sent = 4
Total GRE packets sent = 5

====================================
Check server to see if the GRE packets were received successfully
====================================

Closing down socket

Goodbye!

I am guessing this is telling me that GRE is blocked on my router, no idea where to enable it though.
"Homer Jay" <someone@microsoft.com> wrote in message news:OhSGVb02GHA.696@TK2MSFTNGP03.phx.gbl...
Thanks for the links, I checked them out and tried some of the things they suggested. I am using a Netgear FVL328 with the latest firmware. Port 1723 is opened, and the option to allow VPN passthrough has been checked.

The only thing I have not yet checked is if IP Protocol 47 is open, but am unable to find anywhere in the router control panel to open it (if it is not yet already open).

My server only has 1 NIC and I am trying to set up the VPN with PPTP.
"Robert L [MVP - Networking]" <noreply@hotmail.com> wrote in message news:%234AIRHz2GHA.4312@TK2MSFTNGP02.phx.gbl...
Assuming you have a router/firewall. I would check it first. These search results may help,

case Studies - VPN error 721 and 800 Case 1: When a user attempts to access the Windows VPN server that is behind a Linksys WRT54G, he receives VPN Error 800 or 721. ...
www.chicagotech.net/VPN/vpncase800.htm - Similar pages


error 721 and error 800 Q: Error 721 and error 800. I have SBS 2003 Standard Edition. ... I double checked the check list in server management and enabled VPN to the appropriate ...
www.chicagotech.net/Q&A/vpn25.htm


cannot establish VPN with error 721 and 800 The client setup VPN behind a Cisco 678 DMT. Whenever he tries to establish the VPN, he receives Error 721 or 800. Troubleshooting: 1. ...
www.chicagotech.net/cisco/vpngre1.htm



Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Homer Jay" <someone@microsoft.com> wrote in message news:eCGNbOy2GHA.3476@TK2MSFTNGP04.phx.gbl...
Hi,

I am unable to connect to a VPN on my server remotely, every time I try and
connect I get an error: "Error 800: Unable to establish the VPN Connection.
The VPN server may be unreachable, or security parameters may not be
configured properly for this connection."

If I am connected to the same network as the server, the connection works
fine. Only when trying to connect remotely do I get problems. Sorry I can't
give any more information, to be honest, I don't know exactly what
information would be useful in trying to get the problem sorted.

Thanks.


Reply With Quote
  #6  
Old 19-09-2006
Homer Jay
 
Posts: n/a
Re: Can't connect to VPN remotely

No errors that I can see on either the Servers event viewer, or on the Netgear. I did notice that when I used the PPTPSVR tool that I got the error WSAEADDRINUSE but so far have not looked too much into the error.


"Robert L [MVP - Networking]" <noreply@hotmail.com> wrote in message news:elignc12GHA.5032@TK2MSFTNGP04.phx.gbl...
If the VPN pass through is enabled that is good enough for GRE. However I still believe it is Netgear FVL328 issue. Any errors in the Server event Viewer? Any errors in the Netgear FVL328 logs?

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Homer Jay" <someone@microsoft.com> wrote in message news:eNB%23nh02GHA.2196@TK2MSFTNGP06.phx.gbl...
Ok I just ran the PPTPCLNT tool to check if GRE was open, and I am not sure if it is open........ this is what is displayed when I run the tool:

Initializing Winsock . . .
Obtaining host information . . .
Successfully resolved server's host information
==================================
Enter data to send to sever (between 1 and 255 chrs.), then hit enter:
-->1

Error 10061 calling connect ():
WSAECONNREFUSED: Connection refused

Creating a socket to test GRE protocol traffic. . .

Total GRE packets sent = 1
Total GRE packets sent = 2
Total GRE packets sent = 3
Total GRE packets sent = 4
Total GRE packets sent = 5

====================================
Check server to see if the GRE packets were received successfully
====================================

Closing down socket

Goodbye!

I am guessing this is telling me that GRE is blocked on my router, no idea where to enable it though.
"Homer Jay" <someone@microsoft.com> wrote in message news:OhSGVb02GHA.696@TK2MSFTNGP03.phx.gbl...
Thanks for the links, I checked them out and tried some of the things they suggested. I am using a Netgear FVL328 with the latest firmware. Port 1723 is opened, and the option to allow VPN passthrough has been checked.

The only thing I have not yet checked is if IP Protocol 47 is open, but am unable to find anywhere in the router control panel to open it (if it is not yet already open).

My server only has 1 NIC and I am trying to set up the VPN with PPTP.
"Robert L [MVP - Networking]" <noreply@hotmail.com> wrote in message news:%234AIRHz2GHA.4312@TK2MSFTNGP02.phx.gbl...
Assuming you have a router/firewall. I would check it first. These search results may help,

case Studies - VPN error 721 and 800 Case 1: When a user attempts to access the Windows VPN server that is behind a Linksys WRT54G, he receives VPN Error 800 or 721. ...
www.chicagotech.net/VPN/vpncase800.htm - Similar pages


error 721 and error 800 Q: Error 721 and error 800. I have SBS 2003 Standard Edition. ... I double checked the check list in server management and enabled VPN to the appropriate ...
www.chicagotech.net/Q&A/vpn25.htm


cannot establish VPN with error 721 and 800 The client setup VPN behind a Cisco 678 DMT. Whenever he tries to establish the VPN, he receives Error 721 or 800. Troubleshooting: 1. ...
www.chicagotech.net/cisco/vpngre1.htm



Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Homer Jay" <someone@microsoft.com> wrote in message news:eCGNbOy2GHA.3476@TK2MSFTNGP04.phx.gbl...
Hi,

I am unable to connect to a VPN on my server remotely, every time I try and
connect I get an error: "Error 800: Unable to establish the VPN Connection.
The VPN server may be unreachable, or security parameters may not be
configured properly for this connection."

If I am connected to the same network as the server, the connection works
fine. Only when trying to connect remotely do I get problems. Sorry I can't
give any more information, to be honest, I don't know exactly what
information would be useful in trying to get the problem sorted.

Thanks.


Reply With Quote
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