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Unable to VPN to Windows 2003 Server using Netgear WPN824 router and Transact modem combination

Posted on 2007-11-18
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Last Modified: 2012-08-13
Hi there,

I am having some issues creating a VPN connection using the following configuration:

1. Windows 2003 Server Standard Remote Access Service
2. Transact supplied modem
3. Netgear WPN824 wireless router

I want to be able to connect remotely to a server using a VPN connection, then manage the server using pcAnywhere.  This server has just recently moved from one office to another, with the previous office also having a Transact modem and same ISP but with a different router (although it was a Netgear brand).  This all worked without any problems and the configuration of the server RAS has not changed at all.  

When I moved the server to its new office, we hooked up to the same ISP again, but with a different account, along with a Transact modem.  I purchased a NetGear WPN824 router and can connect to it via its IP address across the Internet (ie I can administer the router without any problems), however when I try to create a VPN connection to the server from home it searches for the address and times out.  I have done the following:

- In the port forwarding/port triggering section of the router configuration, I have added port 1723 with a forward to the server IP address
- From the server, if I use www.canuseeme.org, and I specify port 1723, it tells me that I "cannot be seen".  If I use other configured ports however (eg 80), I can be seen, so this port is obviously being blocked somehwere
- If I try to look at the Windows firewall settings on the server itself, I receive the error message "Windows firewall cannot run because another program or service that is running that might use the network address translation component (Ipnat.sys)."

The ISP has confirmed that port 1723 is not being blocked by them, so the only thing I can think is that some sort of firewall is blocking it, but I am not sure where.  

Does anyone have any ideas as to what mightbe going on?  I am happy to provide further information if required.

Thanks!

Pete
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Question by:peterkennedy
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sveashwar earned 500 total points
ID: 20307577
instead of forwarding the port to ur server try opening port 1723/47 together in case firewall function
is in ur router and also try establish vpn from ur local network and step further
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by:peterkennedy
ID: 31409790
Thanks for your help.  It turned out that the router I had did not support opening ports and used port forwarding instead, which was not sufficient for what we needed.  I ended up purchasing another router (Netgear FVS wireless) which worked first time.
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