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VPN connection not working on SBS2011

Hi,
I have SBS2011 where I activated VPN connection in SBS Console and the status is ON.
I created a port forwarding on Linksys router with port number 1723 so that it is forwarded to internal IP 192.168.1.5 which is IP address of SBS2011.
But when I try to connect to SBS2011 using VPN connection on my Windows 7, it fails with "Connection failed with error 800".
 I ran "troubleshooting" option on WIn7, but did not find anything.
 Can you help?
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sglee
Asked:
sglee
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1 Solution
 
Leon KammerCommented:
H sglee,

This may be your router firmware, if the Linksys router is old, it may need a firmware upgrade, else it will advertise a 0 window size on port 1723 causing the error you are encountering.

Cheers

Leon
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sgleeAuthor Commented:
@Leon
You may be right because I just established VPN connection from internal PC to SBS2011 and verified that the PC has two IP address: one thru local ethernet and another one from VPN connection.
I have never had to adjust Linksys router in order for VPN to work, but let me check to see if I can apply firmware on it.
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sgleeAuthor Commented:
@Leon,

  I googled on regarding "No VPN connection through WRT54G2" subject and found this article:
http://community.linksys.com/t5/Wireless-Routers/No-VPN-connection-through-WRT54G2/td-p/177826

In it, I saw the following paragraph:
***********************************************
‎08-05-2008 06:03 PM
My workaround was taking the router back and getting a D-Link router.  Had it set up in 10 minutes with the VPN working, and staying connected.  I agree, there is something with the firmware on the router
***********************************************

I am going to get a different router instead of wasting my time on this.
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