Hi, I am using a Cisco 837 router with a ADSL connection to the Internet. I need to use a VPN connection from my PC to a Windows 2003 VPN server over the Internet, i.e.
my PC using Windows XP connects a VPN connection via the default gateway (Cisco 837 router) -> Internet -> a site with a Nokia ADSL modem (gateway) -> the Windows 2003 VPN server (192.168.1.5)
The VPN connection connects fine with no problems except for I cannot download anything more than 2kb (binary files, like a GIF picture) from the Windows server via the VPN connection. However, text files larger than 2kb or any size are fine. I also cannot use Remote Desktop connection to the Windows 2003 server either - it brings up a grey background window and does not go further than that. I notice the VPN connection's status Sent total is much greater than the Received bytes total.
I was using a normal Netgear ADSL router before and never have any problems. The above problem only occurs when I started using the Cisco 837 router. I think it's the MTU problem, but tried resetting and restarting with no luck.
Can any one help on this one?