vpn and linksys router

[rss53]

Hi,

My home network consists of a cable modem wired to a befsr41 linksys wired router which is wired to a wrt54g linksys wireless router.

I have 3 win xp machines. 1 is wired into the the befsr41, the second is wired to the wrt54g and the third connects wirelessly to the wrt54g.

I'm told that I am using the wireless router as a switch.

On the wireless xp machine I am using a static address 192.168.1.5 and on the wired router I am port forwarding 1763, 1723, 500, 47 -51 all to 192.168.1.5

When I connect to my vpn I get a system tray Icon that shows T/R traffic but once I make this connection I can no longer ping in a cmd window and my internet browser usually stops working - I think this happens all the time but i could be mistaken. If I try to browse my network I see my network but never the vpn network. So it looks like I have an established connection but i can't see anything.

The strange part is I get exactly the same results if I try to establish the vpn connection on the other two machines. Even though they both have dynamic Ip addresses and I don't change any of the port forwarding.

The only way I can make this work is to connect to the cable modem directly. Then it works like a charm. The vpn connection is just what's provided with widows xp connection wizard. Can some one please tell me how to resolve this problem? The vpn address is vpn.babson.edu

Thanks for your help

 

[ETWatson]

Though you have probably already done so, i would first check the management interface of the befsr41 and validate that both PPTP and L2TP passthrough are enabled (on my model it's at: Security > VPN). If it's an older version of firmware those selections might have come set to diabled by default.

Assuming that's not it, it would be useful to have you try the following (and report back results) from both the working/direct to cable connection and the not working via router connection:

At the command window type in the following command: ipconfig /all and hit enter. In both connections this should return 2 sections of information related to each of the network adapters in play (the physical, local adapter and the 'virtual' adapter connecting to Babson).

copy/paste from a command window can be tricky so if not familiar with that, please record the IP/SM/GW/ and importantly the DNS servers that are listed there.