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Routing or bridging between two vpn connection

Posted on 2006-11-03
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Last Modified: 2010-04-12
I am trying to route traffic from one remote to another remote via my VPN network.  Here is the situation.  

My main office has a Netopia R9100 installed. (10.1.2.1)  Remote A also has a R9100. (128.1.96.1)  Main and Remote A are connected via a PPTP VPN tunnel, which works great.  I can ping them, and they can ping me.  

Remote B is a hosting center for our web server and SQL.  Main and Remote B have an IPSec VPN connection that works great, the IP address range for that network system is 206.188.1.113-23.

My problem is Remote A needs to access the server at Remote B.  Is it possible to pass traffic through the main router.  I have tried entering a static route in the main router: 206.188.1.115 next hop 206.188.1.113, but the traffic keeps routing out the main routers WAN interface instead of following Remote B VPN tunnel.

So I need traffic to flow like this    128.1.96.100 (PC) ---LAN---> 128.1.96.10 (routerA) ---VPN---> 10.1.2.1(routerMain) ---VPN---> 206.188.1.113(routerB) ---LAN---> 206.188.1.115 (Server)

I hope I explained this correctly...

thank you in advance.
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Question by:Bill_Millikin
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Rob Williams earned 500 total points
ID: 17872948
First this may not be possible with your router. Many routers do not support having traffic coming in on one interface and being router back out through the same interface. You need a router capable of a hub and spoke configuration.

Having said, as a test, try on a client machine at site B adding the following route from a command window, and then try pinging an IP on site A
route  add  128.1.96.0  mask  255.255.255.0  10.1.2.1
assuming the subnet mask and router IP's are correct.
The main office router should already know how to connect to site B. If this works you can add the static route to site B's router, or you can try that as well/instead.
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