Two IP Addresses for One Router Creates Problem
Posted on 2005-03-10
We have two offices. Office A1 has a Qwest DSL with ActionTec modem using one of 5 static public IPs. Behind the modem is a Linksys RV082 router. The RV082 is assigned one of the static IPs and the ActionTec another. I enabled the VPN on the RV082 and can connect using the Linksys VPN client program. Good so far.
Office B2 has a different setup. It has a wireless broadband ISP with no modem provided. It's the only way to get Internet access at this location. A RJ45 plug comes out from the connection box on the wall (satellite disk on the roof points to a tower about a mile away). The ISP provided a static public IP but the router has to use a different IP address to connect. For example, let’s say the IP address provided by the ISP for connecting to the Internet through them is 10.10.10.10 but my public IP is 126.96.36.199. My ISP tells me they handle routing the 188.8.131.52 to the 10.10.10.10.
Okay, now for the problem. I go out and get another RV082 router because I want office A1 and B2 to talk to each other using the Linksys’ gateway to gateway VPN. However, the Linksys RV082 router at office B2 doesn’t seem to like the fact that it’s on 10.10.10.10 when it sees the 184.108.40.206 address. An error in the log says something about "I'm being call 220.127.116.11 but I’m really 10.10.10.10". Therefore, the two routers won’t talk to each other neither will the VPN client connect to the RV082 at office B2.
I’m thinking that I can set up a configuration just like the one at office A1. In other words, install a basic DSL modem (just like the ActionTec at office A1) for the Internet connection then place the RV082 behind it. But with this IP situation (18.104.22.168 going to 10.10.10.10) will this have any better chance of working? If not, what would be a possible solution?