The 3G wireless connects the router to the provider network and is inherently not a point to point connection.
There may be a way to achieve this effect even though it is not inherent to the connection. You could configure the router with the 3 G card to connect to your head end router using an IPSec tunnel with GRE. The router would need a static route to the tunnel end point so that it could bring up the tunnel. You could then run a dynamic routing protocol over the GRE tunnel to advertise a default route (or you could set a static default route pointing over the GRE tunnel). This results in an environment in which traffic from the router LAN is effectively going over a point to point connection to your head end router. I have implemented this kind of thing, except not on a 3G connection, and it works quite well.
You could certainly use a router with a 3 G wireless card to establish a VPN tunnel to your ASA and all the traffic to the ASA would be protected. But without the GRE I am not sure that you have the ability to send traffic only to the ASA.
With the GRE you can point a default route to the GRE and all traffic goes over the (virtual) point to point connection (you have effectively eliminated any other way to get out). Without GRE I do not see much alternative to having the default route just point to the outside interface with the G 3 provider as the next hop. And then you have lost the restriction to point to point. Or did I not understand correctly what you need when you described that you wanted a point to point to a particular network?
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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