Topic: IPSEC VPN through PPPoA DSL Connection

[Mitch Dickerson]

ok, here's my soon to be situation.

I'm going to need to connect 3 offices to one main office via an IPSEC VPN.

The way I see it is I have too affordable solutions.  I can eather buy several linksys box's to link everything up, or since I've been using SME for about 3 years, I'd rather use some sme box's.

Each location has a PPPoA DSL connection where the modem pulls the real ip, and then nat's it to the server.  These modem's have some pretty neat NATing options.  I can set it up to pass all traffic going to the real IP, to an internal IP.

So lets Say the modem pulls a real IP of 12.12.12.23, and I have the modem setup to NAT to 192.168.1.20(the server's IP).  If from a remote location I pinged, or sent anything to 12.12.12.23, 192.168.1.20 would recieve it.

I know doing this works with these linksys IPSEC VPN box's, and I'm thinking it should work fine on the SME box's...but I'm not sure, since SME wouldn't actually have the real IP, I and haven't seen any post on any similiar situations in these forums.

Any help, suggestion's, or tips would be awesome.

Thanks,
Mitch