Peter,
The firewalling and NAT is done on the linux server. I haven't done PPP since the distant days of dial-up, though, so good to hear it is easy to configure.
Thanks,
Jenny
Sounds like just the job. One caveat I came across - my ISP (BT) doesn't require a password, as authentication is based on the incoming line. However, I did need to use a dummy password in the wifi router's config otherwise it wouldn't connect properly. I think that was probably just a limitation of the router, though it could have been the modem. Worth noting anyway.
Peter.