fake static IP; SBC; Netopia; VPN and NAT

["Jerome Draper" <jdraper@xxxxxxxxxxxxx>]

SBC fake static IP address:

For those interested in VPN and the requirement for static IP I have
finished trudging my way through a morass spun by SBC.  Althought their lit
says they offer static IP's they really don't.  The static IP's the "offer"
are inside my customer's LAN which is useless as the customer uses NAT and
private addresses inside.

To check whether a Netopia DSL router (in this case an R3100T) is using
"fake" IP addresses do the following from the quick menus:

Under user profile <internet>, if you see the IP address 127.0.0.2 you know
that this is Netopia's way to ask for a userid/pw for chap authentication
instead of an IP address for authentication; In this case the router gets it
's IP address from a server (in SBC's case a Radius server) instead of as
defined in the router.

You cannot do either NAT or VPN with this setup.

Hoping to save others from the fray.

Jerry



Jerome Draper, Trilobyte Software Systems, since 1976
Network and Connectivity Specialist -- Mac's, LAN's, PC's, Linux, Sun, and
iSeries
Representing Synapse, Nlynx, Perle, CLI, Intermate and Others .....
http://www.trilosoft.com - (415) 457-3431 - (415) 258-1658fax -
jdraper@trilosoft.com