Getting past *two* NAT routers
picarules "at" earthlink.net
Mon Jan 10 21:57:01 2005
>Hmm... Wierd. What kind of DSL modem do you have? My DSL modem is a
>SpeedStream and it connects to a separate router
Aha. Therein lies the rub. I use an integrated device, the ZyXEL 645ME-A1.
"Plug-and- Play Connectivity
Pre-configured with a service provider's settings, the Prestige 645-A1 series can be automatically installed and will work with an ADSL connection without manual configuration.
Built-in PPPoE Feature (Prestige 645R-A1/Prestige 645ME-A1 Only)
Incorporating ZyXEL's first-in-the-world PPPoE implementation, the Prestige 645-A1 series...features save time by eliminating the need to install software. "
So that's what the Telnet-accessible setting for Internet Access->Encapsulation is. It can be RFC 1483, PPPoA (ATM), ENET ENCAP, or--guess what?--PPPoE! This setting is not available in the ISP's web-based configurator, but is locked at PPPoE. Apparently a normal PPPoE connection is handled by software at the computer. (It may not be usable with a normal router since a normal router doesn't have the capability to log in before it starts distributing packets.) This is the option I've been talking about--divorcing the modem from its NAT capability altogether and letting the Mac take over the PPPoE work as well as the LAN. OS X has a firewall as well as NAT capabilities.
Which raises a question: Say I find a way. If the modem is no longer a router, how do I get back into it? Seems like it would lose its own IP. Can you access any of the settings on your SpeedStream?