I have not done this and I’m not sure it will work (the dial-up server might have to be on a computer other than the one running ICS) or how well it will work, but I might try it for the fun of it, time permitting (and when my son returns my dial-up MODEM)… The procedure would make a dial-up connection to your computer with the DSL MODEM, and then share the Internet connection via local “local” network thus formed. On the computer with the DSL and Dial-up MODEMS (or on a computer on the local network with a dial-up MODEM) click Start, Settings, Add/Remove Programs, Windows Setup, Communications, Details, and check Dial-up Server. After installing the Dial-up Server, click Start, Settings, Control Panel, Dial-up Networking, Connections, Dial-up Server and setup the connection.
Use the Win ME ICS Wizard to setup the Internet Sharing with the dial-up adapter as the “Home” adapter and the network adapter to the DSL MODEM as the “Shared” adapter, the opposite of the “normal” ICS setup with a dial-up connection to the Internet and the network adapter as the connection to the local network.
Setup the remote per the second reference with the TCP/IP protocol. The remote becomes a computer on the local network. Configure the remote TCP/IP to obtain its IP address automatically. The ICS DHCP server dial-up server should furnish the IP address and enable Internet sharing. Set up a gateway for ICS, etc. per the third reference.
Q139710, How to Enable Dial-Up Networking Server Capabilities, http://support.microsoft.com/support/kb/articles/Q139/7/10.asp?
Q145843, How to Connect to a Remote Server, http://support.microsoft.com/support/kb/articles/Q145/8/43.ASP
How to Network and Share an Internet Connection With Windows 98 Second Edition, http://duxcw.com/digest/Howto/network/win98se/tcp.htm
How to Share a Cable MODEM with Windows 98 Second Edition (same as most DSL setups)
Another experiment would be to use the Barricade’s (http://duxcw.com/digest/Reviews/Network/smc/smc7004br/smc7004br.htm) serial port for a dial-up to a local network and then DSL or Cable MODEM on its WAN port… But I think that would require PPP implementation somewhere on the local network outside of the Barricade. If it could be made to work without PPP on a local PC, it would be the best solution.
I believe Linux could do it.
If anyone has or wants to try some of this stuff, I would very much like to know if it works.