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For those that want a cheap, easy way to share their SBC DSL with multiple computers, the 5100B CAN be used as a simple router. As the screenshot above shows, the modem is listed as a single device router, meaning that it will only allow one connection. This actually only applies to how many WAN IPs it will pass thru.
To get around this limitation, simply hard code the LAN IPs of the different PCs into the same IP range as the modem. 192.168.0.x, subnet mask 255.255.255.0 and the gateway of 192.168.0.1. Assign the DNS entries appropriate for the area you reside.
Now, just put a switch or hub in and woila!, you now have a very simple NAT router, and can share that DSL. Keep in mind, there are zero advanced features, so if you need those, invest in a dedicated DSL router, however this setup should be sufficient for many who just want to share the DSL and don't want to spend a lot of money to do so.
EDIT--This will also help eliminate the annoying connection drops that happens with WinXP SP2!
Originally contributed by kmac1 at /forum/remark,11542453~mode=flat
Added 12-16-2004: The "visibility" of the LAN-side when using this unit as a simple router was investigated in /forum/remark,12133909~mode=flat :
OK, I tested it and here are my results.
Thanks to JimThePCGuy for raising the question and doing the heavy lifting.