Routers

Note: If you are using Ethernet gateway routers, then make sure have your modem configured properly first. If you are using your modem just as fine directly to the PC, then you do not need to change anything on it unless you plan to use a different connection method like from PPPoE to PPPoA

This page is a just guide on how to share your cable or ADSL internet access with routers. There are two type of routers here. One is with a DSL WAN port while the other is with a Ethernet WAN port. Those with Ethernet WAN port are known as gateway routers while those with DSL WAN port are known as DSL router.

The difference between these two is that gateway routers requires an external modem to work with. The advantage is that it can work with any modem with an Ethernet port. That means that you can interswitch between cable or DSL or any internet connection which modem has an Ethernet port. The disadvantage is that it can only work with a bridge in DSL case, therefore 1577 type of DSL will not work with these routers. 

The router with a DSL WAN port are for DSL only but it do not require an external modem. It will also support all type of ADSL. There are no router like this for cable yet

If you use a router with a single public IP address, then you must switch NAPT on. This may cause some programs to stop working properly as it used to be. To understand more on NAPT, read this. Some of the solution to the problems you would face can be found here. 

Another thing to take note is regarding PPPoE. If this is the only way for you to get connected, then read about PPPoE and MTU size issue here