ADSL Modem-specific notes
The Asus 6000 is an ADSL modem/router. This means you can plug in into your LAN and it takes care of doing NAT, etc. With the later firmware versions you can also use it as a forwarding nameserver. It supports pinholing and has "special" NAT support for some protocols that don't play nice.
You can configure the modem by telnetting to it. It also runs a webserver on port 80.
Its default IP address is 192.168.1.1.