Yes it is.
Connecting a Linksys Wireless Router to a modem will allow computer users to achieve a wireless Internet connection. Plug the blue Ethernet cable into the port labeled, "Ethernet", on the back of the modem. Plug the other end of the blue cable into the port labeled, "Internet", on the router. Plug a second Ethernet cable into the port labeled, "1", on the back of the router, and plug the other end into the back of the computer.
The Cisco 2801 2-Port 10/100 Wired Router was released in the year 2004. You can find the Cisco 2801 router for sale used on eBay starting at $485.00.
console port
Unless your router has a mirroring port. So you can connect an internet filtering product (eg: WFilter) to the mirroring port in your router to do monitoring and filtering.
make a connection from the router's console port to your laptop's serial port and configure the router from your laptop.
"Internet" port in your router is a special port. Only cable from modem (or internet cable) goes in there. Some routers do allow to use it as a LAN port but then you can't use internet.
It's a cable used to connect from a Cisco router's DB60 serial port to a telecommunication company's equipment which provides you with a data link.
You need to have LAN cable CAT5 at least. There is a lan port located on the modem. Using the cable connect the port with the port located on the router. The port on the router should a label (WAN, Internet and so on) stating that it's devoted for internet.
crossover cable
A Cisco 7500 router is a chassis containing RSP blades and interface blades. The interface blades contain the actual working router ports, the RSP blades run the router IOS. At least one RSP is present per router, and each RSP has (like most Cisco routers) one console port and one auxiliary port. The other RSP, when present, acts only like a failover device.
To hook up a Cisco 7200 series router to your network you need to connect the Console and Auxiliary port cables, and then perform a quick configuration. It would be best to follow the quick start guide supplied with the router.
It gives you a wired connection to your internet router.