Introduction to Internet Sharing Between Computers

Sharing an internet connection between two computers can be achieved in various ways, among which using a single Ethernet cable is both cost-effective and straightforward. This article explores different methods to achieve this, including traditional wired solutions and modern wireless alternatives. These methods are particularly useful in dorm rooms or any spaces with limited Ethernet port availability.

Using an Ethernet Switch and Jumper Cable

One common method involves utilizing a Ethernet switch to bridge the gap between two computers sharing a single Ethernet port. An Ethernet switch allows multiple devices to communicate with each other over a network. You can purchase a cheap Ethernet switch with a Ethernet jumper cable to connect two computers to two different ports on the switch. Essentially, this converts a point-to-point connection into a network, allowing both computers to share the internet through the switch.

While this solution is efficient, it may not be optimal in roommate environments filled with wireless devices like smartphones and tablets. Here, investing in a wireless router could provide a more comprehensive solution. For instance, a used D-Link DIR-615, priced around $20, can serve as both a switch and a wireless access point. Although its network speed is only 100 Mb/sec instead of the 1000 Mb/sec, it's still well within the capacity of most internet connections provided by the wall socket.

Benefits of a Wireless Router

A wireless router offers several advantages over the simple Ethernet switch and jumper cable setup. First, it is more convenient and does not require multiple cables running around the room. Second, a wireless router can be set up to share the internet wirelessly to the second computer via its Wi-Fi capabilities. This setup essentially eliminates the need to run additional cables between two computers. Third, the router can act as a switch, connecting all devices as part of a network, which can be beneficial in dorms or shared spaces where multiple devices are connected.

Alternative Methods for Internet Sharing

For those who prefer to use Ethernet cables, another option is to use a USB network adapter. This method involves the first computer acting as a server, sharing its internet connection with the second computer via an Ethernet cable. The first computer must have a USB network adapter installed that can be shared with the second computer through a standard Ethernet cable. This solution is effective and can be implemented easily, though it may not be as visually clean as the wireless router method.

Old School Solution: Thick Coax Ethernet Cable

For those interested in a more retro approach, using a 10BASE5 thick coax Ethernet cable and three vampire taps can also be a viable solution. A vampire tap is a simple piece of equipment that allows a network cable to be divided and used for two connections without cutting the cable. While this method is useful for older equipment, it may require additional conversion electronics to interface with modern network sockets.

Conclusion

While sharing an internet connection between two computers can be challenging, several methods can make this task simple and efficient. Whether you opt for a wireless router, a switch with jumper cables, a USB network adapter, or a coax Ethernet cable, the key is to choose the method that best suits your needs and setup. These solutions are especially useful for students sharing a limited number of Ethernet ports, such as in dorm rooms or small offices.