The sysadmin's guide to repurposing an RJ45 port ...

A router's wide area network (WAN) port acts as its gateway to other networks, providing an interface for the router to send outgoing traffic over. Computers should not be connected to a router's WAN ...

Ethernet ports are usually just relegated to connecting computers to routers to facilitate an internet connection, but they're capable of much more than that.

The internet relies on a system of addresses that treats every computer, tablet and smartphone as a distinct device, allowing all of them to communicate with each other. Because many kinds of devices ...

Netstat, the TCP/IP networking utility, has a simple set of options and identifies a computer’s listening ports, along with incoming and outgoing network connections. This data can be very helpful if ...

Data packets travel to and from numbered network ports associated with particular IP addresses and endpoints, using the TCP or UDP transport layer protocols. All ports are potentially at risk of ...