What is a crossed or cross-over ethernet cable and how do i make one?

A crossed ethernet cable is used for communication between two computers without using network gear such as a router, switch or a hub. To identify a cross-over ethernet cable, hold one end as if to plug it into a wall jack, the locking tab down (contacts facing you). The contacts are numbered 1-8 from left to right. One end will have a different color sequence to the other. A crossover cable, like a straight through cable, works both ways. Using the 568B standard, the wiring sequence for ONE end (that may be labeled T-568B): PIN 1 - White/orange PIN 2 - orange PIN 3 - white/green PIN 4 - blue PIN 5 - white/blue PIN 6 - green PIN 7 - white/brown PIN 8 - brown The for the OTHER end (that may be labeled T-568A): PIN 1 - White/green PIN 2 - green PIN 3 - white/orange PIN 4 - white/brown PIN 5 - brown PIN 6 - orange PIN 7 - blue PIN 8 - white/blue If both ends have the same color sequence (usually T-568A, but it doesn't really matter), it is a straight-through cable.  more