(1) A connection to a device outside the computer's cabinet. Contrast with internal interface.
(2) A connection to the WAN side of a router. The WAN may be a public or private network. Contrast with internal interface.
"external interface." YourDictionary, n.d. Web. 15 May 2018. <http://www.yourdictionary.com/external-interface>.
external interface. (n.d.). Retrieved May 15th, 2018, from http://www.yourdictionary.com/external-interface