
1) Computer network security
Found on
https://www.crosswordclues.com/clue/middlebox

A middlebox or network appliance is a computer networking device that transforms, inspects, filters, or otherwise manipulates traffic for purposes other than packet forwarding. Common examples of middleboxes include firewalls, which filter unwanted or malicious traffic, and network address translators, which modify packets` source and destination....
Found on
http://en.wikipedia.org/wiki/Middlebox
No exact match found.