: Packet sniffers—programs, favorite among illegal hackers, that watch packets of data going by and record user names and passwords for later illicit use (1990s+ Computers)
A network monitoring tool that captures data packets and decodes them using built-in knowledge of common protocols. Sniffers are used to debug and monitor networking problems.
- Packet switch
[pak-it-swich-ing] /ˈpæk ɪtˌswɪtʃ ɪŋ/ noun 1. a method of efficient data transmission whereby the initial message is broken into relatively small units, or , that are routed independently and subsequently reassembled. noun 1. (computing) the concentration of data into units that are allocated an address prior to transmission noun a method of data transfer in […]
- Packet switch node
(PSN) A dedicated computer whose purpose is to accept, route and forward packets in a packet-switched network. (1994-11-30)