Definition: nwatch: Network service detector. NWatch is a sniffer but can be conceptualized as a "passive port scanner", in that it is only interested in IP traffic and it organizes results as a port scanner would. The advantage of this tool is that services that is open for a short period of time can be detected with NWatch while successive nmap scans will miss them. The disadvantage is that the service have to be actively used to be detected.

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Source: Debian 3.0r0 APT / Linux Dictionary V 0.16
http://www.tldp.org/LDP/Linux-Dictionary/html/index.html
Author: Binh Nguyen linuxfilesystem(at)yahoo(dot)com(dot)au
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