|This article does not cite any references or sources. (November 2009)|
|Original author(s)||Craig Leres|
|Developer(s)||Lawrence Berkeley National Laboratory Network Research Group|
|Initial release||v1.0 Tue Jun 16 3:05:31 PDT 1992|
|Stable release||2.1a15 / July 28, 2006|
|License||3-clause BSD source with autoconf parts under GNU General Public License|
arpwatch is a computer software tool for monitoring Address Resolution Protocol traffic on a computer network. It generates a log of observed pairing of IP addresses with MAC addresses along with a timestamp when the pairing appeared on the network. It also has the option of sending an email to an administrator when a pairing changes or is added.
Network administrators monitor ARP activity to detect ARP spoofing.
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