arpalert 2.0.3-1 (amd64 binary) in ubuntu feisty

 This package provides the arpalert daemon.
 .
 It listens on a network interface (without using 'promiscuous' mode) and
 catches all conversations of MAC address to IP request.
 It then compares the mac addresses it detected with a pre-configured list of
 authorized MAC addresses. If the MAC is not in list, arpalert launches a
 pre-defined user script with the MAC address and IP address as parameters.
 This software can run in daemon mode; it's very fast (low CPU and memory
 consumption).
 It responds at signal SIGHUP (configuration reload) and at signals SIGTERM,
 SIGINT, SIGQUIT and SIGABRT (arpalert stops itself)
 .
  Homepage: <http://www.arpalert.org/>