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Port 7 echo

echo (UDP, TCP). This simple port just echoes whatever is sent to it. However, this can be used in many attacks, such as fraggle..

  • RFC862
  • ICP - Internet Caching Protocol-This protocol is used by HTTP caching proxies in order to coordinate working together in a cluster. Part of this implementation includes bouncing packets off the echo port in order to test if the peers are alive.