Package knock-server

A port-knocking server/client

Knock is a port-knocking server/client. Port-knocking is a method where a
server can sniff one of its interfaces for a special "knock" sequence of
port-hits. When detected, it will run a specified event bound to that port
knock sequence. These port-hits need not be on open ports, since we use
libpcap to sniff the raw interface traffic. This package contains the
knockd server.

General Commands (Section 1)
knockd is a port-knock server. It listens to all traffic on an ethernet (or PPP) interface, looking for special "knock" sequences of port-hits. A client makes...