mirror of
https://github.com/Ponce/slackbuilds
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.. | ||
doinst.sh | ||
knock.info | ||
knock.SlackBuild | ||
rc.knockd.new | ||
README | ||
slack-desc |
Knockd and knock are a port-knock server and client, respectively. Knockd listens to all traffic on an ethernet (or PPP) interface, looking for special "knock" sequences of port-hits. A client makes these port-hits by sending a TCP (or UDP) packet to a port on the server. This port need not be open -- since knockd listens at the link-layer level, it sees all traffic even if it's destined for a closed port. When the server detects a specific sequence of port-hits, it runs a command defined in its configuration file. This can be used to open up holes in a firewall for quick access.