mirror of
https://github.com/Ponce/slackbuilds
synced 2024-11-24 10:02:29 +01:00
10 lines
596 B
Text
10 lines
596 B
Text
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.
|
|
|