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Diffstat (limited to 'network/knock/README')
| -rw-r--r-- | network/knock/README | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/network/knock/README b/network/knock/README new file mode 100644 index 0000000000..1af140baea --- /dev/null +++ b/network/knock/README @@ -0,0 +1,10 @@ +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. + |