объединение и перенаправление сокетов (Concatenate and redirect sockets)
COMMAND EXECUTION OPTIONS
-e command, --exec command (Execute command)
Execute the specified command after a connection has been
established. The command must be specified as a full
pathname. All input from the remote client will be sent to
the application and responses sent back to the remote client
over the socket, thus making your command-line application
interactive over a socket. Combined with --keep-open, Ncat
will handle multiple simultaneous connections to your
specified port/application like inetd. Ncat will only accept
a maximum, definable, number of simultaneous connections
controlled by the -m option. By default this is set to 100
(60 on Windows).
-c command, --sh-exec command (Execute command via sh)
Same as -e, except it tries to execute the command via
/bin/sh. This means you don't have to specify the full path
for the command, and shell facilities like environment
variables are available.
--lua-exec file (Execute a .lua script)
Runs the specified file as a Lua script after a connection
has been established, using a built-in interpreter. Both the
script's standard input and the standard output are
redirected to the connection data streams.
All exec options add the following variables to the child's
environment:
NCAT_REMOTE_ADDR, NCAT_REMOTE_PORT
The IP address and port number of the remote host. In connect
mode, it's the target's address; in listen mode, it's the
client's address.
NCAT_LOCAL_ADDR, NCAT_LOCAL_PORT
The IP address and port number of the local end of the
connection.
NCAT_PROTO
The protocol in use: one of TCP, UDP, and SCTP.
