nc
TLDR
Listen on port
$ nc -l [8080]
Connect to host$ nc [host] [port]
Send file$ nc [host] [port] < [file.txt]
Receive file$ nc -l [port] > [file.txt]
Port scan$ nc -zv [host] [20-30]
UDP mode$ nc -u [host] [port]
Set timeout$ nc -w [5] [host] [port]
Verbose mode$ nc -v [host] [port]
SYNOPSIS
nc [options] [host] [port]
DESCRIPTION
nc (netcat) is a networking utility. It reads and writes data across network connections.
The tool creates TCP/UDP connections. Often called the "network Swiss army knife."
nc is versatile network tool.
PARAMETERS
HOST
Target hostname or IP.PORT
Port number or range.-l
Listen mode.-v
Verbose output.-z
Zero-I/O mode (scanning).-u
UDP mode.-w SECS
Timeout seconds.--help
Display help information.
CAVEATS
Multiple implementations exist. Features vary by version. Security implications.
HISTORY
Netcat was written by Hobbit in 1996 and has become an essential network debugging tool.
