- #nc - h GNU netcat 0.7.1,
- a rewrite of the famous networking tool.Basic usages: connect to somewhere: nc[options] hostname port[port]...listen
- for inbound: nc - l - p port[options][hostname][port]...tunnel to somewhere: nc - L hostname: port - p port[options] Mandatory arguments to long options are mandatory
- for short options too.Options: -c,
- --close close connection on EOF from stdin - e,
- --exec = PROGRAM program to exec after connect - g,
- --gateway = LIST source - routing hop point[s],
- up to 8 - G,
- --pointer = NUM source - routing pointer: 4,
- 8,
- 12,
- ... - h,
- --help display this help and exit - i,
- --interval = SECS delay interval
- for lines sent,
- ports scanned - l,
- --listen listen mode,
- for inbound connects - L,
- --tunnel = ADDRESS: PORT forward local port to remote address - n,
- --dont - resolve numeric - only IP addresses,
- no DNS - o,
- --output = FILE output hexdump traffic to FILE(implies - x) - p,
- --local - port = NUM local port number - r,
- --randomize randomize local and remote ports - s,
- --source = ADDRESS local source address(ip or hostname) - t,
- --tcp TCP mode(
- default) - T,
- --telnet answer using TELNET negotiation - u,
- --udp UDP mode - v,
- --verbose verbose(use twice to be more verbose) - V,
- --version output version information and exit - x,
- --hexdump hexdump incoming and outgoing traffic - w,
- --wait = SECS timeout
- for connects and final net reads - z,
- --zero zero - I / O mode(used
- for scanning) Remote port number can also be specified as range.Example: '1 - 1024'
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