Temporary socket file to create and use so that datagrams can be For UNIX-domain datagram sockets, specifies the local Specifies the IP of the interface which is used to send the Randomly instead of sequentially within a range or in the orderĮnables the RFC 2385 TCP MD5 signature option. Specifies that source and/or destination ports should be chosen Specifies the source port netcat should use, subject to privilege If no username is specified then authentication Specifies a username to present to a proxy server that requiresĪuthentication. Specifies the size of the TCP send buffer. Servers require this to finish their work.ĭo not do any DNS or service lookups on any specified addresses, Shutdown()the network socket after EOF on the input. Additionally, any timeouts specified with the -w option It is anĮrror to use this option in conjunction with the -p, -s, or -z Rather than initiate a connection to a remote host. Used to specify that netcat should listen for an incoming connection Option, the server socket is not connected and it can receive UDP Also causes a delay time between connections toįorces netcat to stay listening for another connection after itsĬurrent connection is completed. Specifies a delay time interval between lines of text sent and Specifies the size of the TCP receive buffer. simple TCP proxies - shell-script based HTTP clients and servers - network daemon testing - a SOCKS or HTTP Prox圜ommand for ssh - and much, much more Optionsįorces netcat to use IPv4 addresses only.įorces netcat to use IPv6 addresses only. Sending them to standard output, as bsdtelnet does with some. Nicely, and separates error messages onto standard error instead of Scanning, and deal with both IPv4 and IPv6. Send UDP packets, listen on arbitrary TCP and UDP ports, do port Involving TCP, UDP, or UNIX-domain sockets. The netcat (or nc) utility is used for just about anything under the sun

Nc netcat options