Netcat Command Cheatsheet

Netcat Cheatsheet

Netcat listening on port 567/TCP

$ nc -l 567

Connecting to that port from another machine

$ nc 1.2.3.4 5676

To pipe a text file to the listener

$ cat infile | nc 1.2.3.4 567 -q 10

To have the listener save a received text file

$ nc -l -p 567 > textfile

To transfer a directory, first at the receiving end set up

$ nc -l -p 678 | tar xvfpz

Then send the directory

$ tar zcfp - /path/to/directory | nc -w 3 1.2.3.4 678

To send a message to your syslog server (the <0> means emerg)

$ echo '<0>message' | nc -w 1 -u syslogger 514

Setting up a remote shell listener

$ nc -v -e '/bin/bash' -l -p 1234 -t

or

$ nc l p 1234 e "c:\windows\system32\cmd.exe"

Then telnet to port 1234 from elsewhere to get the shell.

Using netcat to make an HTTP request

$ echo -e "GET http://www.google.com HTTP/1.0nn" | nc -w 5 www.google.com 80

Making a one-page webserver; this will feed homepage.txt to all comers

$ cat homepage.txt | nc -v -l -p 80

Rousan Ali

JS Developer

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