Netcat

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• Windows: ncat.exe
• Linux:
  • nc (netcat-openbsd package)
  • ncat (nmap package)

nc examples

• echo "text to send" | nc IP port
• echo "text to send" | nc 10.10.10.10 54

• Forward port:

nc -l -p ORIGIN_PORT -c 'nc DESTINATION_IP DESTINATIO_PORT'

nc -l -p 2222 -c 'nc 10.10.10.4 8888'

Related commands

• iperf
• pv </dev/zero | ssh REMOTE_SERVER 'cat >/dev/null'

See also

• OpenSSH (changelog): /etc/ssh/sshd_config | /etc/ssh/ssh_config | ~/.ssh/ | openSSL | sshd logs | sftp | scp | authorized_keys | ssh-keygen | ssh-keyscan | ssh-add | ssh-agent | ssh | Ssh -O stop | ssh-copy-id | CheckHostIP | UseKeychain, OpenSSF
• telnet, netcat, nc, nc -l, ncat, socat, ngrok
• Security tools: Vulnerability scanner, port scan, Host sweep, nmap, nping, ncat, nc, psad, Gordon Lyon