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UDPTunnel is a small program which can tunnel UDP packets bi-directionally over a TCP connection. Its primary purpose (and original motivation) is to allow multi-media conferences to traverse a firewall which allows only outgoing TCP connections. UDPTunnel also can be used for security tests in networks.

Installed size: 37 KB
How to install: sudo apt install udptunnel

  • libc6
  • libnsl2

Tunnel UDP packets over a TCP connection

root@kali:~# udptunnel --help
udptunnel: invalid option -- '-'
Usage: udptunnel -s TCP-port [-r] [-v] UDP-addr/UDP-port[/ttl]
    or udptunnel -c TCP-addr[/TCP-port] [-r] [-v] UDP-addr/UDP-port[/ttl]
     -s: Server mode.  Wait for TCP connections on the port.
     -c: Client mode.  Connect to the given address.
     -r: RTP mode.  Connect/listen on ports N and N+1 for both UDP and TCP.
         Port numbers must be even.
     -v: Verbose mode.  Specify -v multiple times for increased verbosity.

Updated on: 2021-Nov-26