$ ./tcpproxy.py -h
usage: tcpproxy.py [-h] [-ti TARGET_IP] [-tp TARGET_PORT] [-li LISTEN_IP]
                   [-lp LISTEN_PORT] [-pi PROXY_IP] [-pp PROXY_PORT]
                   [-pt {SOCKS4,SOCKS5,HTTP}] [-om OUT_MODULES]
                   [-im IN_MODULES] [-v] [-n] [-l LOGFILE] [--list]
                   [-lo HELP_MODULES] [-s] [-sc SERVER_CERTIFICATE]
                   [-sk SERVER_KEY] [-cc CLIENT_CERTIFICATE] [-ck CLIENT_KEY]

Simple TCP proxy for data interception and modification. Select modules to
handle the intercepted traffic.

optional arguments:
  -h, --help            show this help message and exit
  -ti TARGET_IP, --targetip TARGET_IP
                        remote target IP or host name
  -tp TARGET_PORT, --targetport TARGET_PORT
                        remote target port
  -li LISTEN_IP, --listenip LISTEN_IP
                        IP address/host name to listen for incoming data
  -lp LISTEN_PORT, --listenport LISTEN_PORT
                        port to listen on
  -pi PROXY_IP, --proxy-ip PROXY_IP
                        IP address/host name of proxy
  -pp PROXY_PORT, --proxy-port PROXY_PORT
                        proxy port
  -pt {SOCKS4,SOCKS5,HTTP}, --pr