proxy via ssh

proxy_via_ssh.sh

# server: ss and polipo installed.
# polipo_port:8123, polipo config proxy type as socks5, and set corresponding ss_port
# then ssh to the machine which need proxy from server. assume your ss_port is 1080:
# ssh -R <port_on_target_machine>:<proxy_machine_address>:<correspon bindding port>
ssh -R 8123:localhost:8123  -R 1080:localhost:1080   target_machine_ip

# at target_machine:
if [[ "$1" == "off" ]]; then
  unset http_proxy
  unset https_proxy
  unset socks_proxy
  unset no_proxy
  echo "proxy turned off"
else
  export http_proxy=http://localhost:8123
  export https_proxy=http://localhost:8123
  export socks_proxy=socks://localhost:1080
  export no_proxy=127.0.0.1,localhost
  echo "proxy turned on"
fi