SSH Tunnel

tunnel.sh

#!/bin/bash
# --------------------------------------
#
#     Title: SSH Tunnel / Socks5 Proxy Script
#    Author: Terry Wang
#     Email: i (at) terry (dot) im
#  Homepage: http://terry.im
#      File: tunnel.sh
#   Created: 1 Oct, 2012
#
#   Purpose: Establishes/terminates a SSH Tunnel
#
# --------------------------------------
########### Setup SSH Proxy #############
# Set up SSH Host with Public Key Authentication
export MY_SSH_HOST=ubuntu@cloud.terry.im # username@host
export MY_PROXY_PORT=1080 #Socks5 port
############ End of Setup #############

if [ ! -f /tmp/.ssh_tunnel ]; then
    echo "Establishing SSH Tunnel"
    ssh -f -D $MY_PROXY_PORT $MY_SSH_HOST "if [ -f ~/.ssh_tunnel ]; then rm ~/.ssh_tunnel; fi; while [ ! -f ~/.ssh_tunnel ]; do echo > /dev/null; done" && touch /tmp/.ssh_tunnel
    echo "SSH Tunnel established, socks5 proxy is available on port $MY_PROXY_PORT."
    #You need libnotify to use notify-send
    #notify-send -i /usr/share/icons/Human/scalable/categories/gnome-system.svg "HTTP Proxy" "Connected to the proxy"
else
    echo "Terminating SSH Tunnel"
    ssh $MY_SSH_HOST "touch ~/.ssh_tunnel"
    rm /tmp/.ssh_tunnel
    echo "SSH Tunnel terminated."
    #You need libnotify to use notify-send
    #notify-send -i /usr/share/icons/Human/scalable/categories/gnome-system.svg "HTTP Proxy" "Disconnected from the HTTP Proxy"
fi
exit 0