Simple SSH tunnel script for OS X.

sshtunnel.fish

#! /usr/local/bin/fish

set -l server_ip 0.0.0.0 # change this
set -l server_user root
set -l local_port 1234

function _ssh_tunnel_help
  echo "usage: sshtunnel <command>\n"
  echo "   open      Opens ssh tunnel to server and enables SOCKS proxy"
  echo "   close     Closes ssh tunnel and disables SOCKS proxy"
  echo "   help      Displays this message\n"
end

function sshtunnel
  if [ $argv[1] ]
    switch $argv[1]
      case 'open'
        sudo -v
        echo "enabling SOCKS proxy..."
        # sudo networksetup -setsocksfirewallproxy Wi-Fi 127.0.0.1 $local_port
        sudo networksetup -setsocksfirewallproxy Ethernet 127.0.0.1 $local_port
        # sudo networksetup -setsocksfirewallproxystate Wi-Fi on
        sudo networksetup -setsocksfirewallproxystate Ethernet on
        echo "tunneling..."
        ssh -f -D $local_port -C -N $server_user@$server_ip
        echo "tunnel opened."
      case 'close'
        sudo -v
        echo "killing ssh processes..."
        pkill ssh
        pkill ssh-agent
        echo "disabling SOCKS proxy..."
        # sudo networksetup -setsocksfirewallproxystate Wi-Fi off
        sudo networksetup -setsocksfirewallproxystate Ethernet off
        echo "tunnel closed."
      case '*'
        _ssh_tunnel_help
    end
  else
    _ssh_tunnel_help
  end
end