Creates an accessible URL to your local machine via SSH

gistfile1.rb

# config/tunnel.yml
public_host_username: username_ssh
public_host: my_public_domain
public_port: 8000
local_host: 0.0.0.0
local_port: 3000

# lib/tasks/tunnel.rake
namespace :tunnel do
  desc "Start a ssh tunnel"
  task :start => :environment do
    SSH_TUNNEL = YAML.load_file("#{Rails.root}/config/tunnel.yml")

    public_host_username = SSH_TUNNEL['public_host_username']
    public_host = SSH_TUNNEL['public_host']
    public_port = SSH_TUNNEL['public_port']

    local_host = SSH_TUNNEL['local_host']
    local_port = SSH_TUNNEL['local_port']

    puts "Starting tunnel #{public_host}:#{public_port} \
          to #{local_host}:#{local_port}"

    exec "ssh -nNT -g -R *:#{public_port}:#{local_host}:#{local_port} \
                           #{public_host_username}@#{public_host}"
  end
end