Created
August 2, 2012 14:13
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Secure SSH VNC Tunnel Bash/Ruby Script on Mac OS X
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#!/bin/bash | |
TARGET_IP="xx.xx.xx.xx" | |
TARGET_LOCAL_VNC_PORT=5901 | |
LOCAL_VNC_PORT=31543 | |
TARGET_WAN_SSH_PORT=22345 | |
TARGET_USER="keyvan" | |
ruby secure_vnc_tunnel.rb $LOCAL_VNC_PORT $TARGET_IP $TARGET_LOCAL_VNC_PORT $TARGET_WAN_SSH_PORT $TARGET_USER | |
echo "Entering SSH session ($TARGET_IP:$TARGET_WAN_SSH_PORT)" | |
ssh -p $TARGET_WAN_SSH_PORT $TARGET_USER@$TARGET_IP |
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#!/usr/bin/env ruby | |
LOCAL_TUNNEL_PORT = ARGV[0] | |
HOST_IP = ARGV[1] | |
HOST_LOCAL_TUNNEL_PORT = ARGV[2] | |
HOST_WAN_SSH_PORT = ARGV[3] | |
HOST_USER = ARGV[4] | |
def recently_ran?(secs) | |
File.open(__FILE__, "r+") {|f| @timestamp = f.mtime } | |
(Time.now - @timestamp) < secs | |
end | |
if recently_ran?(5) | |
puts "Recently built tunnel and VNC'd, skipping that." | |
exit | |
else | |
`touch #{__FILE__}` | |
puts "Killing port-stealing stale sessions" | |
`ps aux | grep "ssh -L #{LOCAL_TUNNEL_PORT}" | awk '{print $2}'`.split.each do |pid| | |
`kill -9 #{pid} > /dev/null 2>&1` | |
puts "Killed stale process #{pid}" | |
end | |
puts "Ports cleared (hopefully). Attempting to create a secure VNC tunnel." | |
fork { | |
`ssh -L #{LOCAL_TUNNEL_PORT}:localhost:#{HOST_LOCAL_TUNNEL_PORT} -p #{HOST_WAN_SSH_PORT} -N -f -l #{HOST_USER} #{HOST_IP}` | |
} | |
puts "Secure VNC tunnel to #{HOST_IP}:#{HOST_LOCAL_TUNNEL_PORT} constructed on localhost:#{LOCAL_TUNNEL_PORT}." | |
print "Launching VNC" | |
5.times do | |
sleep 1 | |
print '.' | |
end | |
puts | |
`open vnc://localhost:#{LOCAL_TUNNEL_PORT}` | |
puts "VNC launched." | |
end |
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