If your underbelly is that soft you have major security issues. There are dozens and dozens of ways to get a network probe behind a firewall. Pretty much anythi

If your underbelly is that soft you have major security issues. There are dozens and dozens of ways to get a network probe behind a firewall. Pretty much anything that can be told to fetch anything anywhere can possibly be used. HTML can do a host scan or even a port scan without JavaScript using maliciously crafted DNS records and img or other tags combined with the use of timing to determine which ones are blocking and which ones got a connection refused or a connection right away. Firewalls are a much more porous than most people think. It's only a first line of defense to prevent badly configured or broken junk on your network from being instantly exploitable. http://www.elitefeet.com/wp-content/uploads/wooden-gate-no-fence.jpg http://www.elitefeet.com/wp-content/uploads/wooden-gate-no-f...