Most people today have firewalls in place providing some amount of protection from the outside world. Protection, however, does not necessarily mean you are covered. Before, you get too comfortable; you should evaluate your firewall for configuration flexibility. You should also review the number and types of firewalls you have deployed. In most enterprise networks, a single firewall protecting you from the Internet is not sufficient. Finally, unless you have someone dedicated to reviewing the firewall logs (assuming your firewall creates a log file), then you may be missing key information you need to insure that your firewall remains as effective as you once thought it was.