A small startup company has hired you to harden their new network. Because funds are limited, you have decided to implement a unified threat management (UTM) device that provides multiple security features in a single network appliance: Firewall VPN Anti-spam Antivirus You join the UTM device to the company's Active Directory domain. The company's traveling sales force will use the VPN functionality provided by the UTM device to connect to the internal company network from hotel and airport public Wi-Fi networks. Which weaknesses exist in this implementation