Is it safe to designate a DMZ host on the T3200m?

A DMZ host is not protected by the firewall and may be vulnerable to attack. Designating a DMZ host may also put other computers in the local network at risk, so security implications should be carefully considered and the host protected if necessary. To activate DMZ Hosting, click the Enable radio button and enter the device's IP address in the appropriate text boxes. (Page 36)