I'm using N66U with Merlin FW 246.19b. I input an IP address in "IP Address of Exposed Station" box but now I wanted to cancel the DMZ. According to ASUS FAQ, all I need to do is to clear the IP address in the "IP Address of Exposed Station" box and click "Apply". When I did that I'm greeted with this message "Fields cannot be blank". Anybody can help me? Thanks. Update: I found the solution here. Since I can't delete this post, I shall paste the solution here in case other users also encounter the same issue.