I've been using UptimeRobot for years as a first level of notification that there might be an issue at the office. It's worked well for what it does and it's free. For security reasons I want to disable ICMP on our main outside interface. I know I can manually go in and add exceptions for specific IP addresses (I'm already doing this for 188.8.131.52 which is setup on a tracker for one of our routes), but how do I do it for a whole list without a lot of manual work? I'm sure this list gets updated too which creates another problem!