This paper describes a method of monitoring servers or server rooms by an Internet of Things (IoT) system that can configure and control terminal sensors behind a network address translation (NAT) router through a Wiki page on the Internet. This IoT system consists of Wiki pages and a bot (Wiki Bot) that runs on Raspberry Pi with sensors. A Wiki Bot can be placed behind the NAT router to resist various online attacks. The IoT system can monitor servers behind a NAT router over the Internet. A Wiki Bot is controlled by sending commands from the Wiki page. It acquires data from its sensors and processes the data via a command sequence of commands. The sensors settings and the data sampling rate can be remotely changed by changing the commands on the Wiki page.