Port monitoring is the key to monitoring your firewall to make sure that your firewall protects your internal services. Sometimes you may not even have a firewall for whatever reason, and you also don't expect to have any services running on your public IP. But, if there is even potential for a particular service to run on that IP, it is prudent to monitor that service using the port monitor.
You provide Exomonitor a list of all of the internal service ports that you want to be closed. We will confirm that those ports are not receiving connections.

Port monitoring can also be used for monitoring any service on any port with any protocol that is receiving connections. This is often handy when you are using a service that doesn't have a specific monitor available.

When you set up a machine there are often private and public services: it is important to monitor both of these. The port monitor can handle all this that with one monitor. To set up your port monitor, provide the host or IP of the service and the list of open and closed ports.
For example, a web server might have a port 80, 443 that should be open. And ports 22, 8080 that should be closed.

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