Knock Knock Server Free

You can easily check the server monitor.

You can easily check the server monitor.

If an error occurs on the server you're managing, you can easily see from the terminal Android.

Restriction:

- You're using your ISP or Telecommunications Carrier, because the port is not allowed to connect, you may be able to connect to arbitrary ports.

- That security software is installed on Android devices If you could not connect.

- The configuration changes that you are using your ISP or Telecommunications Carrier, you may be able to connect to the port.

Restriction of Free version:

The connecting server is to three.