If you have problems with your Internet connection or just want to check it´s working correctly, you can do it in different ways, but the simplest is a dedicated program, like Flexiblesoft Ping.
Flexiblesoft Ping is a small tool that lets you do a test on the protocol of the Internet TCP/IP connection, and also lets you debug the problems it could have.
It works very simply. It sends an information packet called a Ping, and waits for a specific answer over a specific time duration, if the connection is working correctly. But in the case of no reply, it is because something is blocking that connection, or even the line itself. To check it, download Flexiblesoft Ping for free and wait for the results.