A ping test is used to determine the connectivity and latency of Internet connected hosts. The online Ping Test uses the nping tool from the Nmap project.
Ping is a network troubleshooting tool that displays the response time between two Internet (or IP) addresses. Ping tools are installed by default in most operating systems. It does not matter if you are using Solaris, Windows, FreeBSD or Ubuntu Linux; ping is ubiquitous. A ping uses a type of packet known as ICMP, commonly known as ICMP request and ICMP reply.
Firewalls and routers can be configured to block ICMP request and response so you will sometimes find a system does not respond to ping even though the system is up and running. Network Firewalls, such as commercial Cisco and Checkpoint products can do this as can local firewalls such as your local Windows Firewall or a local Linux firewall using IP Tables.