First make sure you have a good connection to the Web. Essentially this means that the modem has disconnected. Normally your computer will alert you to this, but sometimes it seems connected but is not communicating with the Web any more. To remedy the problem, hang up the modem and restart your session. Ping programs can also be found for Macintosh systems.
Ping is a utility that asks if a server is responding normally.
If you know the IP number of a Web server you can also ping that. An IP number is the numeric address used to identify a Web connected computer. It looks like this X.X.X.X where X is any number from 0 to 255. The Cyberwalker Web site IP address for example is 161.58.69.102. If a ping is successful it means two things.