For the Internet and the WWW to work successfully, computers around the world have to be able to communicate with one another with ease. Not only for the Internet, but also for the seamless functioning of telephone and other communications systems, computer networks must work flawlessly and reliably without interruption. Networking software and hardware keep the channels of communication among computers around the world working the way they are expected. Perl has built-in facilities for developing and maintaining networking software. Since programs can be developed easily and quickly in Perl, a large amount of networking software is being written in Perl.