User manual

Glossary 79

proxy server A server that sits between a client application, such as a web browser,

and a real server. The proxy server intercepts all requests to the real server to see if it

can fulfill the requests itself. If not, it forwards the request to the real server.

realm See WebDAV realm, Kerberos realm.

SSL Secure Sockets Layer. An Internet protocol that allows you to send encrypted,

authenticated information across the Internet. More recent versions of SSL are known

as TLS (Transport Level Security).

TCP Transmission Control Protocol. A method used along with the Internet Protocol

(IP) to send data in the form of message units between computers over the Internet.

IP takes care of handling the actual delivery of the data, and TCP takes care of keeping

track of the individual units of data (called packets) into which a message is divided for

efficient routing through the Internet.

Tomcat The official reference implementation for Java Servlet 2.2 and JavaServer Pages

1.1, two complementary technologies developed under the Java Community Process.

URL Uniform Resource Locator. The address of a computer, file, or resource that can be

accessed on a local network or the Internet. The URL is made up of the name of the

protocol needed to access the resource, a domain name that identifies a specific

computer on the Internet, and a hierarchical description of a file location on the

computer.

user name The long name for a user, sometimes referred to as the user’s “real” name.