User guide

Glossary 469
Wide Area Network (WAN)
Typically refers to a network that is distributed at multiple sites and connected by a relatively slow
link between the sites. The WAN is frequently implemented using a VPN on the Internet.
Web Application (Webapp)
Groups of server-side Web resources that make up an interactive online application. The web
resources include Java servlets, JavaServer Pages
™
(JSPs), static documents (such as HTML
documents), and applets that can be deployed in a DSView Client web browser. Web applications
must run in the context of a web application server such as the DSView Server.
Web Application Server (WAS)
Software that runs on a server that is capable of executing web applications. The WAS software
typically contains or works with a web (HTTP) server.
Web Server
A computer equipped with server software to respond to HTTP requests, such as requests from a
web browser. A web server uses the HTTP protocol to communicate with clients on a TCP/IP
network.
X.509
The most widely used standard for defining digital certificates. X.509 is an International
Telecommunications Union (ITU) Recommendation, which means that the standard has not yet
been officially defined or approved. As a result, companies have implemented the standard in
different ways. For example, both Netscape and Microsoft use X.509 certificates to implement SSL
in their Web servers and web browsers. An X.509 Certificate generated by Netscape may not be
readable by Microsoft products, and vice versa.