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Microsoft® Windows® XP Features 259
The firewall is configured using the Properties dialog box associated with
each Internet connection in the Control Panel. The firewall can be enabled
or disabled. Additional configuration options are available for more
advanced users. These advanced options include the ability to open or close
specific Transmission Control Protocol (TCP) or User Datagram Protocol
(UDP) ports or to enable port redirection. Port redirection allows access
requests to a specific port on the firewall (such as port 80, the Web server
port) to be automatically redirected to another computer on the local
network. This capability allows a Web server on a home network to be
protected by an edge firewall.