screened host firewall

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A firewall which is implemented using a firewall router and a proxy server, with the router acting as a front end to the server. The firewall router first screens off any accesses which are disallowed to a closed network, apart from Web page accesses and secure accesses to services such as email. The Web accesses are then passed to the proxy server which acts as a front end to the Web server that actually dispenses the Web pages. There are thus two layers of security that a cracker has to circumnavigate before accessing the Web server inside the closed network.

Subjects: Computing.

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