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2. Security > 16. Fine-Tune Ports and Sockets

Fine-Tune Ports and Sockets

You can configure Firefox network access down to the last detail if you want.

This hack explains how to chop off pieces of network access at the backend of the Firefox browser. This is done with preferences. Doing so provides strong protection against malicious web attacks, but it offers only weak security against user tampering. That’s because, in the normal case, users can undo network-access changes via the about:config system. There is a way to serve these preferences up more securely using a server [Hack #29] . You can also configure proxy arrangements [Hack #15] .

Disallow Ports

Firefox ports are allowed or disallowed using a multi-tiered system. In highest to lowest priority, these are the rules:


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