Network.security.ports.banned

From MozillaZine Knowledge Base

The title given to this article is incorrect due to technical limitations. The correct title is network.security.ports.banned.

This article describes the preference network.security.ports.banned. To add, delete, or modify this preference, you will need to edit your configuration — do not edit this article.

1 Background
2 Possible values and their effects
3 Caveats
4 First checked in
5 Has an effect in
6 Related bugs
7 Related preferences
8 External links

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Background

Ports are used when any program accesses the Internet so that the system can keep separate applications' data separate. Some port numbers are reserved for functions such as e-mail or FTP. To prevent potential security risks if a protocol was allowed access a port reserved for a seperate protocol, Gecko applications contain a list of banned ports. This preference allows you to augment the list of banned ports.

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Possible values and their effects

A comma delimited list of port numbers to additionally block.

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Caveats

This preference does not exist by default.
Some protocols are allowed to override the banned ports.
Blocking a port requested by the application will result in the message "Access to the port number given has been disabled for security reasons." and the connection will fail.

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