Network.IDN.whitelist.*From MozillaZine Knowledge Base
[edit] BackgroundIDN addresses have recently come under close scrutiny, mostly due to domain registrars failing to follow certain guidelines that help prevent a type of website spoofing attack. Mozilla’s first response to the threat of this type of spoofing was to disable IDN support and instead display the more verbose form of IDN URLs—punycode. (Punycode bears little resemblance to the intended appearance of an IDN, removing the risk of spoofing.) Later, it was decided that some IDN addresses would be shown as intended—but only if the domain’s registrar had a public anti-spoofing policy. These preferences keeps track of which top-level domains are displayed as intended. This is a set of enumerated preferences. This means that Mozilla will look for all preference names beginning with “network.IDN.whitelist.” and examine each one. The name of the preference—specifically, the portion at the end, after the full stop—is as important as the preference’s value. By default, the following preferences are set:
[edit] Possible values and their effects[edit] TrueIf an IDN has the top-level domain specified in this preference name, it will be shown as intended. [edit] FalseIf an IDN has the top-level domain specified in this preference name, it will be displayed in punycode. [edit] Caveats
[edit] First checked in[edit] Has an effect in
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