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How to whitelist trusted sites for Java plugin?

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  • Last reply by Keslaa

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I am deploying Firefox 30 to about 2500 machines. We have an internal site that requires the Java plugin and is extensively used throughout the organization. How can I (through Preferences or some other device) set the Java plugin to Always Activate for this one internal website?

I am deploying Firefox 30 to about 2500 machines. We have an internal site that requires the Java plugin and is extensively used throughout the organization. How can I (through Preferences or some other device) set the Java plugin to Always Activate for this one internal website?

Chosen solution

I didn't have time to figure out anything so granular. I ended up just setting the Java plugin to Always Activate by adding pref("plugin.state.java", 2); to our existing mozilla.cfg file

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I think these references will get you started, however I have not done this before:

http://kb.mozillazine.org/Locking_preferences

  You will need a mozilla.cfg and local-settings.js configured, I can copy them to all of the computers with a script, instead of having to install the GPO AddOn. Here's what my local-settings.js looks like:

pref("general.config.obscure_value", 0); pref("general.config.filename", "mozilla.cfg");

- pref, lockPref & defaultPref have different meanings: http://mike.kaply.com/2012/03/16/customizing-firefox-autoconfig-files...

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It is not possible to white-list a plugin for a specific domain via preferences. Via preferences you can only define the default behavior and that is best left to "Ask to Activate". Normally you white-list (allow) a plugin for a specific domain in "Tools > Page Info > Permissions" and this is one of the settings that is stored in the permissions.sqlite file as part of the "Site Preferences". So you would have to inject such a record in this file to allow Java automatically for this domain.


Note that you likely also have to white-list this site in the Java plugin and that can only be done via the Java control Center AFAIK.

If you visit a website regularly then a possible workaround is to add the URL to the Java Exceptions Site List, see:

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Thank you for the information, cor-el. I already have the site added to the Exception Sites list. (We did the Java dance last month.) Is there some documentation on how best to deploy such a setting as you describe into the permissions.sqlite file on a global basis? Should I configure a workstation and then port the settings file out to be deployed as part of the Firefox installation? We are already copying local-settings.js, mms.cfg and firefox.cfg files.

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Thank you for the reply, guigs2. I had already looked at those links for locking other settings we were working on and they were extremely helpful in that regard.

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Is this for existing profiles or for new installation that haven't used Firefox before?

You can initialize a profile by creating a browser\defaults\profile folder in the Firefox program folder (C:\Program Files\Mozilla Firefox\) and place files in it to have them copied to a newly created profile.

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This is for both new and existing users

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Chosen Solution

I didn't have time to figure out anything so granular. I ended up just setting the Java plugin to Always Activate by adding pref("plugin.state.java", 2); to our existing mozilla.cfg file