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where can I change Firefox 4 default setting for proxy servers

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I am working on setting up firefox 4 in a multi user environment in linux. In FF 3.x releases, I could go to greprefs/all.js area and make the changes in the all.js file to chagne settings globally. But, I could not find any such file for firefox 4.x installation (for linux).

Would you please advise where can I go about editing global setting in Firefox 4?

thanks.

I am working on setting up firefox 4 in a multi user environment in linux. In FF 3.x releases, I could go to greprefs/all.js area and make the changes in the all.js file to chagne settings globally. But, I could not find any such file for firefox 4.x installation (for linux). Would you please advise where can I go about editing global setting in Firefox 4? thanks.

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Maybe it works if you create file and place a files with the prefs in the defaults/pref folder.


You can use a mozilla.cfg file to lock prefs or specify default values.
You can place a file local-settings.js in the defaults\pref folder to specify using mozilla.cfg.

You can use these functions in mozilla.cfg:

defaultPref();  // set new default value
pref(); // set pref, but allow changes
lockPref();  // lock pref, disallow changes

To prevent users from installing software use:

lockPref("xpinstall.enabled" ,false);

See: