Overview of Firefox's about: config security and privacy preferences. Mozilla Firefox is without the shadow of a doubt the browser that you can customize the most.
This shows not only when it comes to (most) feature additions or changes, as there is usually a way to return to the old, but also when you dive into the depths of the about: config page. The page lists a lot of preferences that you can all modify.
Most are not accessible elsewhere in the browser, and you often find preferences listed here that Mozilla has implemented but not enabled yet for all users. While you find all kinds of preferences here, for instance options to change the color of link anchors, you will also find many security and privacy related preferences here. Making changes to those can improve security or privacy.
Internet Explorer Issues Delete Browsing History. If returning to a previously visited website (such as CTI Navigator Web) fails or new entries at a website do not function properly, the problem could be a corrupted file in.
The following list attempts to list all privacy and security preferences of relevance. With that said, it is a work in progress considering that there are that many preferences available. If you notice that a preference is missing, or discovered a new one, use the contact option here on this site to let us know about it and we will implement the change right away. How to use about: config. If you are new to Firefox's about: config page you may need some pointers on how to use the page.
Recent Posts. Remove.CRRRT extension virus: Steps To Uninstall.CRRRT extension virus Successfully; How To Uninstall Searchtodo.com virus: Effective Searchtodo.com virus Removal Guide; Delete Bcd.capablyoverfull.com pop-ups. NoScript - the safest Firefox experience NoScript CHANGELOG [+] new feature, [x] bug fix, [-] removed feature, [=] repackaging or cosmetic change. v 2.9.0.11 ===== x [XSS] Fixed. By default, Google Chrome blocks pop-ups from automatically showing up on your screen. When a pop-up is blocked, the address bar will be marked Pop-ups blocked. You can also decide to allow pop-ups. If you still get pop-ups. 2.4 Q: Where's my NoScript configuration stored? How can I backup or migrate it? How can I reset it? A: Your NoScript configuration, including permissions (whitelist/blacklist) and other settings, is stored together with all.
To open it do the following: Type about: config in Firefox's address bar and hit enter. Confirm you will be careful if the warning message is displayed. The search is your best friend. Just start typing a preference name and Firefox will automatically filter the list so that only matching results remain. You can change preference values with a double- click, and create new preferences with a right- click and the selection of new from the context menu. Note that there is no way to remove entries from the list from within Firefox. Pro Tip: All bold preferences are modified preferences.
The about: support page lists all of them. Sends data to servers when leaving pages.
True: Feature is enabled and web apps can make use of it (default). False: Disables the feature. Determines how often Firefox checks if a newer than cached version is available.
Mozilla Firefox is a free, fast and efficient cross-platform web browser and one of the most popular browsers in use. Firefox boasts speed and tabbed browsingIt features a built-in pop-up/ad blocker removing the annoyances.
- Overview of Firefox’s about:config security and privacy preferences. Mozilla Firefox is without the shadow of a doubt the browser that you can customize the most. This shows not only when it comes to (most) feature additions.
- Bug ID Summary; 819202: Attempting to open a new public window when a private window is focused opens a new private window: 778248: Figure out flashing mechanism for panda B2G builds: 532491 'Assertion failure: staticLevel.
The maximum space that Firefox uses for the disk cache. Don't use the disk cache. Kilobyte. browser.
Defines Firefox's use of the disk cache. True: Firefox uses disk cache. The capacity of the cache is set in the browser. False: Disk cache is not used. Defines whether contents of SSL (https) web pages get cached by Firefox on disk. True: Firefox will cache contents of https websites.
False: Firefox will not cache https website contents. The maximum size of a single entry in the memory cache in Kilobyte.- 1: no limit. Whether a memory cache is used by the browser. True: Firefox will make use of a memory cache. False: The browser's memory cache is disabled and thus not used. The capacity of the offline cache.
Needs browser. cache. Kilobyte. browser. Whether web applications and sites can use an offline cache on the local system. True: Web applications may use an offline cache (default)False: Offline cache functionality is disabled. On. EXEOpen (deprecated)This defines whether a warning message is displayed by Firefox when you click on an executable file in the download manager.
True: Displays the warning message. False: Does not display the warning. Defines when Firefox removes finished downloads from the Download Manager: 0: Immediately after the successful download. On browser exit. 2: Never (only manual). Default)browser. download. When. Done (deprecated)Whether Firefox will scan downloaded files with installed antivirus software. True: Firefox will scan files for viruses after the downloaded completes.
Windows Security Policy checks apply in this case as well. False: Files are not scanned. Defines whether Firefox's "fixup" feature is used. True: Will use fixup to automatically add prefix and suffix to single words you enter in the browser's address bar. False: Won't use it which means that Firefox will always redirect to search, even for single word entries. The prefix that Firefox adds to the word entered if Fixup is enabled. The suffix that Firefox adds to single words entered if Fixup is enabled.
If passwords entered in the address should be included in the "Fixit" operation as well. True: Won't include passwords. The entry http: //user: pass@example will be changed to http: //user@www. False: Will include entered passwords in the address.
The entry http: //user: pass@example will be changed to http: //user: pass@www. Defines whether Firefox will save text entered into web forms. True: Text that a user enters into forms and the browser's search bar will be saved. False: The data won't be saved. Defines if Firefox should remember visited pages.
True: The browser will remember pages you have visited. False: History will not be recorded. Defines if Firefox is started in private browsing mode on start. False: Firefox is started normally (default). True: Private Browsing mode is used automatically. Determines whether Firefox should check urls that are opened in it against a web forgery database (uses Google by default)True: Firefox will check urls and block them if they are forgeries. False: Firefox will not run those checks.
Whether Firefox will use malware information to determine if downloads are malicious. True: Will use a malware database to scan downloads. False: Won't download malware information or scan downloads. Defines the name of the (installed) search engine that is used for searches in Firefox (both address bar and search bar). Yahoo: The default value (may be different depending on your region). Defines whether search suggestions are displayed in Firefox.
True: Search suggestions are displayed (default). False: Search suggestions are disabled. Determines whether the Heartbeat feedback feature is enabled in Firefox. True: Feature is enabled and short feedback surveys may be displayed (default). False: Feature is disabled. Informs servers about links that get clicked on by the user. True: Feature is enabled.
False: Pings are not enabled. The number of previous pages that Firefox keeps saved for every open site in the browser (back and forward functionality). Defines the homepage of the browser. This defines how Firefox will start up.
Whether Firefox will display auto- complete suggestions when you type in the address bar. True: Firefox will use auto- complete.
False: Auto- complete won't be used. Defines whether scripts can close windows in the browser. True: Scripts may close any window. False: Scripts may only close windows opened by scripts.
Gives web applications access to the battery status of mobile devices. May be used in fingerprinting techniques. True: Allows web applications to retrieve the battery status (default). False: Disables the functionality. Determines whether Java.
Script is allowed to manipulate images displayed in the browser. True: Scripts are allowed to change images. False: Scripts are not allowed (default)dom. Defines whether Firefox's built- in popup blocker is enabled. True: The popup blocker is enabled. False: It is deactivated.
Several preferences that determine if and how scripts may manipulate browser windows. Determines whether websites are allowed to access clipboard contents (check out: Block websites from reading or modifying Clipboard contents in Firefox for additional information). True: Websites may read or modify clipboard events. False: Blocks access.
Determines whether websites are allowed to block access to the right- click context menu. True: Websites may manipulate the context menu.
False: Web pages won't be allowed to manipulate or block the context menu. This preference determines if plugins are run in a separate process. True: Plugins are run in their own process.
The exception are plugins listed by dom. False: Plugins are not run out- of- process with the exception of plugins listed by dom. Secs (deprecated)dom.
Secs. The time in seconds before out- of- process plugins are terminated if they are not responsive. Defines the time a script may run in the browser. Default values are 2. Defines the Java. Script events that are allowed to create popup windows.
The maximum number of popups that can be spawned in Firefox. This parameter defines whether "client- side session and persistent storage" capabilities are enabled in Firefox (meaning if the feature can be used by websites and applications to store data on the client computer). True: Client side storage is enabled. False: The feature is disabled. Firefox ships with a remote killswitch for extensions and plugins.
It is highly recommended to keep this at its default value as it was used in the past to block malicious extensions. True: The blocklist feature is enabled (default). False: Mozilla cannot turn off extensions or plugins remotely. Addons. cache. enabled. This sends a daily ping to Mozilla about installed add- ons and recent start- up times.
True: Sends the ping to Mozilla (default). False: Blocks it. This turns off add- on recommendations and won't update add- on metadata (the description) anymore). Defines whether extension updates are enabled in Firefox. True: Firefox checks for updates regularly (once per day by default as determined by extensions.
False: Firefox won't check for extension updates. Determines if location aware browsing is enabled. True: Location Aware browsing is enabled. False: The feature is disabled which means that you won't get prompts on websites using it. Defines whether geolocation requests are logged by Firefox. True: Firefox will log requests.
False: Requests won't be logged. The data provider used to power Firefox's geolocation feature.
Check out how to switch to a Mozilla operated service)https: //www. GOOGLE_API_KEY%media. This preference determines whether Web.
RTC is enabled in Firefox. Web. RTC is used for telephony and video chat functionality but leaks local and remote IP addresses as well. May also be used in browser fingerprinting. True: Web. RTC is enabled (default).
False: Web. RTC is disabled. Note: you need to set loop. False as well. media.