Gecko is the rendering engine used by Mozilla Corporation merchendise web browsers such as Seamonkey and Firefox. Many other browsers, such as Galeon, are basically a version of this Mozilla Corporation rendering engine beneath a different graphical user interface.
 Common configuration options
All (well, almost all) gecko based browsers allow you to type about:config in the navigation bar and then change all kinds of "secret" settings. These settings are common for all Gecko-based browsers, regardless of these options being available in the menu or not.
 Privacy / Proxy settings
These settings may be important if you use software like Tor:
- network.proxy.socks_remote_dns - Set this to true if you are using a remote proxy, it makes sure DNS lookups are always done remote (which avoids DNS-leakage).
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