rootninja

Links to files using “file:////” are disabled by default in just about every browser except Internet Explorer because it is an easily exploitable security vulnerability. Malicious sites could detect your operating system or installed applications by checking default installation paths, or worse, browse your cookies, sifting for sensitive data. As system vulnerabilities are discovered, files related to exploits could also be detected.

If you simply have to have the file Uniform Naming Convention (UNC) working in Firefox, there are a few ways to do it.

You can just enable it the mozilla intended way, which is what I would probably suggest.

user_pref(”browser.blink_allowed”, true);

Or there’s mozilla addons to make it more interactive.

The LocalLink addon from mozilla.org allows you to override security on a per-click basis, which is what I prefer.

The IETab addon from mozilla.org will open straight into explorer.exe which is what you probably want if you’re on a Windows XP, Vista, or Windows 7.