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Firekeeper – Firefox Intrusion Detection Extension

I simply love Firefox. The ability to tailor the browser operation through extensions makes it a winner. Mozdev is added another reason to consider Firefox.

From development site :

Firekeeper is an Intrusion Detection and Prevention System for Firefox. It is able to detect, block and warn the user about malicious sites. Firekeeper uses flexible rules similar to Snort ones to describe browser based attack attempts. Rules can also be used to effectively filter different kinds of unwanted content.
Other features of Firekeeper include:

  • Ability to scan incoming Firefox traffic – HTTP(S) response headers, body and URL and to cancel processing of suspicious responses.
  • HTTPS and compressed responses are scanned after decryption/decompression.
  • Very fast pattern matching algorithm (taken directly from Snort).
  • Interactive alerts that give an ability to choose a response to detected attack attempt.
  • Ability to use any number of files with rules and to automatically load files from remote locations.

Firekeeper is in alpha release  at this point but I have been using it for over a week on both Linux and Windows (diferent versions) without any difficulty. It has warned me about a GIF that was doing some directory scanning. It was an ad site linked from weather.com. Firekeeper gave me several options on the fly (allow always, allow once, block always, block once). Between Firekeeper and Noscript (on the fly Javascript security extension), Firefox has a great deal of tailorable security.

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