BANAGLORE, INDIA: Firekeeper is an add-on IDS/IPS for Mozilla Firefox browser, which detects, warns and blocks malicious websites. It scans all incoming traffic including URLs, headers, and body of a webpage to detect browser-based attacks. For compressed, encrypted or secure traffic (i.e. HTTPS), it scans after decompressing or decrypting it.

Firekeeper scans HTTP traffic and tries to look for patterns of browser based attacks against a set of rules. The rules for malwares and exploits are set by default, and you can also easily create custom rules for detecting threats as well.

They are based on the well-known IDS, Snort. Whenever a threat is detected, Firekeeper displays its full description like its URL, and online references related to it as an alert. Further, it also asks the user where to keep this URL, and what action to take on it.

Now, as you surf the Web and a website attacks your machine, this add-on will immediately display an alert and prompt you to take action. You can take any of the four actions: blacklist, white list, block once and allow once.