Difference between pages "Radio Frequency (RF) Jammers" and "Mozilla Firefox"

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== The Basics of Cell Phone Jamming ==
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Cell phones work by communicating with a service network through the utilization of cellular towers or base stations. Individual towers partition cities into small sections called cells. As a cell phone user traverses the cells in an area, the signal is passed from tower to tower.
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Mozilla Firefox is a Free and Open Source [[Web Browser|web browser]].
  
Jamming devices take advantage of this fact by transmitting on the spectrum of radio frequencies used by cellular devices. Through its concurrent transmission, the jamming device is able to disrupt the two-way communication between the phone and the base station. This form of a denial-of-service attack inhibits all cellular communication within range of the device.
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It can have many [http://addons.mozilla.org add-ons] which give it extra capabilities.
  
== How It's Done ==
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== Anonymous Browsing ==
Through the transmission of a high power signal on the same frequency of a cell phone, the jamming device creates a competing signal that collides with, and, in effect, cancels out the cellular signal. Cell phones, which are designed to increase power in the case of low levels of interference, react to this interference. Consequently, jamming devices must be aware of any increases in power by the cellular device and match that power level accordingly.
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Mozilla Firefox can be used in anonymous browsing (see [[The Onion Router]]). However, it is known that Firefox reveals computer's uptime in TLS (SSL) "Client Hello" packets allowing investigator correlate anonymous and non-anonymous traffic [http://archives.seul.org/or/talk/Apr-2008/msg00050.html].
  
As cellular telephones are full-duplex devices utilizing two separate frequencies (one for talking, one for listening where all parties to a call can talk at the same time as opposed to half-duplex walkie-talkies and CBs), any removal of one of these frequencies tricks the phone into thinking there is no cellular service. Consequently, the jammer need only block one of the frequencies.
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This bug affects Firefox 2 (all versions) and Firefox 3 (including Beta3).
  
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== See Also ==
  
The less complex jammers can only block a specific frequency group while the more complex jammers can block several different networks thus preventing dual- or tri-mode phones from switching to a different network with an open signal.
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* [[Mozilla Suite]]
  
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== External Links ==
  
 
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* [http://www.mozilla.com/firefox/ Official website]
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Revision as of 16:03, 23 May 2008

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Mozilla Firefox is a Free and Open Source web browser.

It can have many add-ons which give it extra capabilities.

Anonymous Browsing

Mozilla Firefox can be used in anonymous browsing (see The Onion Router). However, it is known that Firefox reveals computer's uptime in TLS (SSL) "Client Hello" packets allowing investigator correlate anonymous and non-anonymous traffic [1].

This bug affects Firefox 2 (all versions) and Firefox 3 (including Beta3).

See Also

External Links