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Chapter 2 War Dialing > Sweeping for Live Modems

Sweeping for Live Modems

Once the attacker has performed some research and has gathered phone numbers, the real fun begins. Loading the phone numbers into a war dialing program and waiting to see the results is one of the most interesting and fruitful parts of the attack. While conducting war dialing attacks, the attacker may observe several different types of responses from the war dialing software, depending on what types of answers are received from the numbers dialed. Additionally, if large blocks or telephone numbers are scanned, it may take quite some time to complete dialing all the numbers, depending on how many modems and lines are used by the attacker. Most of the existing war dialing software provides support for performing war dialing attacks with mult....


  

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