V/Scan for Wireless LANs

From: Ian Chilvers (Ian.Chilversat_private)
Date: Fri Jul 18 2003 - 05:18:37 PDT

  • Next message: Morgan, Andy: "RE: V/Scan for Wireless LANs"

    Hi all
    
    We've been asked to perform a vulnerability assessment for a company that
    has a Wireless LAN.  The W/LAN is running WEP with a random key generated,
    rather than a dictionary word.
    
    Are there any tools out there that can brute force a WEP.
    
    Take this example.  A person parks the car in the car park and sniffs the
    air waves with a product like NetStumbler.  He discovers the W/LAN but with
    WEP.
    
    Is there a tool he can use to discover the WEP key (possible by brute force)
    
    If there isn't such a tool, how does this sound for an idea.
    
    Run a app that starts at binary 0's and counts upto 128bits of 1's
    For each sequence listen to see if there are any sensible packets or even
    send out a DHCP discover request to see if you get a reply.  This would then
    possibly give you the WEP key.
    
    Any comments
    
    Ian....
    
    
    
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