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A new practice called warchalking could be shining a bright light on security holes in your wireless LAN. Find out about warchalking, what it's telling you, and how to close the door on uninvited network users.
Nokia calls it theft. Others call it a community service. Regardless, an underground movement called warchalking could be compromising your network security, as well as your company's bottom line.
What Is Warchalking? Warchalking is the practice of drawing symbols with chalk on the sides of buildings or sidewalks to indicate the presence of an accessible wireless network. Three basic symbols are used: two back-to-back semicircles (open node), a circle (closed node), and a circle around a 'W' (Wireless Encryption Protocol in use). Usually, a Service Set Identifier (SSID) is also noted, which acts as a password. (http://www.infotechadvisor.com/ solutions/security/warchalk.doc) Click here to see what these...