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Wireless security is the prevention of unauthorized access or damage to computers or data using wireless networks, which include Wi-Fi networks. The term may also refer to the protection of the wireless network itself from adversaries seeking to damage the confidentiality, integrity, or availability of the network.
A wireless intrusion detection system (WIDS) monitors the radio spectrum for the presence of unauthorized, rogue access points and the use of wireless attack tools. The system monitors the radio spectrum used by wireless LANs, and immediately alerts a systems administrator whenever a rogue access point is detected.
This makes it possible, without the need of a physical Wi-Fi router, to share the wired network access of one computer with wireless clients connected to that soft AP. If an employee sets up such a soft AP on their machine without coordinating with the IT department and shares the corporate network through it, then this soft AP becomes a rogue AP.
Charleston, South Carolina - free public wi-fi in Marion Square; Chattanooga, Tennessee - free public WiFi citywide; operated by EPB [97] [100] Chicago - free public WiFi in many public places; municipally operated; no technical support [101] Clearwater Beach, Florida - free service, [102] Cleveland, Ohio—free service in the Old Brooklyn ...
These include design flaws in the Wi-Fi standard, affecting most devices, and programming errors in Wi-Fi products, making almost all Wi-Fi products vulnerable. The vulnerabilities impact all Wi-Fi security protocols, including WPA3 and WEP. Exploiting these flaws is complex but programming errors in Wi-Fi products are easier to exploit.
Some wireless networking devices may not support the latest security mechanisms, and users must therefore leave their network unsecured. For example, the Nintendo DS and Nintendo DS Lite can only access wireless routers using the discredited WEP standard, however, the Nintendo DSi and Nintendo 3DS both support WPA encryption.
A final model is a provision of all layers of service, such as in Chaska, Minnesota, where the city has built and operated a Wi-Fi Internet network that provides email and web hosting applications. These different models involve different public-private partnership arrangements, and varying levels of opportunity for private sector competition.
Friendly-jamming schemes (DFJ and OFJ) are models that can decrease the eavesdropping risk by purposely interfering the network when an unknown user is near the area of the protected area. [ 1 ] [ 19 ] The models are tested by the probability of eavesdrop attacks in a testing environment, and are found that there is a lower probability of ...