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Definition: rogue access point


(1) A wireless access point (AP) installed by an employee without consent of the IT department, which exposes the company's network to the outside world. It is a simple task to plug a Wi-Fi (802.11) access point into a router. For example, marketing might want wireless access for traveling sales reps who bring laptops. Rogue access points can be detected by performing a walking audit around the facility with sniffer software in a mobile device. See access point. See also rogue site.

(2) A wireless access point (AP) set up by an attacker outside a facility that already has a wireless network. Also called an "evil twin," the rogue AP picks up beacon signals from the legitimate AP and transmits identical beacons, which some computers inside the building associate with. Because passwords are generally used with the legitimate AP, this attack cannot typically compromise users' machines; however, it can slow down connections or cause users to lose connections. See beaconing.




Wireless Intrusion Detection
The BlueSecure RF sensor was designed to detect rogue access points and peer-to-peer (ad hoc) clients as soon as they appear on the network. The system scans for a variety of suspicious activities (see war driving). (Image courtesy of Bluesocket Inc.)