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What Is an Intrusion-Detection System (IDS)?
An intrusion-detection system (IDS) can be defined as the tools, methods, and resources to help identify, assess, and
report unauthorized or unapproved network activity. The intrusion detection part of the name is a bit of a misnomer, as
an IDS does not actually detect intrusions—it detects activity in traffic that may or may not be an intrusion. Intrusion
detection is typically one part of an overall protection system that is installed around a system or device—it is not a
stand-alone protection measure.
WEP and WPA Attack
Wired Equivalent Privacy (WEP) is a deprecated algorithm to secure IEEE 802.11 wireless networks. Wireless networks broadcast messages using radio, so are more susceptible to eavesdropping than wired networks. When introduced in 1999, WEP was intended to provide confidentiality comparable to that of a traditional wired network.
Wi-Fi Protected Access (WPA and WPA2) is a class of systems to secure wireless (Wi-Fi) computer networks. It was created in response to several serious weaknesses researchers had found in the previous system, Wired Equivalent Privacy (WEP). WPA implements the majority of the IEEE 802.11i standard, and was intended as an intermediate measure to take the place of WEP while 802.11i was prepared. WPA is specifically designed to also work with pre-WPA wireless network interface cards (through firmware upgrades), but not necessarily with first generation wireless access points. WPA2 implements the full standard, but will not work with some older network cards.
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