An IEEE standard security protocol for 802.11 wireless networks that was developed to replace the original WEP protocol. Also known as "Robust Security Network" (RSN), 802.11i provides sophisticated authentication using a variety of protocols (802.1X, EAP and RADIUS) and strong security with the AES-CCMP encryption protocol. However, in order to allow in-place upgrading of older WEP hardware, 802.11i also supports the TKIP protocol, which is less robust than AES-CCMP, but far superior to WEP (see WPA for more details).
Wi-Fi Certification
The Wi-Fi Alliance provides certification for 802.11i-compliant products with its Wi-Fi Protected Alliance (WPA) logo program. The WPA and WPA2 logos certify compliance with a subset of 802.11i or the full 802.11i protocol. See WPA.
Wi-Fi Certification
The Wi-Fi Alliance provides certification for 802.11i-compliant products with its Wi-Fi Protected Alliance (WPA) logo program. The WPA and WPA2 logos certify compliance with a subset of 802.11i or the full 802.11i protocol. See WPA.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2009 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- Why your Firewall, VPN, and IEE 802.11i Aren't Enough to Protect Your Network
- Like any network technology, wireless local area networks WLANs need to be protected from security threats. Though recent developments in IEEE standards have been designed to help ensure privacy for authenticated WLAN users, WLAN clients and enterprise infrastructure can still be vulnerable to a variety of threats that are unique...
- White papers 2008-11-01
- Why Your Firewall, VPN, and IEEE 802.11i Aren't Enough to Protect Your Network
- Like any network technology, Wireless Local Area Networks WLANs need to be protected from security threats. Though recent developments in IEEE standards have been designed to help ensure privacy for authenticated WLAN users, WLAN clients and enterprise infrastructure can still be vulnerable to a variety of threats that are unique...
- White papers 2008-11-01
- An Experimental Evaluation of DoS Attack and Its Impact on Throughput of IEEE 802.11 Wireless Networks
- Off late, Wireless LAN WLAN has gained popularity in a variety of locations. This has lead to development of high level security protocols for WLAN. The newest protocol IEEE 802.11i ratified to provide strong data encryption but it cannot prevent Denial of Service DoS attacks on WLAN. This paper in...
- White papers 2008-08-01
- Windows XP Service Pack 3 adds support for WPA2
- If you’re running Windows XP and haven’t yet installed Service Pack 3, Microsoft has included a few incentives that might interest networkers. First, XP Service Pack 3 provides support for Wi-Fi Protected Access 2 (WPA2), the most recent security standard derived from the...
- Blog posts 2008-05-14
- Don't assume WPA2 is more secure than WPA
- Don't assume WPA2 is more secure than WPAWhatever you do, don't use WEP!Just to re-iterate a point: Don't use WEP. It can be broken in about a minute, so it's basically as secure as having an open connection with no security.Verizon uses WEP as Default on there DSLEvery verizon wireless...
- Discussion threads 2008-01-24
- Don't assume WPA2 is more secure than WPA
- AirDefense recently did a Wireless LAN security survey of New York City retailers where they declared two thirds of retailers insecure according to John Cox's story. According to the AirDefense survey, a third used zero link layer wireless LAN security explanation of link layer here and a third used "weak...
- Blog posts 2008-01-24
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- One of the biggest problems with wireless LAN security standards is the lack of an intermediate solution. Your only choices in securing a wireless LAN were to deploy enterprise grade WPA wireless LAN security which requires RADIUS Remote Authentication Dial In User Service servers in addition to a PKI (Public...
- Blog posts 2008-01-04
- Wireless LAN Foundations
- View Available Dates and LocationsLearn how to design, secure, and support wireless networks through detailed course discussion and a broad range of hands-on configuration and testing exercises. Learn in-depth security principles and troubleshooting techniques. Gain a full understanding of how radio frequency affects networking so you can...
- Training 2008-01-01
- Unwiring the Enterprise: A Fresh Look at the Risks and Rewards of Abandoning Wired Access for Wi-Fi
- WLANs are no longer a novelty for tech savvy home users. In recent years, there have been major developments targeted at making WiFi applicable to the corporate world; most notably in the areas of security, speed, interoperability, and QoS. Due to recent IEEE standards such as 802.11i Wireless Security, 802.11e...
- White papers 2007-12-17
- Addressing Wireless Threats With Integrated Wireless IDS and IPS
- Wireless LAN security has improved dramatically since the introduction of IEEE 802.11 in 1997. When the most recent security standard, IEEE 802.11i, is employed, wireless networks are as secure- or more secure-as many wired network implementations. However, because of the ability of wireless LANs to penetrate beyond the physical boundaries...
- White papers 2007-12-01
- On Securing Wireless LAN Access to Government Information Systems
- The success of the IEEE 802.11 series of standards has led to a proliferation of affordable and interoperable wireless networking devices. Wireless functionality is an integrated feature of many laptops, personal digital assistants, and even mobile phones. With the ratification of the security enhancement to IEEE 802.11, referred to as...
- White papers 2007-06-25
- Why VPN can't replace Wi-Fi security
- Every time the subject of wireless LAN security comes up, people ask me about VPN as a solution for securing Wi-Fi (Wi-Fi is the common marketing name for 802.11 wireless LANs). Ive always told people that VPN security shouldnt be a substitute for good Wi-Fi security and I even...
- Blog posts 2007-05-12
- Establishing Wireless Robust Security Networks: A Guide to IEEE 802.11i
- A Wireless Local Area Network WLAN enables access to computing resources for devices that are not physically connected to a network. WLANs typically operate over a fairly limited range, such as an office building or building campus, and usually are implemented as extensions to existing wired local area networks to...
- White papers 2007-02-01
- Stop wireless network intrusion at the source: Implement access control for IEEE802.11 wireless LANs
- Establishing real security within your Wi-Fi LAN means more than just configuring your computer correctly or choosing good passwords. Take a whole new approach to wireless LAN security enabled by the recent development of new core technology for Wi-Fi. The new developments achieve what no amount of reconfiguration...
- Book chapters 2007-01-03
- Addressing Wireless Threats With Integrated Wireless IDS and IPS in the Cisco Unified Wireless Network
- This paper describes rogue access points and other wireless threats and how the Cisco Unified Wireless Network detects and prevents them. Wireless LAN security has improved dramatically since the introduction of IEEE 802.11 in 1997. When the most recent security standard, IEEE 802.11i, is employed, wireless networks are as secure...
- White papers 2006-07-01
- Wi-Fi goes top gun
- You'd be suprised where Wi-Fi is going these days. Like inside a fighter. Wi-Fi it is being used extensively in the military. One vendor, Telos, has installed Wi-Fi in 85 of the 108 Air Force bases, Government Computer News reports. “Primarily, it’s for maintenance and logistics operations, so we...
- Blog posts 2006-05-01
- Atheros AR5006X Wireless Network Adapter 4.1.2.133 (Windows)
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- Software downloads 2005-12-21
- Intel calls the Wi-Fi shots
- Intel calls the Wi-Fi shotsWhat would Intel pick: 802.11n or WiMAXThis is part of the question folks need to be asking. Both will not be successful.Intel has to much invested in the success of the new 802.16e Mobile Wireless WiMAX chips to allow the upstart 802.11 WiFi Alliance series...
- Discussion threads 2005-10-12
- Overview of the WPA Wireless Security Update in Windows XP
- This paper discusses the new Wi-Fi Protected Access WPA update in Microsoft Windows XP. The Institute of Electrical & Electronics Engineers IEEE 802.11i wireless networking standard specifies improvements to wireless Local Area Networking LAN security. The 802.11i standard is currently in draft form, with ratification due at the end of...
- White papers 2005-09-27
- WLAN Security - Why Your Firewall, VPN, and IEEE 802.11i Aren't Enough to Protect Your Network
- Wireless Local Area Networks based on the IEEE 802.11 standard (also called 'Wi-Fi', and referred to as 'WLAN' in this paper) have proliferated in enterprises, homes, and public places. IEEE 802.11 a, b, and g are now considered as a de facto standard for WLANs. Embedding of wireless technology into...
- White papers 2005-09-26
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