IEEE 802.11ai is a Wireless LAN standard from IEEE that since June 2017[1] provides fast initial link setup (FILS) methods that enable a wireless LAN client to achieve a secure link setup within 100ms, designed to improve dense environments.[1] FILS provides fast roaming without 802.11r.[2]

The Intel wireless daemon IWD in Linux added support for FILS in May 2019.[3]

A denial-of-service attack has been reported for 802.11ai.[4]


  1. ^ a b "IEEE Announces Significant Enhancements Available with Release of IEEE 802.11ai and IEEE 802.11 Wireless Standards". Retrieved 15 May 2018.
  2. ^ "Faster Connections | Veli-Pekka Ketonen | WLPC Phoenix 2018". February 28, 2018 – via YouTube.
  3. ^ "IWD 0.18 Wireless Daemon Brings Fast Initial Link Setup - Phoronix". Phoronix.
  4. ^ Lee, Sokjoon; Chung, Byung Ho (2015). "Denial of Service Attack against IEEE 802.11 WLAN Fast Initial Link Setup Technology" (PDF). International Journal of Computer Science and Electronics Engineering. 3 (4).[dead link]