RSN (Robust Secure Network) is a protocol for establishing secure communications over an 802.11 wireless network.
RSN (Robust Secure Network) is part of the 802.11i standard.
The RSN protocol functions as follows:
RSN begins to establish a secure communication channel by broadcasting an RSN Information Element message across the wireless network.
The RSN Information Element (IE) broadcasts the following information:
The format of the RSN Information Element frame is:
|Field||Length in octets|
|Group key suite||4|
|Pairwise suite count||2|
|Pairwise suite list||4 per pairwise suite|
|Authentication suite count||2|
|Authentication suite list||4 per authentication suite|
The authentication and key management suites supported by RSN include:
|00:00:00:1||802.1X authentication and key management|
|00:00:00:2||No authentication; 802.1X key management|
The pairwise or group cipher suites supported by RSN include:
Wireless networks which employ RSN but allow the use of TKIP are sometimes referred to by the term Transition Security Network (TSN).
TSN is necessary because legacy wireless equipment does not have the necessary hardware to support the CCMP protocol.