During configuration of the access point and the RADIUS server, I am requested to specify a Shared Secret. What is it?
As the name suggests, a Shared Secret is an alphanumeric sequence shared only between the access point and the RADIUS authentication server. This secret is to guarantee the AP authenticity and the server which intervenes in client authentication: if the shared secret does not correspond, the messages of the 802.1x protocol are not exchanged and authentication immediately fails. Note that while a unique secret must be configured on the access point, one is configured for each access point IP address for the RADIUS server for which it authorises authentication. • The ZeroShell RADIUS server can also work in proxy mode. What does it mean exactly? In the wireless client supplicant that attempts authentication via 802.1x, the username can be inserted in username@domain format (e.g. pluto@EXAMPLE.COM). Based on the domain, the RADIUS server that receives the request decides if it has the authority to manage it or whether it must delegate another server to do it. In this case, the first RADIU
