Add build-in RADIUS Server with TOTP etc. support

[BGP4]

It is nice to have a RADIUS Server on the net.

but it is not nice for SMB. if you want to use this server for VPN Access, you cant update and restart your primary machine if this machine is the only RADIUS server (which is common), so the switch is normally not restartet and if, all network connections are dropped.

so it would be good if the switch includes a small radius server for TOTP VPN Auth where the VPN Access Concentrator can ask for XAUTH TOTP or sth else.

Also there should be a list of OTP who can be printed out like a PAPER TAN LIST. where you can print 1 A4/letter sheet and use it as one time authentifcation password. this is good for traveling etc if no TOTP application is there or smartphone is lost.

also this function could be used for WIFI Guest access.

also you should add tacacs, kerberos etc, too. but thats not that import.

maybe you can add some accounting stuff.