Hi,
I don't think using an AAA server requires any licensing that any ASA wouldnt already have.
To my understanding to get the AAA working the ASA doesnt require that much configurations
Very basic configuration should be
aaa-server TACACS protocol tacacs+
aaa-server TACACS (interface) host x.x.x.x
key
aaa-server TACACS (interace) host y.y.y.y
key
aaa authentication telnet console TACACS LOCAL
aaa authentication ssh console TACACS LOCAL
aaa authentication http console TACACS LOCAL
aaa authentication serial console TACACS LOCAL
Where
- TACACS = name of the server-group
- tacacs+ = protocol
- interface = ASA interface behind which the AAA server is located
- x.x.x.x = AAA server IP
- y.y.y.y = AAA server IP (secondary if its exists)
- tacacs key = server secret
- aaa authentication telnet/ssh/http/serial = AAA configurations for all management connection types
- TACACS LOCAL = First option is to use the AAA servers and if they fail fall back to the LOCAL AAA information on the ASA itself
- Jouni