Re: authentication authorization acouting of the users for mail,
Yes why not....
Be it normal adminstrative user to log into router/switch or whetehr you have configured VPN on your router, every user will be authenticated, if required authorized using aaa commands and you can even account when they logged in and when they logged out, and other then VPN connections in major cases you ca n even accont for what they did, best example would be with TACACS+ for accounting commands ran by users on device after logging in.
For basic understanding, go through following link :
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...