If 7.x is anything like 6.x, attempted access from an unauthorized address will not even connect. If you're getting a connection but then immediately dropped prior to authentication, then "aaa" isn't configured:
aaa authentication ssh console LOCAL
For most people, that's sufficient. If you are using tacacs, or radius, then you have a little more work to do.
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...