Moved from 4.1.7.E to 4.7.2.L on a 3020 Concentrator and although I get the login page, accepting certificates etc., I can't login ... I can ssh to the dos style menu, vpn connections work fine, all is good except ... I can't login.
What might help is if I new what logs to send to syslog. I'm sending AUTH (amongst others) and can see myself login successfully via SSH, and can see SNMP connections ... BUT nothing - failed or attempted or anything via http / https.
This is the case even if I deliberately use incorrect login details.
This has been a nightmare but it seems fixed now. It is an HTTPS configuration element - thank you - but I had fiddled with pretty much everything including this before. I probably just had not done so in the correct combination. Also I was working on the CLI of a OS I had not worked with before (4.7.2 as opposed to 4.1.7)
For final closure of this conversation I below is the solution from a CLI point of view. Might want to paste it into an ascii editor with a wider page to enjoy what formatting there is.
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...