Sorry for the blast of updates but have found something further. When I created the Hello test folder I made it read only and disabled the access restrictions (trying to prevent anything stopping access).
However by re-enabling the access restriction the webaccess has jumped to life and I can now see the folder over the internet!! (so external access problem fixed). That leaves the permissions problem as I still have to set Web Access to anonymous for this to work.
So current state of play is:-
- With External Port Set to 9000 and Shared Folders with Access Restrictions ENABLED but with Web Access set to Anonymous I can browse the folder (read only) over the internet.
- If I change Web Access Security to anything other than Anonymous it does not allow access and continually prompts me for login which doesnt work with any user account.