SSE Fibre Broadband settings with own router?

Does anyone know what the recommend settings are for fibre broadband with SSE? Using my own modem/router box instead of the default and unsure what the config should be.

The problem could be my account password, not sure what this is .. the only thing I can find from SSE is card and it has a username/password for "Internet Security Suite" - I've no idea what this is, the username looks right [number]@ssebb.co.uk but not sure if it's the right password to use?

The username looks like the PPPoE username for SSE, so I guess the password may well be correct. Try checking your router logs for PPPoE authentication success/failure.