User authentication code for AWS Buckets / Static Site

Summary - I require some code that will authenticate a user by IP address/s or password, and allow the viewing of multiple HTML pages residing in AWS Buckets as static web pages. The pages are interlinked, so one page can be linked to many other pages from either the same or different AWS bucket. There are some (part) solutions based on the AWS bucket policies, which use JSON. A solution based on these policies could provide a temporary answer, however a more manageable and admin friendly solution is sought in the short term. This job is urgent so I would be looking for someone who can start straight away and deliver in a short timeframe. You must have an AWS account that you can develop the code on and demonstrate functionality. A User journey would be as follows; User visits website from IP [login to view URL] The IP is recognised as 'allowed' so the user can freely navigate a set of HTML static pages across several AWS buckets. User visits URL from IP [login to view URL] The IP is NOT recognised as 'allowed' so the user is redirected to an HTML page that asks for a password. The user enters a password. If the password is recognised, the user can freely navigate a set of HTML static web pages across several AWS buckets. If the password is NOT recognised as 'allowed' the user is redirected back an HTML page that again asks for a password. If the IP address and the password is not recognised, then the user will not be able to view the HTML pages. The user could access the content from an allowed IP address, and then move to a new IP address (example: move from work to home). When the user tries to navigate the pages, they will need to either be using a recognised IP address, or enter a recognised password to again access the HTML pages. ADMIN The administration of multiple IP addresses and passwords will be required, the manual editing of the code to achieve this would be an immediate solution, but a more non-tech user management solution will be required in the short term. PLEASE NOTE Experience with AWS and buckets/policies and static pages (HTML, CSS, and JS ONLY) is required. Many thanks.