Any specific technology involved in creating a Captive Portal Page?
I was planning to design a captive portal page by myself with a theme that looks similar to my website.
Is there a certain protocol I need to follow to create this page? or any html5 login page should work?
Well ... have a look at the page yourself.
Every browser can show you the 'source' code these days.
Use the example on the captive portal settings page as a guide line (the variables mentioned should be present).
Know that nginx is serving the page, so you can use more as html only - PHP, etc is also possible.
It can be as simple as you want, so long as it submits the correct HTML form parameters. It doesn't need to be anything fancy, though you have the option to use more advanced things like PHP if you want. You can upload assets like css or image files as well.
@jimp Thanks, this reply helped a lot