What's the best and easiest Captive Portals for OpenWrt?


I want to try out captive portals on my OpenWrt in home environment and I would like to some guidance please.

I want to run the captive portal solely off the router itself and not have to rely on any back-end servers, devices etc. My router is Linksys WRT1900ACS v2 which has the following specifications:-

  • 1.6 GHz dual-core processor
  • 128MB Flash; 512MB DDR3 RAM
  • x1 USB 2/eSATA
  • x1 USB 3 port

Essentially I want have an open AP so when guests connect they will be prompted and redirected to a login page where they enter a username and password to gain access to the internet. On the first visit they will be prompted to sign-up and then any future occurrences they just login with the username and password.

Additional features I would like:-

  • Instead of logging in with credentials (once initially signed-up) the user just enters a email of phone number and they receive a code they can enter to gain access
  • Be able to easily revoke users
  • Time limits - have to re-login to re-connect

Is any of this possible and how easy is it to setup if at all?

I have been looking at OpenNDS > https://opennds.readthedocs.io/en/v5.0.0/