I'm trying to setup a media server (movies) for about 30 devices. Originally I was going to just do an FTP server on a new Linksys EA6350 but I've gone ahead, loaded OpenWRT, and begun learning it.
Of the two radios, I'd like the 2.4Ghz radio to not have internet access (all users) but it should have access to the external HDD plugged into the USB 3.0 port on the router.
I'd like the 5Ghz radio to have internet access and, ideally, access to the HDD on the USB port if possible, but the internet access is a must.
Essentially, the idea is that anyone that is given the password to the 2.4GHz radio is going to get access to the movies but won't be able to use the internet and kill the already very limited bandwidth. Only those that have been given the SSID and password to the hidden 5GHz radio get internet.
Can this be done? The devices on the 2.4Ghz band are constantly changing, so restricting access by MAC address would not be ideal.