Hosting a LAN Hotspot Without Connection to the Internet

[MaskedMatters]

Hello,

I recently came across RaspAP while working on setting up an on-the-go server to host all my applications. I wanted a solution that could broadcast a hotspot and allow full configuration through a user-friendly interface like the RaspAP web GUI.

I’ve successfully installed RaspAP using my wlan0 WiFi interface, which is currently connected to my home network. However, after rebooting, I was expecting to connect to the access point and be able to navigate to the GUI but it was still connected to my home network. The hotspot doesn’t appear in my network list, likely because the interface is already connected to the home network (which I don't want).

What I want to achieve is an isolated LAN setup (essentially a router with no WAN), so that only devices connected to the hotspot can communicate with each other. From my understanding, this should be possible with just one network interface.

If anyone can provide guidance on how to configure this, I’d greatly appreciate it!

[billz]

this should be possible with just one network interface

It's possible but not recommended (or supported) https://docs.raspap.com/ap-sta/
A better alternative is to use a second adapter with in-kernel drivers and follow the Wi-Fi repeater steps.

[MaskedMatters]

Oh okay, I thought it had to be supported because more people would like to do this but I guess not. I was looking at the Wi-Fi repeater steps though, what would happen if I moved my Pi to an area where my home network was out of range and it can't connect?

Also, what mode would my Pi be running right now if it's not sharing a hotspot and is just connected to my home network? I followed the quick start guide to install it.

[billz]

Is your goal a WLAN only without internet connectivity? If so, yes RaspAP supports this. Disconnect your device from your home network and start the AP. Connect clients to it, done.

[MaskedMatters]

Yes, that's what I wanted, thank you. I'll try this when I get back home to my Pi. Thank you!