Controlling DHCP DNS for guest network

[mpsharp]

I'm running 386.13 on an AC5300 (yes I know, it's time to upgrade the hardware). I also run a PiHole container on my NAS and point all my DNS to that. I also have a guest network which I prefer to not have access to my home devices. Unfortunately, that means the guest network can't resolve any DNS since it can't reach the default DNS server on my private net. I'm pretty sure this wasn't a problem in 386.11. Is there a backdoor to set the DNS server for the guest network? Any other thoughts on how I could allow the guest network DNS access but nothing else?

 

[bennor]

Edit: Since it appears you are already using Asus-Merlin firmware, install the YazFi add-on. It will allow one to set the DNS servers for Guest Network clients. Downside however is YazFi doesn't work on AiMesh nodes if one is using AiMesh.

Home | Asuswrt-Merlin

www.asuswrt-merlin.net

YazFi - YazFi v4.x - continued

v4.4.4 Updated 2023-11-26 Feature expansion of guest WiFi networks on AsusWRT-Merlin, including, but not limited to: * Dedicated VPN WiFi networks * Separate subnets for organisation of devices * Restrict guests to only contact router for ICMP, DHCP, DNS, NTP and NetBIOS * Allow guest networks...

www.snbforums.com

GitHub - jackyaz/YazFi: Feature expansion of guest WiFi networks on AsusWRT-Merlin, including SSID -> VPN, separate subnets per guest network, pinhole access to LAN resources (e.g. DNS) and more!

Feature expansion of guest WiFi networks on AsusWRT-Merlin, including SSID -> VPN, separate subnets per guest network, pinhole access to LAN resources (e.g. DNS) and more! - jackyaz/YazFi

github.com

YazFi and other add-on scripts can be installed using AMTM included with Asus-Merlin firmware.

amtm - amtm 4.9 - the Asuswrt-Merlin Terminal Menu, June 30, 2024 (locked thread)

Welcome, this is amtm 4.9.1, the Asuswrt-Merlin Terminal Menu amtm is a front end that manages popular scripts for wireless routers running Asuswrt-Merlin firmware. Starting with Asuswrt-Merlin 384.15, amtm is included in the firmware. What's new in amtm 4.9.1 Adds support for amtm firmware...

www.snbforums.com

Ability to point Guest Network clients to my Pi-Hole server(s) were one of the prime reason I moved to using Asus-Merlin firmware + YazFi.

Example YazFi Asus-Merlin GUI screen from the YazFi GitHub page:

 

[mpsharp]

Well, once I got over the "run this curl script to install random software on your router" fear hurdle, this did the trick. Thanks!