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Guide: How to customize Firewalla DNS service

Support Team

July 01, 2022 18:57
Updated

Notes:

This is for Firewalla Gold/Purple only.
This is for Router Mode only.
This is a technical doc for Pros
This is not officially supported, will not guarantee working long term

1. Create any file under ~/.firewalla/config/dnsmasq_local/

Example:

$ cat ~/.firewalla/config/dnsmasq_local/example
address=/example.com/1.2.3.4

Option: the configuration will be applied globally. To override other upstream DNS server, use server-high instead of server

# Before
server=/mydnsserver.com/1.2.3.4
# After
server-high=/mydnsserve.com/1.2.3.4

2. Restart Firewalla DNS Service

sudo systemctl stop firerouter_dns
sudo systemctl start firerouter_dns

Reference:

https://wiki.archlinux.org/index.php/dnsmasq#Override_addresses

Comments

1 comment

Eric Flores

March 25, 2022 00:02

Edited
This is exactly what I needed to make my Nginx Proxy Manager configuration work. I need to map the external subdomains internally as aliases to existing devices (I'm not going assign the external domain as the search/local domain).

My only comment is that, be aware that you can repeat the line without having to modify the 'address' key. This is not clear, since the example has a single line. For example:
```
address=/host1.example.com/1.2.3.4
address=/host2.example.com/1.2.3.4
address=/host3.example.com/1.2.3.4
```
Be aware that you forward all hosts to a single host (NPM) and then it will take care of forwarding to the right host. This explains the repeated IP address above.

Right now I'm running NPM outside of my Firewalla (one change at a time). But this is essential service and I plan to move it as a docker instance later.
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