Hi, I'm wondering to use iptables to forward all my DNS traffic to my AdguardHome docker EXCEPT one VLAN gateway.
e.g.
192.168.1.0/24 ( VLAN 1 ) forward to 192.168.1.123:53 ( Adguardhome IP )
192.168.2.0/24 ( VLAN 2 ) - to keep using 9.9.9.9, no forwarding rule
192.168.3.0/24 ( VLAN 3 ) forward to 192.168.1.123:53 ( Adguardhome IP )
So, I put the following on the firewall custom rules at first in order to forward all interfaces to my Adguardhome.
Edit - acutally thinking about it. It would just be easier to pass 9.9.9.9 dns directly to your vlan 2 group and pass your filtered DNS to the other two. Just change the DHCP settings for each group.
mercygroundabyss, thanks for your advice and I will try. By the way, I know the AGH is able being installed directly on my router but the size of /tmp/ will become bigger. I am afraid to pay lots of efforts for maintenance.
As long as you have space it should be ok. I'm guessing you using the opkg version that keeps its data in /tmp? That means you will flush on reboot.
On a full install to the /opt folder you really require about 100mb of space.
35mb for the AGH binary and again for when it backups and upgrades. (that's in the agh-backup folder)
My Filters take 20mb for me. (Again you can raise or lower this depending on what lists you use)
However you will need to tweak your logging.
I am keeping
90 days of statistics (2mb file at present)
7 days of query logs (last 7 days was 53mb)
You can turn these off or down as required. I've included my listings of the folders to give an overview.
root@OpenWrt:/opt/AdGuardHome# ll -h
drwxrwxrwx 4 root root 3.4K May 13 20:50 ./
drwxr-xr-x 7 root root 4.0K May 12 22:15 ../
-rwxr-xr-x 1 root root 34.0M May 13 20:50 AdGuardHome*
-rw-rw-rw- 1 root root 331 May 13 20:50 AdGuardHome.sig
-rw-r--r-- 1 root root 6.5K May 13 20:50 AdGuardHome.yaml
-rw-r--r-- 1 root root 41.2K May 13 20:50 CHANGELOG.md
-rw-r--r-- 1 root root 34.3K May 13 20:50 LICENSE.txt
-rw-r--r-- 1 root root 22.7K May 13 20:50 README.md
drwxr-xr-x 2 root root 3.4K May 13 20:50 agh-backup/
drwxr-xr-x 3 root root 3.4K May 19 23:21 data/
root@OpenWrt:/opt/AdGuardHome/data# ll -h
drwxr-xr-x 3 root root 3.4K May 19 23:21 ./
drwxrwxrwx 4 root root 3.4K May 13 20:50 ../
drwxr-xr-x 2 root root 3.4K May 20 18:51 filters/
-rw-r--r-- 1 root root 10.9M May 21 18:02 querylog.json
-rw-r--r-- 1 root root 52.9M May 19 21:32 querylog.json.1
-rw-r--r-- 1 root root 32.0K May 18 21:09 sessions.db
-rw-r--r-- 1 root root 2.0M May 21 18:00 stats.db
root@OpenWrt:/opt/AdGuardHome/data/filters# ll -h
drwxr-xr-x 2 root root 3.4K May 20 18:51 ./
drwxr-xr-x 3 root root 3.4K May 19 23:21 ../
-rw-r--r-- 1 root root 865.8K May 20 18:50 1.txt
-rw-r--r-- 1 root root 10.4K May 20 18:50 1625359387.txt
-rw-r--r-- 1 root root 7.9K May 20 18:50 1625359388.txt
-rw-r--r-- 1 root root 3.5M May 20 18:50 1625359390.txt
-rw-r--r-- 1 root root 5.9K May 20 18:50 1625359391.txt
-rw-r--r-- 1 root root 3.6K May 20 18:51 1625359392.txt
-rw-r--r-- 1 root root 266.1K May 20 18:50 1625359393.txt
-rw-r--r-- 1 root root 13.3M May 20 18:50 1633201708.txt
-rw-r--r-- 1 root root 1.3M May 20 18:50 1635888815.txt
-rw-r--r-- 1 root root 18.1K May 20 18:50 1639602953.txt
-rw-r--r-- 1 root root 359.9K May 20 18:50 1639602955.txt
-rw-r--r-- 1 root root 83.8K May 20 18:51 1639602956.txt