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OPNsense Forum

English Forums => 25.1, 25.4 Series => Topic started by: engels0n on July 09, 2025, 02:01:50 PM

Title: DNS Spam from OPNSense Firewall
Post by: engels0n on July 09, 2025, 02:01:50 PM
Hi everyone,

I just looked into my AdGuard DNS and found some strange entries.
My OPNSense firewall has a LOT of queries to my DNS server ...

Can anyone explain why this happens or where I have to look into to get rid of them?

2025-07-09 13_59_44-AdGuard Home – Mozilla Firefox.png
2025-07-09 14_00_07-AdGuard Home – Mozilla Firefox.png

Thanks in advance.
Title: Re: DNS Spam from OPNSense Firewall
Post by: bamf on July 09, 2025, 02:08:02 PM
Do you have a firmware update check cronjob? Disable it.
Title: Re: DNS Spam from OPNSense Firewall
Post by: engels0n on July 09, 2025, 03:07:00 PM
As far as i can see there is none under system -> settings -> cron.
Title: Re: DNS Spam from OPNSense Firewall
Post by: Fabian Wenk on July 21, 2025, 12:10:02 PM
I do remember that it was possible to directly show in the Dashboard (in System Information) the status if there are updates available or not. I do remember that it was possible to disable this somewhere in the settings (what I did), but I am currently unable to find it again. My Systems all only show "Click to view pending updates." there.

At least something like this could explain that this lookups do happen, e.g. when someone may have the Dashboard open all day long.
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