this post was submitted on 16 Feb 2024
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[โ€“] JATtho@sopuli.xyz 3 points 9 months ago (1 children)

It happened to me when I was configuring IP geoblocking: Only whitelist IP ranges are allowed. That was fetched from a trusted URL. If the DNS provider just happened to not be on that list, the whitelist would become empty, blocking all IPs. Literally 100% proof firewall; not even a ping gets a pass.

[โ€“] conti473@thelemmy.club 1 points 9 months ago* (last edited 9 months ago)

OPNsense has an anti-lock-out rule at the top for a reason ๐Ÿ˜