Selfhosted
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
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I recently moved my internal network to a public domain. [random letters].top was $1.60 at porkbun, and now I can do DNSSEC and letsencrypt. I added a pre-hook to LE's renew that briefly opens the firewall for their challenges, but now I'm going to have to look at the DNS challenge.
Almost everything I do references just hostname, with dns-search supplied by dhcp, so there was surprisingly little configuration to change when I switched domains.
In order to automate the DNS challenge the LE bot needs the DNS server to have an API and needs an API access token. See if your DNS service is among the ones supported.
How are you dealing with mDNS and your custom domain? Isn't it causing... issues and mismatches?
Haven't noticed any issues, but I'm not intentionally using mDNS. dhcpd tells all the clients where the nameserver is and issues ddns updates to bind, so I haven't needed any of the zero-config stuff. I did disable avahi on a linux server, but that was more because it was too chatty than caused any actual problems. I wouldn't think there would be any more issues between mDNS and a fake domain than between mDNS and a real, big-boy domain on the same network.
“Big boy domains” on a network aren’t very easy to deal with. For instance sometimes you’ve devices in your network running DNS queries for your devices and they end up leaking to the outside because well… they’re FQDN… I also have experience mDNS issues due to some reason it seems to slow down a lot once you’re not using .local as your domain as well.