r/ssl

2K archived posts · Jul 2013 – Aug 2026

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u/certkit•

I've been running into a bunch of teams that didn't understand this, so I wanted to share.

You don't need a PrivatePKI for your private infrastructure.

DNS-01 challenges prove domain control through a TXT record in your DNS zone. Your server can be on a private subnet, behind a firewall, completely unreachable from the internet. You still get a publicly trusted SSL certificate. One wildcard for *.int.example.com covers everything and keeps internal hostnames out of CT logs.

Worth knowing before you stand up a private CA.

https://www.certkit.io/blog/private-pki-internal-infrastructure

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