this post was submitted on 06 Jul 2025

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478

Let’s Encrypt Begins Supporting IP Address Certificates (linuxiac.com)

submitted 1 week ago by KarnaSubarna@lemmy.ml to c/selfhosted@lemmy.world

62 comments fedilink hide all child comments

Who benefits from this? Even though Let’s Encrypt stresses that most site operators will do fine sticking with ordinary domain certificates, there are still scenarios where a numeric identifier is the only practical choice:

Infrastructure services such as DNS-over-HTTPS (DoH) – where clients may pin a literal IP address for performance or censorship-evasion reasons.
IoT and home-lab devices – think network-attached storage boxes, for example, living behind static WAN addresses.
Ephemeral cloud workloads – short-lived back-end servers that spin up with public IPs faster than DNS records can propagate.

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[–] squaresinger@lemmy.world -1 points 6 days ago (4 children)

Couldn't this prove very troublesome in combination with carrier grade nat?

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[–] comrade_twisty@feddit.org 120 points 1 week ago (8 children)

Can I get a cert for 127.0.0.1 ? /s

[–] unexposedhazard@discuss.tchncs.de 45 points 1 week ago (4 children)

The down votes are from people who work in IT support that have to deal with idiots that play with things they dont understand.

[–] kautau@lemmy.world 21 points 1 week ago (2 children)

It’s unfortunate they don’t know what /s means

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[–] possiblylinux127@lemmy.zip 9 points 1 week ago* (last edited 1 week ago) (3 children)

How do I setup a reverse proxy for pure TCP? /s

[–] Laser@feddit.org 15 points 1 week ago

Think that's called NATing

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[–] AliasVortex@lemmy.world 53 points 1 week ago (12 children)

That's kind of awesome! I have a bunch of home lab stuff, but have been putting off buying a domain (I was a broke college student when I started my lab and half the point was avoiding recurring costs- plus I already run the DNS, as far as the WAN is concerned, I have whatever domain I want). My loose plan was to stand up a certificate authority and push the root public key out with active directory, but being able to certify things against Let's Encrypt might make things significantly easier.

[–] qaz@lemmy.world 19 points 1 week ago (1 children)

FYI you can get a numeric xyz domain for 1$ a year

[–] Serinus@lemmy.world 3 points 1 week ago (2 children)

At least for the first year.

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[–] oasis@piefed.social 15 points 1 week ago (1 children)

Setting up a root and a immediate CA is significantly more fun though ;) It's also teaches you more about PKI which is a good skill to have.

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[–] thann@lemmy.dbzer0.com 15 points 1 week ago (1 children)

Its like self signed certs with the convience of a third party

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[–] SnotFlickerman@lemmy.blahaj.zone 3 points 1 week ago

Hell yuh.

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