Selfhosted

40219 readers

1294 users here now

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.

Rules:

Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.
No spam posting.
Posts have to be centered around self-hosting. There are other communities for discussing hardware or home computing. If it's not obvious why your post topic revolves around selfhosting, please include details to make it clear.
Don't duplicate the full text of your blog or github here. Just post the link for folks to click.
Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).
No trolling.

Resources:

selfh.st Newsletter and index of selfhosted software and apps
awesome-selfhosted software
awesome-sysadmin resources
Self-Hosted Podcast from Jupiter Broadcasting

Any issues on the community? Report it using the report flag.

Questions? DM the mods!

founded 1 year ago

MODERATORS

[email protected]

How to properly setup local certificate authorities for sub domains? (lemmy.world)

submitted 10 months ago by [email protected] to c/[email protected]

16 comments fedilink hide all child comments

Hello everyone,

A bit of background on how things are configured: I have many local services and am in the process of setting up two local domains, namely local1.publick.com and local2.publick.com. I own the domain name publick.com and manage it through Cloudflare.

Local1 is for the Windows domain and is using Active Directory, while local2 is for the Linux domain and is using RHEL IDM.

Now, as I am also exploring Single Sign-On (SSO) with Keycloak and a few other things, I would like to properly set up SSL for all these subdomains. Can I configure two local certificate authorities? One for local1.public.com and another for local2.publick.com? I would then use these to create certificates for service.local1.publick.com and service.local2.publick.com. Since the AD domain controller and RHEL IDM controller are authoritative for these two domains, can I still integrate two CAs with this setup?

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 1 points 10 months ago (1 children)

You can also use certbot on the subdomain servers if they are on the Internet, to auto-renew individual subdomain certificates. To run a "real" CA you need a lot of opsec and infrastructure regardless of what software you use. For basic dev-level purposes, CA.pl works and has been around forever, though I'm sure there is better stuff out there.

Re perl, see also: https://xkcd.com/224/ :)

[–] [email protected] 1 points 10 months ago* (last edited 10 months ago)

You can also use certbot on the subdomain servers if they are on the Internet, to auto-renew individual subdomain certificates. To run a “real” CA you need a lot of opsec and infrastructure regardless of what software you use

Yes, I agree with you and I always tell everyone to stay away from creating a CA. - it's just not worth it the workload and the risks. Either way certbot can be even used without exposing local servers to the internet with DNS challenges and other means of authentication. The wildcard has the advantage of not having to publish those subdomains publicly in some for (DNS) or another (crt.sh).

For basic dev-level purposes, CA.pl works and has been around forever, though I’m sure there is better stuff out there.

https://github.com/FiloSottile/mkcert is the way to go for that.