this post was submitted on 06 Mar 2025
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I self-host a couple of services, but I haven’t exposed anything outside my home network. I want to self-host my calendar, but not sure if I can do it without exposing it. Any recommendations on the best way to go about this? For those who do self-host a calendar service, how do you keep it secure?

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[–] Selfhoster1728@infosec.pub 3 points 7 hours ago (2 children)

mTLS with a reverse proxy!

[–] cmg@infosec.pub 3 points 6 hours ago (1 children)

What caldav clients supports that?

I’d recommend the Tailscale style approach. MTLS is a pain imo without infrastructure and especially on the app layers

[–] Selfhoster1728@infosec.pub 1 points 1 hour ago* (last edited 1 hour ago)

Tailscale is simpler but when you're accessing from devices behind VPNs like I do mTLS is a lifesaver.

I use DAVx⁵ for caldav (supports mTLS)

I find mTLS cool too :P

In terms of being a pain it's not that bad with nginx in my opinion. I can just build my own certificate for each service I expose or you use a common one, giving read only access to the key for my nginx containers and in two lines in the .conf it's sorted.

[–] ClownsInSpace2@lemm.ee 2 points 7 hours ago (1 children)

This is the first time I’ve heard of mTLS. Sounds interesting, any tutorial recs?

[–] Selfhoster1728@infosec.pub 1 points 1 hour ago

Not any in particular but mTLS is essentially just a reverse proxy (like nginx) asking a client for a certificate to be able to access the service behind it.

There are quite a few guides out there, so choose one for your reverse proxy of choice!