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+--- Thread: redirect to https on mobile app (/t-redirect-to-https-on-mobile-app)
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RE: redirect to https on mobile app - robertkwild - 2025-03-25
wow ok thanks, as normally if you install letsencrypt on a linux box you need both port 80 and 443 open, port 80 is for the renewal, so for caddy this is nto the case?
RE: redirect to https on mobile app - TheDreadPirate - 2025-03-25
Indeed. Let's Encrypt's cert bot, which you'd need when using Nginx and Apache, requires port 80. Unless you are using DNS challenge.
AFAIK, Caddy is the only HTTP server that supports TLS-ALPN challenges. Let's Encrypt even calls out Nginx and Apache for not supporting it yet. Even though it has been around for a while.
https://letsencrypt.org/docs/challenge-types/#tls-alpn-01
Almost 7 years since the initial proposal and 5 years since it was ratified.
https://datatracker.ietf.org/doc/html/draft-ietf-acme-tls-alpn-01
https://datatracker.ietf.org/doc/rfc8737/
RE: redirect to https on mobile app - robertkwild - 2025-03-25
nice, thanks for your help