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Add a note about TLS-ALPN challenge.

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Ludovic Fernandez 2018-10-25 16:50:05 +02:00 committed by Traefiker Bot
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docs/configuration/acme.md
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@ -182,6 +182,10 @@ entryPoint = "https"
[acme.tlsChallenge] [acme.tlsChallenge]
``` ```
!!! note
If the `TLS-ALPN-01` challenge is used, `acme.entryPoint` has to be reachable by Let's Encrypt through port 443.
This is a Let's Encrypt limitation as described on the [community forum](https://community.letsencrypt.org/t/support-for-ports-other-than-80-and-443/3419/72).
#### `httpChallenge` #### `httpChallenge`
Use the `HTTP-01` challenge to generate and renew ACME certificates by provisioning a HTTP resource under a well-known URI. Use the `HTTP-01` challenge to generate and renew ACME certificates by provisioning a HTTP resource under a well-known URI.