How does Traefik get its LetsEncrypt certificate from behind the firewall when LetsEncrypt can't see Traefik?
DNS registration.
You can get letsencrypt validation through a DNS token for validation. You can generally script that using the API provided by your DNS provider.
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DNS registration. You can get letsencrypt validation through a DNS token for validation. You can generally script that using the API provided by your DNS provider.
With Traefik it’s just setting up the config and any authentication. After that Traefik will manage the lifecycle of the cert.