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18 Validation plugins
Wouter Tinus edited this page 2019-05-30 13:09:27 +02:00

A validation plugin is responsible for providing the ACME server with proof that you own the identifiers (host names) that you want to create a certificate for. The ACME v2 protocol has different challenge types, two whom are supported by Let's Encrypt and WACS, namely HTTP-01 and DNS-01.

For wildcard identifiers, only DNS validation is possible at the moment.

Other challenge types are not supported for various reasons:

  • TLS-ALPN-01: under investigation (see #990)
  • TLS-SNI-01/-02 validation: deprecated and all but removed
  • PROOFOFPOSSESSION-01 validation: unknown