ACME Proxy Service ACMEv2 Adapter relying on true-Xtender Registration Authority Introduction true-xtender ACME Proxy Service ACMEv2 Adapter (RFC 8555) Features Supports ACMEv2 protocol http-01 and dns-01 challenge validation and External Account Binding (EAB) Integrated in Registration Authority Support multiple certificate profiles Validation is performed by the proxy server Use the same proxy to enroll certificates from different CAs Connectivity Scheme typical port usage ACME service access on 21443 (MUST if ACME Proxy hosted on RA Server) on 443 or any custom port HTTP validation on 80, 443 or any custom port