ACME Certificate Management

ACME Certificate Management Connections

Expressway-E ACME Port Reference

Table 1. Ports required to implement ACME (Automated Certificate Management Environment) on Expressway-E

Purpose

Src. IP

Src. ports

Protocol

Dest. IP

Dst. Ports

Write challenge files

Any (ACME provider IP addresses not predictable)

1024-65535

TCP

Expressway-E public NIC

80

Request certificate signing

Expressway-E public NIC

Ephemeral

TLS

Any (ACME provider domain)

443