Source note · Setting up certificates on Cisco Expressway

The ACME service on Expressway-E signs and deploys server certificates automatically, and Let's Encrypt is the only CA it currently works with.

Checked 2026-09-30

We currently work with the Let's Encrypt authority to generate server certificates.

Vendor: Cisco
Product: Cisco Expressway
Subsystem: acme
Deployment: on-premises
Region: not restricted
Release range: X15.5
Checked: 2026-09-30

Sources

Cisco Expressway Certificate Creation and Use Deployment Guide (X15.5) - Using ACME on Expressway-E — Cisco Systems · tier 2 current vendor documentation · Using ACME on Expressway-E > introduction

Cite this note

APA

WarmTransfer. (2026, September 30). Setting up certificates on Cisco Expressway: source note expressway-certificate-setup-acme-letsencrypt-only. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-certificate-setup-acme-letsencrypt-only

BibTeX

@misc{warmtransfer-claim-expressway-certificate-setup-acme-letsencrypt-only,
  title  = {Setting up certificates on Cisco Expressway: source note expressway-certificate-setup-acme-letsencrypt-only},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/expressway-certificate-setup-acme-letsencrypt-only},
  note   = {Source note expressway-certificate-setup-acme-letsencrypt-only, checked 2026-09-30}
}

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