Source note · Web proxies and TLS inspection that break UC clients
The Zoom client requires firewall access over HTTP port 80 to certificate-validation URLs for CAs including DigiCert, GoDaddy, Sectigo and Entrust.
Checked 2026-10-14
The Zoom Client requires allowing the following URLs for certificate validation.
- Vendor
- Zoom
- Product
- Zoom Workplace
- Subsystem
- certificate validation
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-14
- Checked
- 2026-10-14
Sources
- Zoom network firewall or proxy server settings — Zoom Communications · tier 2 current vendor documentation · Firewall rules for certificate validation
Cite this note
APA
WarmTransfer. (2026, October 14). Web proxies and TLS inspection that break UC clients: source note tls-inspection-uc-clients-zoom-cert-validation-urls. WarmTransfer. https://warmtransfer.net/knowledge/claims/tls-inspection-uc-clients-zoom-cert-validation-urls
BibTeX
@misc{warmtransfer-claim-tls-inspection-uc-clients-zoom-cert-validation-urls,
title = {Web proxies and TLS inspection that break UC clients: source note tls-inspection-uc-clients-zoom-cert-validation-urls},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/tls-inspection-uc-clients-zoom-cert-validation-urls},
note = {Source note tls-inspection-uc-clients-zoom-cert-validation-urls, checked 2026-10-14}
}