Source note · Session border controller selection and certification
Webex Calling does not require a Client Authentication EKU during the Local Gateway TLS handshake and accepts Server-Authentication-only certificates. Some third-party SBCs enforce strict EKU validation and may reject such certificates.
Checked 2026-10-14
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- Local Gateway TLS
- Deployment
- certificate-based-trunk
- Region
- not restricted
- Release range
- current as of 2026-10-14
- Checked
- 2026-10-14
Sources
- Get started with Local Gateway — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Certificate EKU note in the certificate-based trunk requirements
Cite this note
APA
WarmTransfer. (2026, October 14). Session border controller selection and certification: source note sbc-selection-wxc-eku-server-auth-only. WarmTransfer. https://warmtransfer.net/knowledge/claims/sbc-selection-wxc-eku-server-auth-only
BibTeX
@misc{warmtransfer-claim-sbc-selection-wxc-eku-server-auth-only,
title = {Session border controller selection and certification: source note sbc-selection-wxc-eku-server-auth-only},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sbc-selection-wxc-eku-server-auth-only},
note = {Source note sbc-selection-wxc-eku-server-auth-only, checked 2026-10-14}
}