Source note · Web proxies and TLS inspection that break UC clients
Webex apps and Cisco Video devices prefer media transports in the order UDP, TCP, then TLS, and fall back to TLS if TCP ports are blocked.
Checked 2026-10-14
If TCP ports are blocked, Webex apps and Cisco Video devices will fall back to TLS.
- Vendor
- Cisco
- Product
- Webex App
- Subsystem
- media
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-14
- Checked
- 2026-10-14
Sources
- Network Requirements for Webex Services — Cisco Systems, Inc. (help.webex.com) · tier 2 current vendor documentation · Transport protocols and encryption ciphers
Cite this note
APA
WarmTransfer. (2026, October 14). Web proxies and TLS inspection that break UC clients: source note tls-inspection-uc-clients-webex-media-fallback-order. WarmTransfer. https://warmtransfer.net/knowledge/claims/tls-inspection-uc-clients-webex-media-fallback-order
BibTeX
@misc{warmtransfer-claim-tls-inspection-uc-clients-webex-media-fallback-order,
title = {Web proxies and TLS inspection that break UC clients: source note tls-inspection-uc-clients-webex-media-fallback-order},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/tls-inspection-uc-clients-webex-media-fallback-order},
note = {Source note tls-inspection-uc-clients-webex-media-fallback-order, checked 2026-10-14}
}