Source note · Web proxies and TLS inspection that break UC clients
Proxy and TLS-inspection failures in cloud UC split into two layers: HTTPS sign-in and signaling, which goes through the proxy and breaks on untrusted inspection CAs, proxy authentication or header changes; and media, which normally bypasses the proxy over UDP but is pushed back through it when UDP and TCP are blocked.
inferred · Checked 2026-10-14
- Vendor
- not restricted
- Product
- not restricted
- Subsystem
- failure model
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-14
- Status
- inferred
- Checked
- 2026-10-14
Sources
- Port Reference Information for Webex Calling — Cisco Systems, Inc. (help.webex.com) · tier 2 current vendor documentation · Proxy support section, read together with Webex Network Requirements '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-signaling-vs-media-split. WarmTransfer. https://warmtransfer.net/knowledge/claims/tls-inspection-uc-clients-signaling-vs-media-split
BibTeX
@misc{warmtransfer-claim-tls-inspection-uc-clients-signaling-vs-media-split,
title = {Web proxies and TLS inspection that break UC clients: source note tls-inspection-uc-clients-signaling-vs-media-split},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/tls-inspection-uc-clients-signaling-vs-media-split},
note = {Source note tls-inspection-uc-clients-signaling-vs-media-split, checked 2026-10-14}
}