Source note · NAT traversal ICE STUN and TURN
Cisco's Network Requirements for Webex Services article dated 9 September 2026 states that the Webex app and Cisco Video devices use STUN (RFC 5389) for firewall traversal and media node reachability testing, citing a specification that RFC 8489 obsoleted in February 2020.
field report · Checked 2026-09-16
The Webex app and Cisco Video devices also use STUN (RFC 5389) for firewall traversal and media node reachability testing.
- Vendor
- Cisco
- Product
- Webex
- Subsystem
- NAT traversal
- Deployment
- not restricted
- Region
- not restricted
- Release range
- not restricted
- Status
- field report
- Checked
- 2026-09-16
Sources
- Network Requirements for Webex Services — Cisco Systems, Inc. (help.webex.com) · tier 2 current vendor documentation · Webex media flows paragraph, the STUN citation
Cite this note
APA
WarmTransfer. (2026, September 16). NAT traversal ICE STUN and TURN: source note natice-cisco-cites-the-obsoleted-stun-rfc. WarmTransfer. https://warmtransfer.net/knowledge/claims/natice-cisco-cites-the-obsoleted-stun-rfc
BibTeX
@misc{warmtransfer-claim-natice-cisco-cites-the-obsoleted-stun-rfc,
title = {NAT traversal ICE STUN and TURN: source note natice-cisco-cites-the-obsoleted-stun-rfc},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/natice-cisco-cites-the-obsoleted-stun-rfc},
note = {Source note natice-cisco-cites-the-obsoleted-stun-rfc, checked 2026-09-16}
}