Source note · Firewall ports and IP ranges for cloud calling

Cisco states that Webex media flows in both directions using a symmetric inside-initiated 5-tuple stream outbound to the Webex cloud, where the 5-tuple is source IP address destination IP address source port destination port and protocol.

Checked 2026-09-16

Webex media flows in both directions using a symmetric inside-initiated, 5-tuple (Source IP address, Destination IP address, Source port, Destination port, protocol) stream outbound to the Webex Cloud.

Vendor: Cisco
Product: Webex
Subsystem: media
Deployment: not restricted
Region: not restricted
Release range: not restricted
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

Cite this note

APA

WarmTransfer. (2026, September 16). Firewall ports and IP ranges for cloud calling: source note fwports-media-is-inside-initiated-five-tuple. WarmTransfer. https://warmtransfer.net/knowledge/claims/fwports-media-is-inside-initiated-five-tuple

BibTeX

@misc{warmtransfer-claim-fwports-media-is-inside-initiated-five-tuple,
  title  = {Firewall ports and IP ranges for cloud calling: source note fwports-media-is-inside-initiated-five-tuple},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/fwports-media-is-inside-initiated-five-tuple},
  note   = {Source note fwports-media-is-inside-initiated-five-tuple, checked 2026-09-16}
}

Read in context