Firewall requirements for Zoom Phone Local Survivability

Publisher

Zoom Communications

URL

https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0058005

Published

unknown

Updated

unknown

Accessed

2026-10-01

HTTP status

200

License

Zoom proprietary; no-redistribution; short excerpts and locators only

Source notes citing this source

• The ZPLS firewall rules apply in addition to the standard Zoom Phone and Zoom Node firewall requirements. in context
• The ZPLS service uses TCP 9443 toward other ZPLS nodes and the Call Bridge for signalling, media and data synchronisation between nodes and node groups. in context
• Zoom clients and desk phones must reach the ZPLS service on TCP 5091 for registration and UDP 20000-64000 for media, and the ZPLS service sends media back on UDP 20000-64000. in context
• The ZPLS service and the customer SBC exchange SIP trunk signalling on TCP 5061 in both directions, and SBC media to ZPLS uses UDP 20000-64000. in context
• The ZPLS service needs outbound TCP 443 and 9669 to Zoom's IP ranges and TCP 5091 to Zoom Phone's IP ranges. in context

Cite this source record

APA

WarmTransfer. (2026, October 1). Firewall requirements for Zoom Phone Local Survivability. WarmTransfer. https://warmtransfer.net/knowledge/sources/zoom-kb0058005-zpls-firewall

BibTeX

@misc{warmtransfer-zoom-kb0058005-zpls-firewall,
  title  = {Firewall requirements for Zoom Phone Local Survivability},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/zoom-kb0058005-zpls-firewall},
  note   = {Zoom Communications, accessed 2026-10-01}
}