Source note · Network readiness assessment for cloud calling
For Teams, Microsoft says the firewall must not change mapped NAT addresses or ports for UDP (session persistence).
Checked 2026-09-24
Make sure your firewall doesn't change the mapped Network Address Translation (NAT) addresses or ports for UDP.
- Vendor
- Microsoft
- Product
- Microsoft Teams
- Subsystem
- NAT
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Prepare your organization's network for Microsoft Teams — Microsoft (Microsoft Learn) · tier 2 current vendor documentation · section 'Network optimization', row 'Maintain session persistence'
Cite this note
APA
WarmTransfer. (2026, September 24). Network readiness assessment for cloud calling: source note network-readiness-assessment-teams-udp-nat-persist. WarmTransfer. https://warmtransfer.net/knowledge/claims/network-readiness-assessment-teams-udp-nat-persist
BibTeX
@misc{warmtransfer-claim-network-readiness-assessment-teams-udp-nat-persist,
title = {Network readiness assessment for cloud calling: source note network-readiness-assessment-teams-udp-nat-persist},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/network-readiness-assessment-teams-udp-nat-persist},
note = {Source note network-readiness-assessment-teams-udp-nat-persist, checked 2026-09-24}
}