Source note · Setting up FreePBX with a SIP trunk
New interfaces default to the Trusted zone. They should be moved on the Main page's Interfaces tab to the correct zone, usually Internet, and leaving any interface Trusted raises a critical Dashboard alert.
Checked 2026-09-25
Leaving any interface as a member of the Trusted zone is a misconfiguration, and FreePBX Dashboard will alert this as a critical system error.
- Vendor
- Sangoma
- Product
- FreePBX
- Subsystem
- Firewall module
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- PBX GUI - Firewall Getting Started Guide — Sangoma · tier 2 current vendor documentation · Interfaces tab paragraph
Cite this note
APA
WarmTransfer. (2026, September 25). Setting up FreePBX with a SIP trunk: source note freepbx-sip-trunk-setup-interface-zone-internet. WarmTransfer. https://warmtransfer.net/knowledge/claims/freepbx-sip-trunk-setup-interface-zone-internet
BibTeX
@misc{warmtransfer-claim-freepbx-sip-trunk-setup-interface-zone-internet,
title = {Setting up FreePBX with a SIP trunk: source note freepbx-sip-trunk-setup-interface-zone-internet},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/freepbx-sip-trunk-setup-interface-zone-internet},
note = {Source note freepbx-sip-trunk-setup-interface-zone-internet, checked 2026-09-25}
}