Configuring Firewalls for Use with UC Analog

Updated at April 9th, 2026

Table of Contents

Prerequisites

Prerequisites

UC Analog is an add on service. 

 

This port and IP information can be useful if you are using the WAN port of UC Analog and have a zero-trust network configuration with a firewall device upstream of the UC Analog endpoint.  The firewall may restrict outbound traffic on the inside, or "private side," of your network. The destination IP and ports below should be permitted to allow UC Analog-related traffic.

These port specifications are accurate for firmware 7.5.2.2 or later.

Destination IP Addresses, Ranges, or FQDNs Destination Port and Protocols Required
208.83.244.0/22, 162.253.220.0/22, 206.198.220.0/22 UDP 1194, 1294, 3480 and 10000 to 20000 (for SRTP), 53 (Optional but recommended), UDP 23456 for MPT; TCP 443, 8883. These ports are used for HTTPs requests, VPN establishment, NTP, SRTP, and DNS.
probe.oomasrv.com, sensor.probetarget.com, ipv4.connman.net TCP 80, 443. This is used for periodic connectivity testing for failover.
38.17.43.204 TCP/UDP 993, 8443, 9443; This is used for Syslog.
ntp1.ooma.com, ntp2.ooma.com, 0.ooma.pool.ntp.org, 1.ooma.pool.ntp.org, 2.ooma.pool.ntp.org, 3.ooma.pool.ntp.org UDP 123. This is used for NTP network time requests.
8.8.8.8 (Optional but recommended), 8.8.4.4 (Optional but recommended) UDP 53. This is used for DNS.

It is also recommended to keep ICMP requests from UC Analog open for ad hoc troubleshooting if needed.

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