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Polycom CMA System Operations Guide
538 Polycom, Inc.
Outbound Ports Used by the Polycom CMA System
The following table lists all outbound ports that the CMA system uses to
communicate with other systems, including endpoints, bridges, database
servers, and other network equipment.
As a standard H.323 gatekeeper, the CMA system uses ports 1024-65535 for
dynamic TCP and UDP traffic.
TCP 4449 (Polycom proprietary service) OpenDS (Data store for site
topology) admin port
TCP 8989 (Polycom proprietary service) OpenDS (Data store for site
topology) replication port
Note
Third-party port-scanning software may incorrectly identify the Polycom proprietary
services as IANA-registered services, since identification is made by port number
only and not by the actual protocol being transmitted:
Port Description
Port Description
TCP 20
Used to FTP data to endpoints.
TCP 21
TCP/UDP 24 Used to access the telnet interfaces on endpoints.
TCP/UDP 25 Used to send E-mail messages to SMTP servers.
TCP/UDP 53 Used to access domain name servers (DNS).
TCP 80 Used to access the web application on endpoints and MGCs,
version 7.x and higher.
TCP 135
TCP 137
TCP 139
Active Directory (AD) Single Signon (NetBios/NTLM).
TCP/UDP 389 Used to access directory (LDAP) services
TCP 443 Secure access to endpoint devices (SSL) including Polycom
CMA Desktop.
TCP 445 AD Single Signon
TCP/UDP 636 Used to access LDAP over TLS/SSL (LDAPS)
TCP 1205 Used to access MGCs for management and monitoring