Network Communications External to the Cluster#

The following details are all based on the default settings.  These can vary depending on the application setup and network design (such as NAT) of the solution, so may need adjustment accordingly.  Where a dependant is noted, this is fully dependant on the configuration with no default.

These communications are all related to communications with devices external to the cluster.

Outbound Communications to Devices from the Application/Unified Nodes#

Communication

Protocol

Port

Cisco Unified Communications Manager (UCM)

HTTPS

TCP 8443

Cisco Unity Connection (CUXN)

HTTPS

TCP 443

Webex

HTTPS

TCP 443

LDAP directory

LDAP

TCP/UDP 389 and/or 636(TLS/SSL)

Cisco HCM-F

HTTPS

TCP 8443

MS PowerShell Proxy Node

HTTP, HTTPS

TCP 5985, 5986

Outbound to External Systems from the Proxy Node#

Communication

Protocol

Network Protocol and Port

API Sync and Async responses

HTTPS

TCP 443

Northbound Notification messages

HTTPS

dependant

Microsoft 365/Online

HTTP

HTTPS

80

443

VOSS Cloud Licensing Service

HTTP

HTTPS

80

443

Outbound to External Systems from All Nodes#

Communication

Protocol

Port

SNMP

SNMP

TCP/UDP 162

SFTP as required for backup destinations

SFTP

TCP 22

NTP

NTP

UDP 123

Inbound Communications From External Systems to the Proxy Node#

Communication

Protocol

Port

Web Access

HTTPS

TCP 443

API Request

HTTPS

TCP 443

Inbound Communications to All Nodes#

Communication

Protocol

Port

SSH and SFTP for management and files transfers

SFTP/SSH

TCP/UDP 22