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Ports used by the Sametime server

Question & Answer


Question

What ports need to be open for IBM Sametime to operate properly?

Answer

The port information is documented in the product documentation as follows:

Sametime 9.0: System and infrastructure requirements>Ports

Sametime 8.5: Ports used by the Sametime Community Server

Internal Use Only





Sametime 7.0:
You can use the Sametime Administration Tool to configure the ports on which the Sametime services listen for connections from Sametime clients.

The port settings for all Sametime services can be accessed from the Configuration-Connectivity-Networks and Ports options of the Sametime Administration Tool.


Ports used by the Sametime server
The tables below list the default ports used by all Sametime services, including:
HTTP Services, Domino Services, LDAP Services, and Sametime intraserver ports
Community Services ports
Meeting Services ports
Broadcast Services ports
Audio/Video Services ports

HTTP Services, Domino Services, LDAP Services, and Sametime intraserver ports

The following ports are used by the Sametime HTTP Services, Domino Application Services, and LDAP Services.

Default PortPurpose
Port 80If the administrator allows HTTP tunneling on port 80 during the Sametime installation, the Community Services multiplexer on the Sametime server listens for HTTP connections from Web browsers, Sametime Connect clients, Sametime Meeting Room clients, and Sametime Broadcast clients on port 80.

If the administrator does not allow HTTP tunneling on port 80 during the Sametime installation, the Domino HTTP server listens for HTTP connections on this port.

Alternate HTTP port (8088)If the administrator allows HTTP tunneling on port 80 during the Sametime installation (or afterward), the Domino HTTP server on which Sametime is installed must listen for HTTP connections on a port other than port 80. The Sametime installation changes the Domino HTTP port from port 80 to port 8088 if the administrator allows HTTP tunneling on port 80 during a Sametime server installation.

Note If the administrator allows HTTP tunneling on port 80 during the Sametime installation, Web browsers make HTTP connections to the Community Services multiplexer on port 80, and the Community Services multiplexer makes an intraserver connection to the Sametime HTTP server on port 8088 on behalf of the Web browser.

This configuration enables the Sametime server to support HTTP tunneling on port 80 by default following the server installation.

Port 389If you configure the Sametime server to connect to an LDAP server, the Sametime server connects to the LDAP server on this port.
Port 443The Domino HTTP server listens for HTTPS connections on this port by default.

This port is used only if you have set up the Domino HTTP server to use Secure Sockets Layer (SSL) for Web browser connections.

Port 1352The Domino server on which Sametime is installed listens for connections from Notes clients and Domino servers on this port.
Port 9092The Event Server port on the Sametime server is used for intraserver connections between Sametime components. This port cannot be used by other applications on the server.
Port 9094The Token Server port on the Sametime server is used for intraserver connections between Sametime components. This port cannot be used by other applications on the server.



Community Services ports

The following ports are used by the Sametime Community Services. Most of these ports are configurable.

Default PortPurpose
Port 1516The Community Services listen for direct TCP/IP connections from the Community Services of other Sametime servers on this port. If you have installed multiple Sametime servers, this port must be open for presence, chat, and other Community Services data to pass between the servers.

The communications that occur port 1516 also enable one Sametime server to start a meeting on another server (or "invite" the other server to the meeting).

Port 1533The Community Services listen for direct TCP/IP connections and HTTP-tunneled connections from the Community Services clients (such as Sametime Connect and Sametime Meeting Room clients) on this port.

Note The term "direct TCP/IP connection" means that the Sametime client uses a unique Sametime protocol over TCP/IP to establish a connection with the Community Services.

The Community Services also listen for HTTPS connections from the Community Services clients on this port by default. The Community Services clients attempt HTTPS connections when accessing the Sametime server through an HTTPS proxy server. If a Community Services client connects to the Sametime server using HTTPS, the data on this connection is not encrypted.

If the administrator does not allow HTTP tunneling on port 80 during the Sametime installation, the Community Services clients attempt HTTP-tunneled connections to the Community Services on port 1533 by default.

Port 80If the administrator allows HTTP tunneling on port 80 during the Sametime installation, the Community Services clients can make HTTP-tunneled connections to the Community Services multiplexer on port 80.

Note When HTTP tunneling on port 80 is allowed during the Sametime installation, the Community Services multiplexer listens for HTTP-tunneled connections on both port 80 and port 1533. The Community Services multiplexer simultaneously listens for direct TCP/IP connections on port 1533.

Port 8082When HTTP tunneling support is enabled, the Community Services clients can make HTTP-tunneled connections to the Community Services multiplexer on port 8082 by default. Community Services clients can make HTTP-tunneled connections on both ports 80 and 8082 by default.

Port 8082 ensures backward compatibility with previous Sametime releases. In previous releases, Sametime clients made HTTP-tunneled connections to the Community Services only on port 8082. If a Sametime Connect client from a previous Sametime release attempts an HTTP-tunneled connection to a Sametime 6.5.1 server, the client might attempt this connection on port 8082.


Meeting Services ports

The following default ports should be open for Sametime Meeting Services. These ports are configurable.

Default PortPurpose
Port 8081The Meeting Services listen for Sametime protocol over TCP/IP connections from the Sametime Meeting Room client on this port. The screen-sharing, whiteboard, send Web page, and question-and-answer polling components of the Sametime Meeting Room client exchange data with the server over this connection.

The Meeting Room client can make the TCP/IP connection directly to the Meeting Services or through a SOCKS proxy server.

The interactive audio and video components of the Sametime Meeting Room client also exchange call control information over a direct TCP/IP connection on this port.

Note The term "direct TCP/IP connection" means that the Sametime client uses a unique Sametime protocol operating over TCP/IP to establish a connection with the Meeting Services.

If the administrator does not allow HTTP tunneling on port 80 during the Sametime installation, the Meeting Services clients attempt HTTP-tunneled connections to the Meeting Services on port 8081 by default.

Port 80If the administrator allows HTTP tunneling on port 80 during the Sametime installation, the Meeting Room client can make HTTP-tunneled connections to the Community Services multiplexer on port 80.

When the Meeting Room client makes an HTTP-tunneled connection to the Community Services multiplexer, the Community Services multiplexer makes an intraserver connection to the Meeting Services on behalf of the Meeting Room client. The intraserver connection occurs on port 8081 by default.

The Meeting Room client attempts the Sametime protocol over TCP/IP connection (or "direct TCP/IP connection") on port 8081 before attempting an HTTP-tunneled connection on port 80.

Port 1503The Meeting Services listen for T.120 connections from the Meeting Services of other Sametime servers on this port. If you have installed multiple Sametime servers, this port must be open between the two servers for the servers to exchange screen-sharing, whiteboard, and other Meeting Services data.
Port 1516In a multiple Sametime server environment, a single Sametime meeting can be simultaneously active on multiple Sametime servers. This functionality is sometimes called "invited servers." Port 1516 must be open between two Sametime servers to enable one server to extend a meeting invitation to another server in support of the invited servers functionality.



Broadcast Services ports

The following default ports are used by the Sametime Broadcast Services. These ports are configurable.

Default PortPurpose
Port 554The Broadcast Services listen for Real-Time Streaming Protocol (RTSP) call-control connections over TCP/IP on this TCP/IP port. (RTSP uses TCP as the transport service.) The Broadcast client can make the RTSP TCP/IP connection directly to the Broadcast Services or through a SOCKS proxy server.

If the administrator does not allow HTTP tunneling on port 80 during the Sametime installation, the Broadcast Services clients attempt HTTP-tunneled connections to the Broadcast Services on port 554 by default.

Port 80If the administrator allows HTTP tunneling on port 80 during the Sametime installation, the Broadcast clients can make HTTP-tunneled connections to the Community Services multiplexer on port 80.

When the Broadcast client makes an HTTP-tunneled connection to the Community Services multiplexer, the Community Services multiplexer makes an intraserver connection to the Broadcast Gateway on behalf of the Broadcast client. The intraserver connection occurs on port 554 by default.

The Broadcast client attempts the RTSP TCP/IP connection on port 554 before attempting an HTTP-tunneled connection on port 80.

Dynamic UDP PortsThe Broadcast Services stream meeting data in RTP format from the server to the client over UDP ports. The specific UDP ports are chosen randomly by the Broadcast client and cannot be controlled by the administrator.

Note The Broadcast Services can also stream audio and video data to Sametime Broadcast clients. A meeting might include three separate streams (one each for audio, video, and screen-sharing/whiteboard data). If the client or server network, or any network between the Sametime server and the client, does not allow UDP traffic, the Sametime Broadcast Services will tunnel the streamed data over the initial RTSP TCP/IP control connection that occurs on port 554.

If the call-control connection was established using HTTP-tunneling on port 80, the client attempts to tunnel the UDP data through the HTTP-tunneled connection on port 80 or other port specified by the administrator.

Port 8083Broadcast Services use this port for internal control connections between Broadcast Services components. You should change this port only if another application on the Sametime server is using port 8083.
1 - 65535 (UDP ports for multicast)The Broadcast Services can take advantage of the bandwidth efficiency provided by multicast-enabled networks. If your network supports multicast, the Broadcast Services transmit multicast data over UDP ports within the 1 to 65535 range.

Note Multicast uses multicast IP addresses, not the IP address of the Sametime server.


Audio/Video Services ports

The following default ports are used by the Audio/Video Services. These ports are configurable. These ports are required for Client-to-Server connections. In a server-to-server situation for meetings (invited servers), then you need only port 1503 open between the servers.

Default PortPurpose
Port 8081The Sametime Meeting Room client establishes a TCP/IP connection with the Sametime server Meeting Services on this port. The Audio/Video Services and audio/video components of the Sametime Meeting Room client use this connection to the Meeting Services for call-control functions.
49252 - 65535
(Dynamic UDP port range)
The Sametime Audio/Video Services listen for inbound audio and video streams from Sametime Meeting Room clients on a range of UDP ports specified by the administrator. The UDP ports are selected by the Sametime Audio/Video Services dynamically from within the range of ports specified by the administrator.

The administrator can configure the range of available UDP ports from the MMP UDP port numbers start at/end at settings available from the Interactive Audio/Video Services "Networks and Ports" settings of the Sametime Administration Tool.

Port 8084If UDP is unavailable between a Sametime Meeting Room client and a Sametime server, Sametime uses this TCP port when attempting to tunnel the RTP audio and video streams using the TCP transport.
Port 9093The Interactive Audio/Video Services use this port for internal control connections between Interactive Audio/Video Services components. You should change this port only if another application on the Sametime server is using port 9093.

What ports are used by the Sametime server?

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Historical Number

192384

Document Information

Modified date:
16 June 2018

UID

swg21097949