Network ports for Microsoft Dynamics CRM

[Applies to: Microsoft Dynamics CRM 4.0]

This section describes the ports that are used for Microsoft Dynamics CRM. This information is useful and helpful as you configure the network when users connect through a firewall.

Network ports for the Microsoft Dynamics CRM Web application

The following table lists the ports used for a server that is running a full-server installation of Microsoft Dynamics CRM. Moreover, except for the Microsoft SQL Server role, and the Microsoft Dynamics CRM Connector for SQL Server Reporting Services server role, all server roles are installed on the same computer.

Protocol

Port

Description

Explanation

TCP

80

HTTP

Default Web application port. This port may be different as it can be changed during Microsoft Dynamics CRM Setup. For new Web sites, the default port number is 5555.

TCP

135

MSRPC

RPC endpoint resolution.

TCP

139

NETBIOS-SSN

NETBIOS session service.

TCP

443

HTTPS

Default secure HTTP port. The port number may differ from the default port. This secure network transport must be manually configured. Although this port is not required to run Microsoft Dynamics CRM, we strongly recommend it. For information about how to configure HTTPS for Microsoft Dynamics CRM, see MakeMicrosoft Dynamics CRM 4.0client-to-server network communications more secure.

TCP

445

Microsoft-DS

Active Directory service required for Active Directory access and authentication.

UDP

123

NTP

Network Time Protocol.

UDP

137

NETBIOS-NS

NETBIOS name service.

UDP

138

NETBIOS-dgm

NETBIOS datagram service.

UDP

445

Microsoft-DS

Active Directory service required for Active Directory access and authentication.

UDP

1025

Blackjack

DCOM, used as an RPC listener

Network ports that are used by the SQL Server that runs the Microsoft Dynamics CRM Connector for SQL Server Reporting Services server roles

The following table lists the ports that are used for a computer that is running SQL Server and has only SQL Server and the Microsoft Dynamics CRM Connector for SQL Server Reporting Services server roles installed.

Protocol

Port

Description

Explanation

TCP

135

MSRPC

RPC endpoint resolution.

TCP

139

NETBIOS-SSN

NETBIOS session service.

TCP

445

Microsoft-DS

Active Directory required for Active Directory access and authentication.

TCP

1433

ms-sql-s

SQL Server sockets service. This port is required for access to SQL Server. Note that, this number may be different if you have configured your SQL Server to use a different port number.

UDP

123

NTP

Network Time Protocol.

UDP

137

NETBIOS-NS

NETBIOS name service.

UDP

138

NETBIOS-dgm

NETBIOS datagram service.

UDP

445

Microsoft-DS

Active Directory directory service required for Active Directory access and authentication.

UDP

1025

Blackjack

DCOM, used as an RPC listener

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