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It's also required for all clients that are member of a domain.ДЈ10099 Description of the Portqry.exe command-line utility This means that TCP port 135 a required port for most deployments that go beyond basic LDAP queries. The RPC end point mapper database listens to port 135. RPC interfaces offered by Active Directory can use dynamic server ports (most are configurable.) Clients use the RPC Endpoint Mapper to find the server port of the RPC interface of a specific Active Directory service. The response from the LDAP server is parsed, formatted, and returned to the user. It sends an LDAP query, using either UDP or TCP, and interprets the LDAP server's response to the query. With PortQry, you can also query an LDAP service. By default, TCP ports are queried three times and UDP ports are queried one time before reporting the target port is filtered. A process may or may not be listening on the port.

PortQry didn't receive a response from the target port.

Filtered: The target port on the target system is being filtered.

Or, if the target port is a TCP port, Portqry received a TCP acknowledgment packet with the Reset flag set. PortQry received an Internet Control Message Protocol (ICMP)'Destination Unreachable - Port Unreachable' message back from the target UDP port.

Not Listening: No process is listening on the target port on the target system.

PortQry received a response from the port.

Listening: A process is listening on the target port on the target system.PortQry reports the status of a port in one of three ways:

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To download the PortQueryUI tool, visit the following Microsoft Web site:Дownload PortQryUI - User Interface for the PortQry Command Line Port Scanner More information The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file.ДЄ graphical version of the PortQry tool, called PortQueryUI, contains additional features that can make using PortQry easier to use.

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Microsoft used the most current virus-detection software that was available on the date that the file was posted.

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exe, visit the following Microsoft Web site:Дownload PortQry Command Line Port Scanner Version 2.0ДЇor more information about how to download Microsoft Support files, see following the Microsoft Knowledge Base:ДЎ19591 How to Obtain Microsoft Support Files from Online Services

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exe is available for download from the Microsoft Download Center. Verifying network connectivity over the required ports and protocols is especially useful when domain controllers are deployed across intermediate devices including firewalls. Other components on which ADDS is dependent.Active Directory for Lightweight Directory Access Protocol (LDAP).Active Directory Domain Services (ADDS).This article describes how to use portqry to verify basic TCP/IP connectivity for Active Directory and Active Directory related components including:

You can run PortQry to test network connectivity for any Windows component or scenario on any version of Windows. The utility reports the port status of Transition Control Protocol (TCP) and User Datagram Protocol (UDP) ports on a remote computer. PortQry is a command-line utility that you can use to troubleshoot TCP/IP connectivity used by Windows components and features. This article describes how to run PortQry to test network connectivity for any Windows component or scenario on any version of Windows.ДЄpplies to: Windows Server 2012 R2 Original KB number: 816103 Introduction