How to open port 1688 to activate Windows

Activate Windows on home computer and organizations varies considerably. Companies with a developed branch network and a significant number of workstations can use the key management service Microsoft. For it to work properly you need to open port 1688 on all computers in the corporate network. How to do it and what are the advantages of this type of activation - we will tell you in this article.

TCP/IP

To understand the role of the port in the operating system, refer to the basic principles of work TCP/IP. Any computer on a network gets explicitly or implicitly assigned a numeric address. The computer itself with other “neighbors” in a network communicates. Data exchange is only required operating system and installed programs. The transmission of information is not spontaneously, but by using specific ports.

The General principle of such electronic communication can be described by analogy with the postal service. To deliver a shipment from one city to another, i.e. from one network to another, you must know how to find the recipient. In this case, the IP address acts as the house number and the port as the apartment number. To accept the parcel, it is necessary to open the door, or in our case - open port 1688, which is responsible for the work of service, volume activation of the OS.

The Role of a firewall

The Limiter is designed to control which programs can use the network connection, and what is not, the operating system acts as a firewall. The greatest distribution in the OS received a so-called packet filters. Their principle of operation is based on the analysis of information contained in a header transmitted on the network dataset.

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The analysis uses the following features:

• IP address of the sender and recipient.
• The Type of the used transmission Protocol.
• Service Protocol headers.
• The port used by the packet at the sender and the recipient.

In Concluding our analogy with the postal service, we can say that a firewall plays the role of a customs authority that determines whether the contents of the forwarded parcels are allowed, and whether to accept it. Since KMS is not used on all computers by default, we are forced to consider how to open port 1688.

Key management Service

Key Management Service or KMS - electronic service, developed by Microsoft and is used to activate computers running Windows OS, operating in corporate networks. The convenience is that IT professionals can deploy any number of jobs and automatically conduct remote activation operating systems. For this you only need to open port 1688 on remote machines.

To start the service key management computer network must be sufficiently developed and must include a minimum of 5 servers and 25 client terminals. In this case, it is believed that the activation threshold is reached, and any new computer will do it automatically. In this case, the KMS server will not require a separate machine because of the small data exchange between him and jobs. After passing the minimum threshold, the network can be expanded further, the maximum limit on the number of its constituent computers are not installed.

Open port

Let's check the state and find out how to open port 1688 for KMS-service, to provide the ability to automatically activate a new computer included in the network. To perform all operations will be normal operations that are part of the Windows operating system.

So, first we need to check the current status of ports. Use the program “Command prompt” supplied by “Standard” of the OS. In it we will need to enter the following line:

Netstat-a

The result of executing this command you will get a list of ports used OS. If you see that the desired port is not listed, it must be opened manually by creating a special rule in the network filter.

Implying that the KMS server is already available, consider how to open port 1688. On Windows 8 and other current versions of the OS running on the client machines, it's best to use the graphical interface of the firewall. Call it in two ways. Using the utility “Run” by typing Firewall.cpl; Or go to control Panel and choose “Windows Firewall". In the section “more settings” to create rules for inbound and outbound TCP/IP port 1688. Then in the Windows command prompt, you will need to perform the following steps:

• Slmgr /ipk

Installing the KMS public key.

• Slmgr /skms kms-server.winkey.com:1688

Specifies the name and port of the server. Instead winkey.com you will need to enter the specified network in the corporate name.

• Slmgr /ato

The activation is started, the OS on the client computer.

• Slmgr /dlv or Slmgr /dlv All

Check the status of the system. The second command will also check the activation of the office Suite.

Conclusion

This article Describes actions can help the novice system administrator to open port 1688 and organize automatic license acquisition computers running Windows.