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Simple TCP/IP Services (System Services for the Windows Server 2003 Family and Windows XP Operating Systems)

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

Service Name: SimpTcp

Executable Name: Tcpsvcs.exe

Log On As: NetworkService

Description: Simple TCP/IP Services implements support for the Echo, Discard, Character Generator, Daytime, and Quote of the Day protocols.

  • Echo (port 7, RFC 862) This protocol echoes back data from any messages it receives on this server port. Echo can be useful as a network debugging and monitoring tool.

  • Discard (port 9, RFC 863) This protocol discards all messages received on this port without response or acknowledgment. It can serve as a null port for receiving and routing TCP/IP test messages during network setup and configuration or, in some cases, it can be used by programs as a message discard function.

  • Character Generator (CHARGEN) (port 19, RFC 864) This protocol sends data made up of the set of 95 printable ASCII characters. It is useful as a debugging tool for testing or troubleshooting line printers.

  • Daytime (port 13, RFC 867) This protocol returns messages containing the day of the week, month, day, year, current time (in hh:mm:ss format), and time-zone information. Some programs can use the output from this service for debugging or monitoring variations in system clock time or on a different host.

  • Quote of the Day (port 17, RFC 865) This protocol returns a quotation as one or more lines of text in a message. Quotations are taken at random from the following file: systemroot\System32\Drivers\Etc\Quotes. A sample quote file is installed with Simple TCP/IP Services. If this file is missing, the quote service fails.

To find RFC standards, see the Request For Comments (RFC) link on the Web Resources page at

After this service is installed and started, all five protocols are enabled on all network adapters. There is no provision for selectively enabling specific protocols or enabling this service on a per–network adapter basis.

Stopping or disabling this service has no effect on the rest of the operating system.

You should not install Simple TCP/IP Services unless you specifically need this service to support communication with other systems that use this protocol service.

Available on: Windows Server 2003, Standard Edition; Windows Server 2003, Enterprise Edition; Windows Server 2003, Datacenter Edition and Windows Server 2003, Web Edition.

Installed through: Default operating system installation

Startup type: Automatic

Service status: Started

This service depends on the following system components:

AFD Networking Support Environment

The following system components depend on this service:


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