Microsoft KB Archive/891759

= Network ports and protocols that are used by services in Windows Services for UNIX 3.5 =

Article ID: 891759

Article Last Modified on 1/27/2005

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APPLIES TO


 * Microsoft Windows Services for UNIX 3.5

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INTRODUCTION
This article lists the network ports and protocols that are used by services on a computer that is running Microsoft Windows Services for UNIX 3.5.

A variety of network ports and protocols are used to communicate with client computers and with other server systems over the network. Dedicated firewalls, host-based firewalls, and Internet Protocol security (IPSec) filters are other important components that are required to help secure your network. However, if these technologies are configured to block ports and protocols that a specific server uses, that server will no longer respond to client requests.

This article contains a table that lists the ports and the protocols that each service requires for correct operation. Use the table to help you identify the ports and the protocols that a particular service uses.



MORE INFORMATION
The following table lists the name of the service, the ports and protocols that are used by the service, the alias of the service, and the comment line for the service.

Additionally, Windows Services for UNIX 3.5 can use other ports. For example, the following table lists the Network File System (NFS)-related services that register with the Open Network Computing (ONC) Remote Procedure Call (RPC) service:

The four services that are listed in the table listen for both Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) traffic and do not use designated ports. Instead, the services use a port that is available at that particular time and register the port with the Portmapper service. For example, when you run the rpcinfo - p command, you receive the following output:

program version  protocol   port -- 100000      2      udp      111    portmapper 100000      2      tcp      111    portmapper 351455      1      tcp      844    mapsvc 351455      1      udp      845    mapsvc 351455      2      tcp      846    mapsvc 351455      2      udp      847    mapsvc 100005      1      udp     1048    mountd 100005      2      udp     1048    mountd 100005      3      udp     1048    mountd 100005      1      tcp     1048    mountd 100005      2      tcp     1048    mountd 100005      3      tcp     1048    mountd 100021      1      udp     1047    nlockmgr 100021      2      udp     1047    nlockmgr 100021      3      udp     1047    nlockmgr 100021      4      udp     1047    nlockmgr 100021      1      tcp     1047    nlockmgr 100021      2      tcp     1047    nlockmgr 100021      3      tcp     1047    nlockmgr 100021      4      tcp     1047    nlockmgr 100024      1      udp     1039    status 100024      1      tcp     1039    status 100003      2      udp     2049    nfs 100003      3      udp     2049    nfs 100003      2      tcp     2049    nfs 100003      3      tcp     2049    nfs

In this example, only the Portmapper service and the NFS service use standard ports.

Additional notes:
 * Custom Interix applications and third-party Interix applications may bind to additional ports.
 * If you add a &quot;camp-&quot; prefix to the name of the service in the /etc/inetd.conf file, Interix determines the port that the service uses. However, Interix does not the start the service when a request is made. By adding the prefix, you disable the service, and you restrict other applications from using that port.

Note Do not include the quotation marks in the prefix.

For additional information about the network ports and protocols that are used by the Microsoft Windows server system, click the following article number to view the article in the Microsoft Knowledge Base:

832017 Port requirements for the Microsoft Windows server system

For additional information about the ports that must be open for a Windows Services for UNIX product to work with Microsoft Windows XP Service Pack 2, click the following article number to view the article in the Microsoft Knowledge Base:

883105 Description of the ports that have to be open for a Windows Services for UNIX product to work correctly

Keywords: kbinfo kbtshoot KB891759

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