Article ID: 891759
Article Last Modified on 1/27/2005
APPLIES TO
- Microsoft Windows Services for UNIX 3.5
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.
| Service name | Port number | Protocols | Component | Comment |
|---|---|---|---|---|
| echo | 7 | TCP, UDP | Interix inetid | By default, this service is disabled. |
| discard | 9 | TCP, UDP | Interix inetid | By default, this service is disabled. |
| daytime | 13 | TCP, UDP | Interix inetid | By default, this service is disabled. |
| chargen | 19 | TCP | Interix inetid | By default, this service is disabled. |
| ftp-data | 20 | TCP | Interix in.ftpd | By default, this service is disabled. |
| ftp | 21 | TCP | Interix in.ftpd | By default, this service is disabled. |
| telnet | 23 | TCP | Interix telnetd Telnet server |
By default, the Interix version of this service is disabled. |
| smtp | 25 | TCP | Interix sendmail | By default, this service is disabled. |
| time | 37 | TCP, UDP | Interix inetd | By default, this service is disabled. |
| tftp | 69 | UDP | Interix in.tftpd | By default, this service is disabled. |
| finger | 79 | TCP | Interix fingerd | By default, this service is disabled. |
| pop2 | 109 | TCP | Interix popper | By default, this service is disabled. |
| pop3 | 110 | TCP | Interix popper | By default, this service is disabled. |
| sunrpc | 111 | TCP, UDP | Server for NFS User Name Mapping |
By default, this service is enabled. |
| exec | 512 | TCP | Interix in.rexecd | By default, this service is disabled. |
| login | 513 | TCP | Interix in.rlogind | By default, this service is disabled. |
| cmd | 514 | TCP | Interix in.rshd, Remote Shell Service | By default, Interix rshd is disabled. |
| syslog | 514 | UDP | Interix syslogd | By default, this service is disabled. |
| talk | 517 | UDP | Interix in.ntalkd | By default, this service is disabled. |
| ntalk | 518 | UDP | Interix in.ntalkd | By default, this service is disabled. |
| nfsd | 2049 | TCP, UDP | Server for NFS | By default, this service is enabled. |
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:
| Service name | |
| mapsvc | User Name Mapping service |
| mountd | NFS mount daemon |
| nlockmgr | NFS lock manager |
| status | Network status monitor |
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 "camp-" 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
