Windows NT, Terminal Server, and Microsoft Exchange Services Use TCP/IP Ports

ID: Q150543

The information in this article applies to:

SUMMARY

This article discusses the known TCP/IP ports (TCP and/or UDP) that are used by services within Microsoft Windows NT version 4.0 and Microsoft Exchange Server version 5.0. This is not a complete list of TCP/IP port assignments.

For additional TCP/IP port assignment information, see the following articles in the Microsoft Knowledge Base:

Q174904 Information About TCP/IP Port Assignments
Q176466 XGEN: TCP Ports and Microsoft Exchange: In-depth Discussion



MORE INFORMATION

List of Ports Used by Windows NT version 4.0 services: 


Function                    Static ports
--------                    ------------

Browsing                    UDP:137,138
DHCP Lease                  UDP:67,68
DHCP Manager                TCP:135
Directory Replication       UDP:138 TCP:139
DNS Administration          TCP:135
DNS Resolution              UDP:53
Event Viewer                TCP:139
File Sharing                TCP:139
Logon Sequence              UDP:137,138 TCP139
NetLogon                    UDP:138
Pass Through Validation     UDP:137,138 TCP:139
Performance Monitor         TCP:139
PPTP                        TCP:1723 IP Protocol:47
Printing                    UDP:137,138 TCP:139
Registry Editor             TCP:139
Server Manager              TCP:139
Trusts                      UDP:137,138 TCP:139
User Manager                TCP:139
WinNT Diagnostics           TCP:139
WinNT Secure Channel        UDP:137,138 TCP:139
WINS Replication            TCP:42
WINS Manager                TCP:135
WINS Registration           TCP:137


List of Ports Used by WLBS and Convoy for Cluster Control:


Function                    Static ports

--------                    ------------
Convoy                      UDP:1717 
WLBS                        UDP:2504


List of Ports Used by Microsoft Exchange Server version 5.0: 


Function                    Static ports

--------                    ------------

Client/Server Comm.         TCP:135
Exchange Administrator      TCP:135
IMAP                        TCP:143
IMAP (SSL)                  TCP:993
LDAP                        TCP:389
LDAP (SSL)                  TCP:636
MTA - X.400 over TCP/IP     TCP:102
POP3                        TCP:110
POP3 (SSL)                  TCP:995
RPC                         TCP:135
SMTP                        TCP:25
NNTP                        TCP:119
NNTP (SSL)                  TCP:563


For additional information, please see the following article(s) in the Microsoft Knowledge Base:
Q176466 XGEN: TCP Ports and Microsoft Exchange: In-depth Discussion




List of Ports Used by Terminal Server Clients 


Function                    Static ports

--------                    ------------

RDP Client (Microsoft)      TCP:3389 (Pre Beta2:1503)
ICA Client (Citrix)         TCP:1494<BR/> 



Keywords          : kbnetwork ntprotocol nttcp XGEN 
Version           : winnt:1.0,4.0,5.0
Platform          : winnt 
Issue type        : kbinfo

Last Reviewed: February 18, 1999