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This page is from Microsoft Knowledge Base
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 TCP:139
NetLogon                    UDP:138
Pass Through Validation     UDP:137,138 TCP:139
Performance Monitor         TCP:139
PPTP                        TCP:1723 IP Protocol:47 (GRE)
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, see the following article or articles in the Microsoft Knowledge Base:

176466 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)
ActiveX Client (TSAC)       TCP:80, 3389
ICA Client (Citrix)         TCP:1494

NOTE: Terminal Server uses port 3389.

Additional Ports Used by Windows 2000 services:

Function                              Static ports
--------                              ------------
Direct Hosting of  SMB Over TCP/IP    TCP,UDP: 445

   ISAKMP                             UDP: 500
   ESP                                IP Protocol 50	
   AH                                 IP Protocol 51

Kerberos                              TCP,UDP: 88
RSVP                                  IP Protocol 46


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