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Port Assignments for Commonly-Used Services

There are many services associated with the Windows 2000 operating system. These services might require more than one TCP or UDP port for the service to be functional. Table C.3 shows the default ports that are used by each service mentioned.

Table C.3 Default Port Assignments for Common Services

Service Name

UDP

TCP

Browsing datagram responses of NetBIOS over TCP/IP

138

 

Browsing requests of NetBIOS over TCP/IP

137

 

Client/Server Communication

 

135

Common Internet File System (CIFS)

445

139, 445

Content Replication Service

 

560

Cybercash Administration

 

8001

Cybercash Coin Gateway

 

8002

Cybercash Credit Gateway

 

8000

DCOM (SCM uses udp/tcp to dynamically assign ports for DCOM)

135

135

DHCP client

 

67

DHCP server

 

68

DHCP Manager

 

135

DNS Administration

 

139

DNS client to server lookup (varies)

53

53

Exchange Server 5.0

 

 

   Client Server Communication

 

   135

   Exchange Administrator

 

   135

   IMAP

 

   143

   IMAP (SSL)

 

   993

   LDAP

 

   389

   LDAP (SSL)

 

   636

   MTA - X.400 over TCP/IP

 

   102

   POP3

 

   110

   POP3 (SSL)

 

   995

   RPC

 

   135

   SMTP

 

   25

   NNTP

 

   119

   NNTP (SSL)

 

   563

File shares name lookup

137

 

File shares session

 

139

FTP

 

21

FTP-data

 

20

HTTP

 

80

HTTP-Secure Sockets Layer (SSL)

 

443

Internet Information Services (IIS)

 

80

IMAP

 

143

IMAP (SSL)

 

993

IKE (For more information, see Table C.4)

500

 

IPSec Authentication Header (AH) (For more information, see Table C.4)

 

 

IPSec Encapsulation Security Payload (ESP) (For more information, see Table C.4)

 

 

IRC

 

531

ISPMOD (SBS 2nd tier DNS registration wizard)

 

1234

Kerberos de-multiplexer

 

2053

Kerberos klogin

 

543

Kerberos kpasswd (v5)

464

464

Kerberos krb5

88

88

Kerberos kshell

 

544

L2TP

1701

 

LDAP

 

389

LDAP (SSL)

 

636

Login Sequence

137, 138

139

Macintosh, File Services (AFP/IP)

 

548

Membership DPA

 

568

Membership MSN

 

569

Microsoft Chat client to server

 

6667

Microsoft Chat server to server

 

6665

Microsoft Message Queue Server

1801

1801

Microsoft Message Queue Server

3527

135, 2101

Microsoft Message Queue Server

 

2103, 2105

MTA - X.400 over TCP/IP

 

102

NetBT datagrams

138

 

NetBT name lookups

137

 

NetBT service sessions

 

139

NetLogon

138

 

NetMeeting Audio Call Control

 

1731

NetMeeting H.323 call setup

 

1720

NetMeeting H.323 streaming RTP over UDP

Dynamic

 

NetMeeting Internet Locator Server ILS

 

389

NetMeeting RTP audio stream

Dynamic

 

NetMeeting T.120

 

1503

NetMeeting User Location Service

 

522

NetMeeting user location service ULS

 

522

Network Load Balancing

2504

 

NNTP

 

119

NNTP (SSL)

 

563

Outlook (see for ports)

 

 

Pass Through Verification

137, 138

139

POP3

 

110

POP3 (SSL)

 

995

PPTP control

 

1723

PPTP data (see Table C.4)

 

 

Printer sharing name lookup

137

 

Printer sharing session

 

139

Radius accounting (Routing and Remote Access)

1646 or 1813

 

Radius authentication (Routing and Remote Access)

1645 or 1812

 

Remote Install TFTP

 

69

RPC client fixed port session queries

 

1500

RPC client using a fixed port session replication

 

2500

RPC session ports

 

Dynamic

RPC user manager, service manager, port mapper

 

135

SCM used by DCOM

135

135

SMTP

 

25

SNMP

161

 

SNMP Trap

162

 

SQL Named Pipes encryption over other protocols name lookup

137

 

SQL RPC encryption over other protocols name lookup

137

 

SQL session

 

139

SQL session

 

1433

SQL session

 

1024 - 5000

SQL session mapper

 

135

SQL TCP client name lookup

53

53

Telnet

 

23

Terminal Server

 

3389

UNIX Printing

 

515

WINS Manager

 

135

WINS NetBios over TCP/IP name service

137

 

WINS Proxy

137

 

WINS Registration

 

137

WINS Replication

 

42

X400

 

102