Port Assignments for Commonly Used Services
There are many services associated with the Microsoft® Windows® 2000 operating system. These services may require more than one Transmission Control Protocol (TCP) or User Datagram Protocol (UDP) port for the service to be functional. The following table shows the default ports That Each Service Uses.
Service Name
UDP
TCP
Browsing DataGram Responses of NetBIOS over TCP / IP (NetBt) 138
Browsing requests of NetBT 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 Distributed Component Object Model (DCOM) (SCM Ude UDP / TCP To Dynamically Assign Ports for DCOM) 135
135
Domain Name System (DNS) Client To Server Lookup (Varies) 53
53
DNS Administration
139
Dynamic Host Configuration Protocol (DHCP) Client
67
DHCP Manager
135
DHCP Server
68
Exchange Administrator
135
EXCHANGE Server 5.0
File Shares Name Lookup 137
File Shares session
139 FILE TRANSFER Protocol (FTP)
21 FTP-DATA
20 Hypertext Transfer Protocol (HTTP)
80 HTTP-Secure Sockets Layer (SSL)
443 Internet Information SERVICES (IIS)
80 Internet Key Exchange (IKE) 500
Internet Message Access Protocol (IMAP)
143
IMAP (SSL)
993
Internet Protocol Security (IPSec) Authentication Header (AH)
IPsec Encapsulating Security PayLoad (ESP)
Internet Relay Chat (IRC)
531 ispmod (SBS 2nd Tier DNS Registration Wizard)
1234 Kerberos de-Multiplexer
2053 Kerberos Klogin
543 Kerberos Kpasswd (V5) 464 464
(Continued)
Service Name
UDP
TCP
Kerberos Krb5 88 88 Kerberos Kshell
544 Layer Two Tunnely Protocol (L2TP) 1701
LightWeight Directory Access Protocol (LDAP) 389
LDAP (SSL)
636 Login Sequence 137, 138 139 Macintosh, File Services (AFP / IP)
548 MEMBERSHIP DPA
568 MEMBERSHIP MSN
569 Message Transfer Agent (MTA) - X.400 over TCP / IP
102 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 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 Street Dynamic
NetMeeting T.120
1503 NetMeeting User Location Service
522 NetWork Load Balancing 2504
NetWork News Transport Protocol (NNTP)
119
NNTP (SSL)
563 Outlook (See For Ports)
PASS THROUGH VERIFICATION 137, 138 139 Point-to-Point Tunnely Protocol (PPTP) Control
1723 PPTP Data
Post Office Protocol Version 3 (POP3)
110
POP3 (SSL)
995 Printer Sharing Name Lookup 137
Printer Sharing Session
139
(Continued)
Service Name
UDP
TCP
REMOTE Authentication Dial-in User Service (Radius) Authentication (Routing and Remote Access) 1645 OR 1812
Radius Accounting (Routing and Remote Access) 1646 OR 1813
Remote Install TFTP
69 REMOTE Procedure Call (RPC)
135
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 Service Control Manager (SCM) Used by DCOM 135 135 Simple Mail Transfer Protocol (SMTP)
25
SIMPLE NetWork Management Protocol (SNMP) 161
SNMP TRAP 162
SQL Named Pipes Encryption over Other Protocols Name Lookup 137sql 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 Services
3389 Unix Printing
515 Windows Internet Name Service (WINS) Manager
135 WINS NetBt Name Service 137
Wins Proxy 137
Wins Registration
137 WINS Replication
42 x400
102
