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Port Assignments for Commonly-Used Services
There are many services associated with the Windows operating system. These services might require more than one TCP or UDP port for the service to be functional. The table below shows the default ports that are used by each service mentioned.
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 | 39 |
|
FTP | 21 |
|
FTP-DATA | 20 |
|
HTTP | 80 |
|
HTTP - Secure Socket Layer (SSL) | 443 |
|
Internet Information Service (IIS) | 80 |
|
IMAP | 143 |
|
IMAP (SSL) | 993 |
|
500 | ||
IPSec Authentication Header (AH) (for more information) | ||
IPSec Encapsulaation Security Payload (for more information)(ESP) | ||
IRC | 531 |
|
ISPMOD (SBS 2nd tier DNS registration wizard) | 1234 |
|
Kerberos de-multiplexor | 2053 |
|
Kerberos klogin | 543 |
|
Kerberos kpassword (v5)_ | 464 | 464 |
Kerberos krb5 | 88 | 88 |
Kerberos ksell (v5) | 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 Client to server | 66654 |
|
Microsoft Message Queue Server | 1801 | 1801 |
Microsoft Message Queue Server | 3257 | 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 | |
Pass Through Verification | 137,138 | 139 |
PPTP control | 1723 |
|
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 |
|
RDP | 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 |