| Port |
Agreement |
Application protocols |
System service Name |
| N/A |
Gre |
GRE (IP protocol 47) |
Routing and Remote Access |
| N/A |
Esp |
IPsec ESP (IP protocol 50) |
Routing and Remote Access |
| N/A |
AH |
IPsec AH (IP Protocol 51) |
Routing and Remote Access |
| 7 |
Tcp |
Echo |
Simple TCP/IP Services |
| 7 |
Udp |
Echo |
Simple TCP/IP Services |
| 9 |
Tcp |
Discard |
Simple TCP/IP Services |
| 9 |
Udp |
Discard |
Simple TCP/IP Services |
| 13 |
Tcp |
Daytime |
Simple TCP/IP Services |
| 13 |
Udp |
Daytime |
Simple TCP/IP Services |
| 17 |
Tcp |
Quotd |
Simple TCP/IP Services |
| 17 |
Udp |
Quotd |
Simple TCP/IP Services |
| 19 |
Tcp |
Chargen |
Simple TCP/IP Services |
| 19 |
Udp |
Chargen |
Simple TCP/IP Services |
| 20 |
Tcp |
FTP default data |
FTP Publishing Service |
| 21st |
Tcp |
FTP Control |
FTP Publishing Service |
| 21st |
Tcp |
FTP Control |
Application Layer Gateway Service |
| 23 |
Tcp |
Telnet |
Telnet |
| 25 |
Tcp |
Smtp |
Simple Mail Transfer Protocol |
| 25 |
Tcp |
Smtp |
Exchange Server |
| 42 |
Tcp |
WINS replication |
Windows Internet Name Service |
| 42 |
Udp |
WINS replication |
Windows Internet Name Service |
| 53 |
Tcp |
Dns |
DNS Server |
| 53 |
Udp |
Dns |
DNS Server |
| 53 |
Tcp |
Dns |
Internet Connection Firewall/internet Connection Sharing |
| 53 |
Udp |
Dns |
Internet Connection Firewall/internet Connection Sharing |
| 67 |
Udp |
DHCP Server |
DHCP Server |
| 67 |
Udp |
DHCP Server |
Internet Connection Firewall/internet Connection Sharing |
| 69 |
Udp |
Tftp |
Ordinary FTP Daemon Service |
| 80 |
Tcp |
HTTP |
Windows Media Service |
| 80 |
Tcp |
HTTP |
World Wide Web Publishing services |
| 80 |
Tcp |
HTTP |
SharePoint Portal Server |
| 88 |
Tcp |
Kerberos |
Kerberos Key Distribution Center |
| 88 |
Udp |
Kerberos |
Kerberos Key Distribution Center |
| 102 |
Tcp |
X.400 |
Microsoft Exchange MTA Stacks |
| 110 |
Tcp |
POP3 |
Microsoft POP3 Services |
| 110 |
Tcp |
POP3 |
Exchange Server |
| 119 |
Tcp |
NNTP |
Network News Transfer Protocol |
| 123 |
Udp |
Ntp |
Windows time |
| 123 |
Udp |
SNTP |
Windows time |
| 135 |
Tcp |
Rpc |
Message Queuing |
| 135 |
Tcp |
Rpc |
Remote Procedure Call |
| 135 |
Tcp |
Rpc |
Exchange Server |
| 135 |
Tcp |
Rpc |
Certificate Services |
| 135 |
Tcp |
Rpc |
Cluster service |
| 135 |
Tcp |
Rpc |
Distributed File System |
| 135 |
Tcp |
Rpc |
Distributed Link Tracking |
| 135 |
Tcp |
Rpc |
Distributed Transaction Coordinator |
| 135 |
Tcp |
Rpc |
Distributed File Replication Service |
| 135 |
Tcp |
Rpc |
Fax Service |
| 135 |
Tcp |
Rpc |
Microsoft Exchange Server |
| 135 |
Tcp |
Rpc |
File Replication Service |
| 135 |
Tcp |
Rpc |
Group Policy |
| 135 |
Tcp |
Rpc |
Local security agencies |
| 135 |
Tcp |
Rpc |
Remote Storage Notification |
| 135 |
Tcp |
Rpc |
Remote Storage Server |
| 135 |
Tcp |
Rpc |
Systems Management Server 2.0 |
| 135 |
Tcp |
Rpc |
Terminal Services Licensing |
| 135 |
Tcp |
Rpc |
Terminal Services Session Directory |
| 137 |
Udp |
NetBIOS Name resolution |
Computer Browser |
| 137 |
Udp |
NetBIOS Name resolution |
Server |
| 137 |
Udp |
NetBIOS Name resolution |
Windows Internet Name Service |
| 137 |
Udp |
NetBIOS Name resolution |
Network Login |
| 137 |
Udp |
NetBIOS Name resolution |
Systems Management Server 2.0 |
| 138 |
Udp |
NetBIOS Datagram Service |
Computer Browser |
| 138 |
Udp |
NetBIOS Datagram Service |
Messenger Service |
| 138 |
Udp |
NetBIOS Datagram Service |
Server |
| 138 |
Udp |
NetBIOS Datagram Service |
Network Login |
| 138 |
Udp |
NetBIOS Datagram Service |
Distributed File System |
| 138 |
Udp |
NetBIOS Datagram Service |
Systems Management Server 2.0 |
| 138 |
Udp |
NetBIOS Datagram Service |
License Logging Service |
| 139 |
Tcp |
NetBIOS Session Service |
Computer Browser |
| 139 |
Tcp |
NetBIOS Session Service |
Fax Service |
| 139 |
Tcp |
NetBIOS Session Service |
Performance Logs and Alerts |
| 139 |
Tcp |
NetBIOS Session Service |
Background Print Program |
| 139 |
Tcp |
NetBIOS Session Service |
Server |
| 139 |
Tcp |
NetBIOS Session Service |
Network Login |
| 139 |
Tcp |
NetBIOS Session Service |
Remote Procedure Call Locator |
| 139 |
Tcp |
NetBIOS Session Service |
Distributed File System |
| 139 |
Tcp |
NetBIOS Session Service |
Systems Management Server 2.0 |
| 139 |
Tcp |
NetBIOS Session Service |
License Logging Service |
| 143 |
Tcp |
Imap |
Exchange Server |
| 161 |
Udp |
Snmp |
SNMP Service |
| 162 |
Udp |
SNMP Trap Outbound |
SNMP Trap Service |
| 389 |
Tcp |
LDAP Server |
Local security agencies |
| 389 |
Udp |
DC Locator |
Local security agencies |
| 389 |
Tcp |
LDAP Server |
Distributed File System |
| 389 |
Udp |
DC Locator |
Distributed File System |
| 389 |
Udp |
DC Locator |
Netlogon |
| 389 |
Udp |
DC Locator |
Kerberos Key Distribution Center |
| 443 |
Tcp |
HTTPS |
HTTP SSL |
| 443 |
Tcp |
HTTPS |
World Wide Web Publishing services |
| 443 |
Tcp |
HTTPS |
SharePoint Portal Server |
| 443 |
Tcp |
RPC over HTTPS |
Exchange Server 2003 |
| 445 |
Tcp |
Smb |
Fax Service |
| 445 |
Tcp |
Smb |
Background Print Program |
| 445 |
Tcp |
Smb |
Server |
| 445 |
Tcp |
Smb |
Remote Procedure Call Locator |
| 445 |
Tcp |
Smb |
Distributed File System |
| 445 |
Tcp |
Smb |
License Logging Service |
| 445 |
Tcp |
Smb |
Network Login |
| 464 |
Udp |
Kerberos Password V5 |
Kerberos Key Distribution Center |
| 464 |
Tcp |
Kerberos Password V5 |
Kerberos Key Distribution Center |
| 500 |
Udp |
IPsec ISAKMP |
Local security agencies |
| 515 |
Tcp |
LPD |
TCP/IP Print server |
| 548 |
Tcp |
Macintosh File Server |
Macintosh File Server |
| 554 |
Tcp |
RTSP |
Windows Media Service |
| 563 |
Tcp |
NNTP over SSL |
Network News Transfer Protocol |
| 593 |
Tcp |
RPC over HTTPS Endpoint Mapper |
Remote Procedure Call |
| 593 |
Tcp |
RPC over HTTPS |
Exchange Server |
| 636 |
Tcp |
LDAP SSL |
Local security agencies |
| 636 |
Udp |
LDAP SSL |
Local security agencies |
| 993 |
Tcp |
IMAP over SSL |
Exchange Server |
| 995 |
Tcp |
POP3 over SSL |
Exchange Server |
| 1067 |
Tcp |
To install the bootstrapper service |
Installing the Bootstrapper Protocol server |
| 1068 |
Tcp |
To install the bootstrapper service |
Installing the Bootstrapper Protocol Client |
| 1270 |
Tcp |
MOM encryption |
Microsoft Operations Manager 2000 |
| 1433 |
Tcp |
SQL over TCP |
Microsoft SQL Server |
| 1433 |
Tcp |
SQL over TCP |
Mssql$uddi |
| 1434 |
Udp |
SQL Probe |
Microsoft SQL Server |
| 1434 |
Udp |
SQL Probe |
Mssql$uddi |
| 1645 |
Udp |
Legacy RADIUS |
Internet Authentication Services |
| 1646 |
Udp |
Legacy RADIUS |
Internet Authentication Services |
| 1701 |
Udp |
L2tp |
Routing and Remote Access |
| 1723 |
Tcp |
PPTP |
Routing and Remote Access |
| 1755 |
Tcp |
MMS |
Windows Media Service |
| 1755 |
Udp |
MMS |
Windows Media Service |
| 1801 |
Tcp |
Msmq |
Message Queuing |
| 1801 |
Udp |
Msmq |
Message Queuing |
| 1812 |
Udp |
RADIUS Authentication |
Internet Authentication Services |
| 1813 |
Udp |
RADIUS Accounting |
Internet Authentication Services |
| 1900 |
Udp |
SSDP |
SSDP Discovery Service |
| 2101 |
Tcp |
Msmq-dcs |
Message Queuing |
| 2103 |
Tcp |
Msmq-rpc |
Message Queuing |
| 2105 |
Tcp |
Msmq-rpc |
Message Queuing |
| 2107 |
Tcp |
Msmq-mgmt |
Message Queuing |
| 2393 |
Tcp |
OLAP Services 7.0 |
SQL Server: Downlevel OLAP Client Support |
| 2394 |
Tcp |
OLAP Services 7.0 |
SQL Server: Downlevel OLAP Client Support |
| 2460 |
Udp |
MS Theater |
Windows Media Service |
| 2535 |
Udp |
MADCAP |
DHCP Server |
| 2701 |
Tcp |
SMS Remote Control (control) |
SMS Remote Control Agent |
| 2701 |
Udp |
SMS Remote Control (control) |
SMS Remote Control Agent |
| 2702 |
Tcp |
SMS remote Control (data) |
SMS Remote Control Agent |
| 2702 |
Udp |
SMS remote Control (data) |
SMS Remote Control Agent |
| 2703 |
Tcp |
SMS Remote Chat |
SMS Remote Control Agent |
| 2703 |
UPD |
SMS Remote Chat |
SMS Remote Control Agent |
| 2704 |
Tcp |
SMS Remote File transfer |
SMS Remote Control Agent |
| 2704 |
Udp |
SMS Remote File transfer |
SMS Remote Control Agent |
| 2725 |
Tcp |
SQL Analytics Services |
SQL Analysis Server |
| 2869 |
Tcp |
UPNP |
Universal Plug and Play device host |
| 2869 |
Tcp |
SSDP Event Notification |
SSDP Discovery Service |
| 3268 |
Tcp |
Global catalog servers |
Local security agencies |
| 3269 |
Tcp |
Global catalog servers |
Local security agencies |
| 3343 |
Udp |
Cluster service |
Cluster service |
| 3389 |
Tcp |
Terminal Services |
NetMeeting Remote Desktop Sharing |
| 3389 |
Tcp |
Terminal Services |
Terminal Services |
| 3527 |
Udp |
Msmq-ping |
Message Queuing |
| 4011 |
Udp |
BINL |
Remote Installation |
| 4500 |
Udp |
Nat-t |
Local security agencies |
| 5000 |
Tcp |
SSDP Old Event Notification |
SSDP Discovery Service |
| 5004 |
Udp |
Rtp |
Windows Media Service |
| 5005 |
Udp |
RTCP |
Windows Media Service |
| 5722 |
Tcp |
Rpc |
Distributed File System replication |
| 6001 |
Tcp |
Information Store |
Exchange Server 2003 |
| 6002 |
Tcp |
Directory references |
Exchange Server 2003 |
| 6004 |
Tcp |
Dsproxy/nspi |
Exchange Server 2003 |
| 42424 |
Tcp |
asp.net session state |
asp.net State Service |
| 51515 |
Tcp |
MOM plaintext |
Microsoft Operations Manager 2000 |
| 1024-65535 |
Tcp |
Rpc |
Randomly assigned high TCP ports |