List of Windows Service Ports

Port - Protocol - Service Description

21 TCP FTP File Transfer Protocol server
23 TCP Telnet Telnet service
68 UDP DHCP Dynamic Host Configuration Protocol client
80 TCP HTTP HyperText Transfer Protocol server
123 UDP NTP Network Time Protocol client (Windows Time)
135 TCP epmap DCE Endpoint Resolution (remote procedure call)
137 UDP NetBIOS-ns NetBIOS Name Service
138 UDP NetBIOS-dgm NetBIOS Datagram Service
139 TCP NetBIOS-ssn NetBIOS Session Service
161 UDP SNMP Simple Network Management Protocol
213 UDP IPX Over IP Client Service for Netware service
443 TCP HTTPS HTTP over SSL server
445 TCP, UDP microsoft-ds (SMB) Microsoft Common Internet File System (CIFS)
500 UDP IKE Internet Key Exchange (often used with IPsec)
515 TCP LPR Print Spooler service
522 TCP NetMeeting client178
1503 TCP NetMeeting client
1701 UDP L2TP Layer 2 Tunneling Protocol client
1720 TCP NetMeeting client
1723 TCP/UDP PPTP Point-to-Point Tunneling Protocol client
1731 TCP NetMeeting client
1900 UDP SSDP Simple Service Discovery Protocol
2001-2120 UDP Windows Messenger voice calls179
2869 TCP UPnP Universal Plug and Play
3002 TCP Windows Firewall/Sharing
3003 TCP Windows Firewall/Sharing
3389 TCP RDP Remote Desktop Protocol service
4500 UDP L2TP/IPsec NAT-T L2TP/IPSec
5000 TCP UPnP Universal Plug and Play
6801 UDP Windows Messenger voice calls
6891-6900 TCP Windows Messenger file transfers
6901 TCP/UDP Windows Messenger voice call