| TABLE 1: Typical Open Ports on an XP Computer |
| Protocol |
Port |
Description |
| TCP |
135/epmap |
End Point Mapper Microsoft DCE Locator service |
| TCP |
139/netbios-ssn |
NetBIOS over TCP/IP |
| TCP |
445/Microsoft-ds |
Server Message Block (SMB) |
| TCP |
1025 |
RPC |
| TCP |
1566 |
Corel Video |
| TCP |
3389 |
Windows Terminal Services |
| TCP |
4520 |
Windows Update |
| TCP |
5000 |
Microsoft Plug and Play (PnP) |
| UDP |
445/Microsoft-ds |
SMB |
| UDP |
1026 |
Calendar Access Protocol |
| UDP |
1027 |
Calendar Access Protocol |
| UDP |
1029 |
Calendar Access Protocol |
| UDP |
1046 |
Unassigned |
| UDP |
2967 |
SSC-Agent |
| UDP |
123/NTP |
Network Time Protocol |
| UDP |
1900 |
Windows Messenger Broadcasts |
| UDP |
137/Netbios-ns |
NetBIOS Name Service |
| UDP |
139/Netbios-dgm |
NetBIOS Datagram Service |