Configuring System Service Ports - McAfee INTERNET SECURITY SUITE 2008 User Manual

92 McAfee Internet Security

Configuring system service ports

System service ports can be configured to allow or block remote
network access to a service on your computer.
The list below shows the common system services and their
associated ports:
File Transfer Protocol (FTP) Ports 20-21
Mail Server (IMAP) Port 143
Mail Server (POP3) Port 110
Mail Server (SMTP) Port 25
Microsoft Directory Server (MSFT DS) Port 445
Microsoft SQL Server (MSFT SQL) Port 1433
Network Time Protocol Port 123
Remote Desktop / Remote Assistance / Terminal Server (RDP)
Port 3389
Remote Procedure Calls (RPC) Port 135
Secure Web Server (HTTPS) Port 443
Universal Plug and Play (UPNP) Port 5000
Web Server (HTTP) Port 80
Windows File Sharing (NETBIOS) Ports 137-139
System service ports can also be configured to allow a computer
to share its Internet connection with other computers connected
to it through the same network. This connection, known as
Internet Connection Sharing (ICS), allows the computer that is
sharing the connection to act as a gateway to the Internet for the
other networked computer.
Note:
If your computer has an application that accepts either
Web or FTP server connections, the computer sharing the
connection may need to open the associated system service port
and allow forwarding of incoming connections for those ports.