
McAfee Total Protection Service Product Guide
87
Examples of system services that typically require ports to be opened are:
•
Email server
— You do not need to open a mail server port to receive email. You need to
open a port only if the computer running firewall protection acts as an email server.
•
Web server
— You do not need to open a web server port to run a web browser. You
need to open a port only if the computer running firewall protection acts as a web server.
NOTE:
An opened service port that does not have an application running on it poses no
security threat. However, we recommend that you close unused ports.
Standard assignments for system service ports
These commonly used standard service ports are listed by default, where you can open or
close them:
• File and Print Sharing
• Remote Desktop
• Remote Assistance
You can add other service ports as needed. Standard service ports for typical system
services are:
Firewall configuration
Protecting computers from suspicious activity with a firewall involves monitoring network
activity to identify applications, IP addresses, and ports, and blocking those that could cause
harm. There are two methods of establishing firewall protection:
• The administrator configures firewall settings in a Total Protection Service policy.
• Each client computer user configures firewall settings for their computer.
Port(s)
System Service
20-21
File Transfer Protocol (FTP)
143
Mail Server (IMAP)
110
Mail Server (POP3)
25
Mail Server (SMTP)
445
Microsoft Directory Server (MSFT DS)
1433
Microsoft SQL Server (MSFT SQL)
123
Network Time Protocol Port
3389 (same as Remote Assistance and Remote Desktop)
Remote Assistance / Terminal Server (RDP)
135
Remote Procedure Calls (RPC)
443
Secure Web Server (HTTPS)
5000
Universal Plug and Play (UPNP)
80
Web Server (HTTP)
137-139 (same as File and Print Sharing)
Windows File Sharing (NETBIOS)
Using Firewall Protection
Firewall configuration
CBS100083_McAfeeProdGde_12-10 87
12/20/10 8:51 AM