Minimal Workstation Defense Techniques (Windows and Mac)
Windows Firewall, previously known as Internet Connection Firewall or ICF, is a protective boundary that monitors and restricts information that travels between your computer and a network or the Internet. This provides a line of defense against someone who might try to access your computer from outside the Windows Firewall without your permission.
To enable Windows Firewall, follow these steps:
1. Click Start, click Run, type Firewall.cpl, and then click OK.
2. On the General tab, click On (recommended).
3. Click OK.
The firewall in Mac OS X v10.5.1 and later is an Application Firewall, which allows you to control connections on a per-application basis, rather than a per-port basis. This makes it easier to gain the benefits of firewall protection, and helps prevent undesirable applications from taking control of network ports that have been opened for legitimate applications.
Configuring the Application Firewall in Mac OS X v10.6 and later
1. Choose System Preferences from the Apple menu.
2. Click Security.
3. Click the Firewall tab.
4. Unlock the pane by clicking the lock in the lower-left corner
5. Enter the administrator username and password.
6. Click Start to enable the firewall.
7. Click Advanced to customize the firewall configuration.