McAfee Help

You can use the Lockdown security level to block all incoming and outgoing traffic between your PC and the Internet.

1	Open the Firewall settings page. How? 1 On the Home Page, click Firewall. 2 Click Settings.
2	Click Security Levels.
3	Select Lockdown.
4	Click Apply. If you are locking down Personal Firewall because you suspect a program on your PC is sending malicious data, make sure to follow up with a full scan of your PC.