You can lock Personal Firewall instantly with the Lockdown security level, which blocks all incoming and outgoing traffic between your PC and the Internet. Lockdown has the same effect as physically disconnecting the network cables on your PC: it blocks all incoming and outgoing network connections, including access to websites, email, and security updates. You might need to do this if you suspect that a program on your PC is sending or receiving malicious data and you want to block open ports to protect other PCs on your network. You can restore Internet access to your PC by selecting any of the other security levels (Full Access, Outgoing Access, Monitored Access, and Stealth).
| • | Set the security level for Personal Firewall to Lockdown You can use the Lockdown security level to block all incoming and outgoing traffic between your PC and the Internet. |
| • | Unlock Personal Firewall You can unlock Personal Firewall instantly to allow traffic between your PC and the Internet, as well as any network its connected to. |