NIS 2008: how to "lockdown" firewall

I'm considering migrating from Zone Alarm to NIS 2008. One great feature in ZA is the ability to "lockdown" the firewall with two mouse clicks. By "lockdown" the firewall I mean completely turn off (and later turn on) the flow of data into and out of the network port. In ZA it's a snap to do this from the ZA icon in the system tray. This is the software equivalent of unplugging the network cable from the ethernet port.

 

I can't figure out a way - any way at all - to "lockdown" the NIS firewall. Is this possible?