Apply a description to the public zone.

vyatta@R1# set security zone-policy zone public description “PUBLIC ZONE”

Apply the interface to the zone.

vyatta@R1# set security zone-policy zone public interface dp0p1p4

Apply the to_public rule set to the private zone.

vyatta@R1# set security zone-policy zone public to public firewall to_public

Commit the configuration.

vyatta@R1# commit

Show the policy configuration for the public zone.

vyatta@R1# show security zone-policy zone public

description "PUBLIC ZONE"
    interface dp0p160p1
    interface dmz
    interface dp0p1p4
    to outputzonetofiltertraffic {
        firewall to_public
    }