Description: A security zone is a collection of one or more network segments requiring the regulation of inbound and outbound traffic through policies. Security zones are logical entities to which one or more interfaces are bound. You can define multiple security zones as per your network requirements.
Lab Exercise explains to configure security zones and binding interfaces to appropriate zones
1. Assign interfaces to the security zones
user@R1#set security zones security-zone trust interfaces ge-0/0/0
user@R1#set security zones security-zone untrust interfaces ge-0/0/1