ZyXEL Communications ZYWALL USG ZLD 2.21 Support Notes page 83

Step 4. Switch to Configuration > Anti-X > Content Filter > General. Enable
Content Filter.
You can edit the Denied Access Message.
Make sure the Content Filter service is licensed.
Add an access policy for all the crew outside of office hours.
Schedule: none.
Address: select the address object LAN subnet.
Filter Profile: select the profile "allow_all_websites" created in the Profile
page.
User/Group: Any
Click on the Schedule icon to edit the schedule.
Choose Customization, and define your office hours.
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– ZyWALL USG Support Notes
83