Protections are rules that:
- Help your network manage your brand.
- Avoid competing advertisers from showing ads in the same context.
- Help your network determine which inventory (if any) you want to make available to the Open Auction.
There are different rules under "Protections" for each of these purposes. For each rule under "Protections", you can add targeting to tell Ad Manager where to apply that rule. This targeting includes the ability to target ad units.
From the list of ad units under Inventory Ad units, you can view any rules under "Protections" that apply to the ad unit. Find the "Protections" column and then click View Protections. Ad Manager takes you to a list of Protection rules that apply to that ad unit.