# Associating a Zone with a Filter

You can use either of the following methods to associate a Zone with a filter.

#### Method 1: Associating a Filter on the Zone Page

1. Choose Defense > Policy Settings > Zone.
2. Click of the Zone.
3. Click the Filter tab.
4. Click .
5. Select the filter to be associated and click OK.

   The filter takes effect only after the Zone is deployed.

#### Method 2: Associating a Zone on the Filter Page

1. Choose Defense > Policy Settings > Filter > Zone Filter.
2. Click in the Operation column.
3. Click the Add Device tab.
4. Click , select a Zone, and click OK.

   Only the Zones whose Deployment Status is Succeeded are displayed on the page. Check whether the Zone to be associated is successfully deployed.

5. Click Deploy to deploy the filter to the AntiDDoS1820-N.

Parent topic: Configuring a Zone Filter (AntiDDoS1820-N/Netflow Detection)

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