- Gateway firewall represents rules applied at the perimeter firewall.
- Login to NSX Manager and select "Security" from Top Menu.
- Select "Gateway Firewall" from the left side Menu.
- Click on "Gateway Specific Rules".
- Select the respective Tier 0/Tier 1 router from field "Gateway".
- Click on "ADD POLICY" to add the gateway firewall policy.
- Change the Name of the Policy as per your need.
- Click on 3 dots on the newly created Policy and click "Add Rules" to create rules under the policy.
- Fill in the "source, destinations, services, profiles and applied to" fields.
- Choose "Allow, Drop or Reject" option under Action field.
- Now click on "PUBLISH" button on the top right corner.
- Rules will now be active.
- Multiple rules can be added and then published together at one time.
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