A firewall is a network security system that monitors and controls the incoming and outgoing network traffic based on predetermined firewall rules. Custom defined rules can be added and deleted.


Verify that Manager mode is selected in the NSX Manager user interface. See NSX Manager. If you do not see the Policy and Manager mode buttons, see Configure the User Interface Settings.


  1. Select Security > Distributed Firewall.
  2. Click the General tab for L3 rules or the Ethernet tab for L2 rules.
  3. Click the menu icon in the first column of the rule and select Delete Rule.
  4. Click Publish.