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doc-exports/docs/vpc/umn/en-us_topic_0051746700.html
Qin Ying, Fan 19f0993a37 VPC UMN 20231207 version 
Reviewed-by: Sarda, Priya <prsarda@noreply.gitea.eco.tsi-dev.otc-service.com>
Co-authored-by: Qin Ying, Fan <fanqinying@huawei.com>
Co-committed-by: Qin Ying, Fan <fanqinying@huawei.com>
2023-12-20 11:27:38 +00:00

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Associating Subnets with a Firewall

Scenarios

You can associate a firewall with a subnet to protect resources in the subnet.

Notes and Constraints

  • You can associate a firewall with multiple subnets. However, a subnet can only be associated with one firewall at a time.
  • After a firewall is associated with a subnet, the default firewall rules deny all traffic to and from the subnet until you add custom rules to allow traffic. For details, see Adding a Firewall Rule.

Procedure

  1. Log in to the management console.
  1. Click in the upper left corner and select the desired region and project.
  2. Click in the upper left corner and choose Network > Virtual Private Cloud.

    The Virtual Private Cloud page is displayed.

  3. In the navigation pane on the left, choose Access Control > Firewalls.
  4. Locate the target firewall and click its name to switch to the page showing details of that particular firewall.
  5. On the displayed page, click the Associated Subnets tab.
  6. On the Associated Subnets tab, click Associate.
  7. On the displayed page, select the subnets to be associated with the firewall, and click OK.

A subnet with a firewall associated will not be displayed on the page for you to select. If you want to associate such a subnet with another firewall, you must first disassociate the subnet from the original firewall. One-click subnet association and disassociation are not supported currently. A subnet can only be associated with one firewall.

Parent topic: Firewall