This topic describes how to add IPv6 security group rules to an Elastic Compute Service (ECS) instance. IPv4 and IPv6 addresses are independent of each other. If the current security group rules do not apply to your IPv6 services, you must configure security group rules for the ECS instances to regulate communication with IPv6 addresses.


  1. Log on to the ECS console.
  2. In the left-side navigation pane, choose Network & Security > Security Groups.
  3. In the top navigation bar, select a region.
  4. Find the security group and click Add Rules in the Actions column.
  5. Click Add Rule.
  6. Configure security group rules.

    Enter the authorized IPv6 CIDR block in the Authorization Object field. For example, enter ::/0 to authorize all IPv6 addresses.

    For more information about configuration operations and common scenarios of security group rules, see Add security group rules and Scenarios for security groups.