tencent cloud

Overview

This document describes how to modify a security group rule. Rules are important because they protect you ECM instance from malicious attacks. For example, they can protect certain ports from being abused.

Prerequisites

You have created a security group and added at least one rule.
For information on how to create a security group and add security group rules to it, see Creating a Security Group and Adding Security Group Rules.

Directions

1. Log in to the ECM console and select Edge Network > Security Group on the left sidebar.
2. On the Security Group management page, click the ID/name of the target security group or click Modify Rule on the right to enter the security group rule page.
3. Use Inbound Rule and Outbound Rule to switch between inbound and outbound security group rules.
4. Find the target rule and click Edit on the right.
5. You can modify the rule as instructed in Rule Parameter Description and click Save after modification as shown below: