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This article will explain in detail whether the CVM needs to be restarted after modifying the security group. The content of the article is of high quality, so the editor will share it with you for reference. I hope you will have some understanding of the relevant knowledge after reading this article.

No, the CVM will take effect soon after the security group configuration is modified, and there is usually no need to restart the server.

Security group is a kind of virtual firewall with stateful packet filtering function, which is used to set network access control for instances such as cloud servers, load balancers and databases. It is an important means of network security isolation.

Users can configure security group rules to allow or prohibit the access of instances in a security group to public or private networks: a security group is a logical grouping. You can add basic network CVM or ENI instances with the same network security isolation requirements in the same region to the same security group.

You can use the security group policy to securely filter the inbound and outbound traffic of CVM instances, which can be basic network CVM or elastic Nic instances. The CVM can modify the rules of the security group at any time. The new rules will take effect immediately.

After the CVM is leased, we can configure the security group associated with the CVM instance for the first time, or modify the security group rules, modify or copy the security group, or manage the corresponding instance through the security group page of the console.

Some cloud service providers also provide developer tools for security groups. Users can use Cloud API to complete security group operations, configuration management of security groups and CVM instances, etc.

For example, the security group can be applied to the elastic cloud of all computer rooms without regional restrictions. In the security group list interface, you can query security group information based on IP address, set security group rules, or deploy, disable and delete security groups.

This is enough about whether you need to restart the CVM after modifying the security group. I hope the above content can be helpful to you and learn more. If you think the article is good, you can share it for more people to see.

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