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This article uses easy-to-understand examples to introduce what is the security group of the CVM. The content is very detailed. Interested friends can use it for reference. I hope it will be helpful to you.

The security group of a CVM is a logical grouping. You can add CVMs with the same network security isolation requirements in the same region to the same security group. Users can configure security group rules to achieve unified network access control.

Within the CVM security group, you can release the corresponding port number and IP access permission of the system, such as setting that only certain IP can access this server, or disable certain specified ports or FTP and ping features.

Security group is a kind of virtual firewall, which allows users to filter packets of traffic in and out of the cloud server, which is an important means of network security isolation. In addition to providing firewall-like features, using security groups has the following benefits:

1. Because of the virtual nature of security rules, it is not easy for intruders to choose a clear target to launch attacks like attacking physical firewalls.

2. Because the security rules are controlled remotely, the network rules will not be deleted by mistake, and everyone will be shielded out of the network segment.

3. You can easily access each CVM directly from the external network through SSH or other security links, because these accesses must comply with specific security rules, and the security achieved is similar to that of traditional solutions.

By deploying CVM security groups, users can achieve private network interconnection and resource copying between different CVMs in the same region. When the server is controlled by hackers, you can also modify the remote port to restrict login to IP.

In addition, the security group also supports remote connection and management of the server through the public network, and users can access your website through HTTP and HTTPS services.

So much for sharing what the security group of the CVM is. 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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