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This article introduces the relevant knowledge of "linux server security enhanced SSH configuration". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Today, we will mainly introduce the linux server security enhancement SSH, which is mainly divided into the following three aspects.

Disable SSH password authentication

Restrict root remote login

Restrict access to IPv4 or IPv6

Ssh configuration modification

Open / etc/ssh/sshd_config using the text editor of your choice and make sure the following lines:

Change it to this:

Next, restrict the SSH service to IPv4 or IPv6 by modifying the AddressFamily option. To change it here to use only IPv4, the configuration is as follows:

Restart the SSH service to enable changes.

$sudo systemctl restart sshd

Note: before restarting the SSH service, it is best to establish two active connections with the server. With these additional connections, you can fix all problems in the event of an error in restarting the SSH service.

This is the end of the content of "linux Server Security enhanced SSH configuration". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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