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This article is a detailed introduction to "Linux file system, services, firewall, SELINUX what is used", detailed content, clear steps, details properly handled, I hope this article "Linux file system, services, firewall, SELINUX what is used" article can help you solve doubts, the following with the small series of ideas slowly in-depth, together to learn new knowledge bar.

1 firewall # firewall-cmd …

When you access the server, you first go through the firewall.

2 service # vim /etc/*.conf

When you access Baidu disk services, you can only access your own Baidu disk.

3 filesystem # chown, chmod, setfacl

When we save files on Baidu disk, you need to have local write permissions on the server.

4 selinux # vim /etc/selinux/config

Selinux is a security enhancement that adds another layer of security to the three above.

Selinux security enhancements on ports, we call them port labels. When configuring the apache service, we modified the default service port and the service failed to start. To add the port number you want to use to the semanage port label, the service should start properly.

Selinux's security enhancement on the service, we call it bealoon Boolean. When configuring the samba service, you must turn on the samba_enable_home_dirs boolean if you want to share users 'home directories as well. Users can access their own home directory shares.

Selinux's security enhancement on the file system, we call it fContext Context. When configuring samba services, if you share a top-level directory, such as "/common". For this folder to have read and write permissions, you must change the folder context to "samba_share_t."

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