You can turn on SELinux in Redhat or CentOS Linux over a remote SSH session by following these steps:
- Connect to your remote server using SSH.
- Open the
/etc/selinux/config
file using a text editor. You will need root privileges to edit this file. For example:
sudo vi /etc/selinux/config
- Find the following line:
SELINUX=enforcing
This line sets SELinux to enforcing mode. If it is already set to enforcing, you can skip to step 4.
- If the line is set to
permissive
, change it toenforcing
to enable SELinux. For example:
SELINUX=enforcing
- Save and close the file.
- Reboot your system to apply the changes:
sudo reboot
Once your system reboots, SELinux will be enabled and set to enforcing mode. To verify that SELinux is running, you can use the following command:
sestatus
This will display the current SELinux status and mode.
Note that enabling SELinux may cause some applications to stop working or behave unexpectedly. If you encounter issues after enabling SELinux, you may need to adjust the SELinux policies or disable SELinux altogether.