mirror of
https://github.com/The-Art-of-Hacking/h4cker
synced 2024-11-25 04:10:17 +00:00
53 lines
1.3 KiB
Markdown
53 lines
1.3 KiB
Markdown
|
# SELinux in Ubuntu Lab
|
||
|
|
|
||
|
|
The following can be completed with Ubuntu 22.x or later.
|
||
|
|
|
||
|
|
## Installing and Enabling SELinux
|
||
|
|
The first step is to install SELinux. Start by opening a command line terminal and installing the necessary packages with the apt commands below.
|
||
|
|
```
|
||
|
|
$sudo apt update
|
||
|
|
$ sudo apt install policycoreutils selinux-utils selinux-basics
|
||
|
|
```
|
||
|
|
### Activate SELinux
|
||
|
|
Execute the following command with root permissions to enable SELinux on the system.
|
||
|
|
```
|
||
|
|
$ sudo selinux-activate
|
||
|
|
```
|
||
|
|
|
||
|
|
## Enforcing Mode
|
||
|
|
Set SELinux to enforcing mode:
|
||
|
|
```
|
||
|
|
$ sudo selinux-config-enforcing
|
||
|
|
```
|
||
|
|
|
||
|
|
Reboot your system. The relabelling will be triggered after you reboot your system. When finished the system will reboot one more time automatically.
|
||
|
|
```
|
||
|
|
$ reboot
|
||
|
|
|
||
|
|
```
|
||
|
|
Check SELinux status with the following command to ensure that it is in enforcing mode.
|
||
|
|
$ sestatus
|
||
|
|
|
||
|
|
|
||
|
|
## Disabling SELinux
|
||
|
|
To disable SELinux open up the `/etc/selinux/config` configuration file and change the following line:
|
||
|
|
|
||
|
|
FROM:
|
||
|
|
```
|
||
|
|
SELINUX=enforcing
|
||
|
|
```
|
||
|
|
TO:
|
||
|
|
```
|
||
|
|
SELINUX=disabled
|
||
|
|
```
|
||
|
|
Reboot your system for the changes to take effect.
|
||
|
|
|
||
|
|
Alternatively you can temporarily put SELinux into permissive mode with the following command.
|
||
|
|
```
|
||
|
|
$ sudo setenforce 0
|
||
|
|
```
|
||
|
|
Note this change will not be persistent (i.e., survive a reboot). It will go back to enforcing later. To enable SELinux again just execute:
|
||
|
|
```
|
||
|
|
$ sudo setenforce 1
|
||
|
|
```
|