How do I enable SELinux on an NSP Flow Collector?

Purpose

Perform this procedure to enable SELinux on a station that hosts an NSP Flow Collector that is not collocated on a station with an NSP Flow Collector Controller.

Note: You must enable permissive mode on the NSP Flow Collector station before you can enable enforcing mode on the station.

Note: You require root user privileges on the NSP Flow Collector station.

Note: A leading # character in a command line represents the root user prompt, and is not to be included in a typed command.

Steps
 
1 

Log in as the root user on the NSP Flow Collector station.

2 

Open a console window.

3 

Enter the following:

# cd /opt/nsp/tools/selinux/tools/bin ↵

Check for required OS packages
 
4 

Enter the following:

# ./selinuxenable.sh -c ↵

Any missing OS packages required by SELinux are listed.

5 

If the message indicates that one or more required SELinux packages are not installed, enter the following:

# dnf -y install package_1 package_2 ... package_n ↵

where package_1 package_2 ... package_n are the names of the listed packages

The packages are installed.

Enable permissive mode
 
6 

# ./selinuxenable.sh -p ↵

The SELinux mode is set to permissive.

Apply SELinux labels
 
7 

Enter the following:

# /opt/nsp/tools/selinux/installer/bin/nsp-selinux-config.bash ↵

The script loads the required AVC policy, fc_nsp_domain.pp, and labels the files and directories named in the policy.

8 

Enter the following to back up the system audit logs:

# cp /var/log/audit/audit.log* backup_location ↵

where backup_location is a secure location on a separate station

9 

Enter the following to delete the system audit logs and thereby clear the SELinux AVC history:

# rm -f /var/log/audit/audit.log* ↵

10 

Stop the NSP Flow Collector.

  1. Enter the following to switch to the nsp user:

    # su - nsp ↵

  2. Enter the following:

    bash$ /opt/nsp/flow/fc/bin/flowCollector.bash stop ↵

    The NSP Flow Collector stops.

  3. Enter the following to switch back to the root user:

    bash$ su - ↵

11 

Enter the following:

# systemctl reboot ↵

The station reboots.

After the reboot, the SELinux labels take effect as SELinux runs in targeted permissive mode in the nsp_domain_t domain.

12 

After the reboot, enter the following to verify that the karaf processes are running in the nsp_domain_t domain:

# ps -aefZ | grep karaf | grep -v grep ↵

Process entries like the following are listed:

system_u:system_r:nsp_domain_t:s0 process_description

13 

If any listed entry does not include nsp_domain_t, contact technical support for assistance.

14 

Enter the following to verify that the policy file is loaded.

# semodule -l | egrep 'nsp' ↵

The policy file is listed, as shown below:

fc_nsp_domain

15 

If the fc_nsp_domain policy is not listed, contact technical support for assistance.

16 

Close the open console windows.

End of steps