The CYMETRICX Service was Installed on a CentOS or RHEL server and it’s not showing in the CYMETRICX Online Assets

The CYMETRICX Service was Installed on a CentOS or RHEL server and it’s not showing in the CYMETRICX Online Assets

Description

The Customer install the Cymetricx agent on a CentOS/RHEL server and the Service is active (running) as show in Figure 1. But looking at service logs in the Cymetricx service status and the service session keeps restarting as denoted by:

  1. session opened for user root
  2. session closed for use root


Figure 1

Environment

A CentOS or a RedHat server.

 

Cause

SELinux Is enabled and in Enforcing mode by default on CentOS, RHEL servers.

SELinux allows or denies an interaction between a process and a system resource, and by default is blocking every service from running.

Every Service need SELinux to be disabled or permissive mode. For example Forcepoint agent requires SELinux to be disabled.

 

The command ausearch -m AVC,USER_AVC -ts recent displays SELinux logs, and as Figure 2 shows, the Cymetricx service is denied from interacting with the OS and from sending HTTPS requests to the Cymetricx server (notice dest 443 and denied).

 



Figure 2

Figure 3 shows the default SELinux status using the command sestatus

​


Figure 3

Recommended Actions

The recommended action is:

  1. Disable SELinux using the following command

sudo sed -i 's/enforcing/disabled/g' /etc/selinux/config

  1. Reboot the CentOS/RHEL server for the configuratio​n to take effect.

Additional Notes​​​​

The output of SELinux status command sestatus should be similar to Figure 4




Figure 4

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