V-275610

Discussion

Firewalls protect computers from network attacks by blocking or limiting access to open network ports. Application firewalls limit which applications are allowed to communicate over the network.

Check Content

Verify the Uncomplicated Firewall (ufw) is enabled on the system with the following command:  
  
     $ systemctl status ufw.service | grep -i "active:" 
     Active: active (exited) since Thu 2022-12-25 00:00:01 NZTD; 365 days 11h ago 
  
If "ufw.service" is "inactive", this is a finding.  
  
If the ufw is not installed, ask the system administrator if another application firewall is installed. If no application firewall is installed, this is a finding.