How to turn on Firewall in Plesk Login to Plesk Click on Tools & Settings. Click on Firewall in the main section of Security. The system will be on Switch off, press Switch on at all. 85Private Hosting (Plesk)Related Knowledge Base Posts -How to Access File Manager and Upload the Local Project File on the Plesk Server?How to add a Domain in Plesk Server?Adjust PHP Version and Enable Error Plesk?