Platform hardening

These measures harden all Forcepoint V Series, X Series, and Virtual Appliances:

• CentOS operating system -- Base operating system, Forcepoint Email Security container, and Web protection containers (Web, Proxy, Network Agent).
  • Appliances version 8.5.0: CentOS 7.4
  • Appliances version 8.5.3: CentOS 7.5
  • Appliances version 8.5.4: CentOS 7.7
  • Appliances version 8.5.5: CentOS 7.9
  • Appliances version 8.5.6: CentOS 7.9
• SELinux enabled (not enforcing)
• Apache Tomcat removed