Is it possible to reject, drop or modify the loopback address using firewalld?

Solution Verified - Updated -

Issue

  • Red Hat Enterprise Linux 8 is not affected. The firewalld rules in the diagnostic section do work for RHEL8.
  • How to manage the loopback interface in RHEL 7 using firewalld?
  • How to reject, drop or modify the loopback address in RHEL 7 using firewalld?

Environment

  • Red Hat Enterprise Linux 7 (RHEL 7).
  • FirewallD.

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