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I just want to understand some concepts related to the firewall. Is there any difference between saying firewall policies and firewall rules? Can we say a firewall includes a set of policies each of which defines a set of special rules?

Thank you.

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Though there are (as far as I know) no strict definitions, you say that policies are the abstract, high level definitions of what traffic should and shouldn't be allowed. Firewall rules are the translation of policies into practical configuration.

For example: the policy "allow only management traffic from trusted networks" is translated into rules which allow traffic from 192.2.0.0/24 to TCP/22 and from 192.2.100.0/24 to TCP/3389.

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Personally, I would agree with your definitions, but, unfortunately, different vendors have different definitions since there is no standard. I have seen firewall documentation which basically equates policy with rule, and I guess that does make sense for firewalls which can only have one policy by your definition.

  • Yes I also agree with you. It is a vender-dependent definition. Thank you – Mide Jan 16 '16 at 22:26

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