Iptables Tutorial 1.2.2

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• Accept - To accept a packet and to let it through the firewall rules. This is the opposite of the drop or deny targets, as well as the reject target.

• Policy - There are two kinds of policies that we speak about most of the time when implementing a firewall. First we have the chain policies, which tells the firewall implementation the default behaviour to take on a packet if there was no rule that matched it. This is the main usage of the word that we will use in this book. The second type of policy is the security policy that we may have written documentation on, for example for the whole company or for this specific network segment. Security policies are very good documents to have thought through properly and to study properly before starting to actually implement the firewall.


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