As the firewall rule base grows and mixes, it begins to affect firewall performance and it is difficult to maintain and can hide real security risks. Also, standards such as PCI-DSS require cleaning up unused firewall rules and objects.
Your firewall is an essential part of your network security because it is the first line of protection against online attackers. Configuring a firewall can be a challenging task, but breaking it down into smaller tasks can make it much easier to handle.
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