"You might think the only thing you need to do to prevent that would be to use your desktop operating system's firewall. Although that's a great start, you need more protection. One of the best ways to protect your home network is to deploy a dedicated firewall, and there are a few ways you can do that. Also: How to secure your home and office network: The best DNS blockers and firewalls"
"The big 'why' of dedicated firewalls There are two main reasons why you would want to deploy a dedicated firewall to your home network: Heightened security More flexibility Those two reasons alone should be enough to convince you. Although the heightened security is the big ticket item, do not disregard the flexibility aspect. Consider this: with your operating system's built-in firewall, you are limited to what the developers imagine to be all you need for protection."
Network security is essential to prevent data theft, identity loss, ransomware, and financial compromise. Desktop operating system firewalls provide a useful baseline but can be limited in features and protection. Deploying a dedicated firewall on a home network increases security and adds flexibility for automation, grouping, diagnostics, and categorization. Dedicated firewalls enable capabilities that simple OS firewalls do not, allowing more granular control and defensive measures. Options to add a dedicated firewall include several methods, with some free solutions and at least one paid alternative.
Read at ZDNET
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