Make sure your firewall is as pinhole free as possible while still being able to do what you want. The more pinholes you have in your firewall the more likely it is for a nasty little Internet bug to crawl in and wreak havoc in your network of computers. The trick is to only create enough rules to make the Internet do what you want it to do. The more rules you create the more pinholes you get. The problem with a firewall rule is that is creates a tiny pinhole in your firewall. The firewall will continue to assume everything else is not safe until you tell it otherwise. These rules tell the firewall what you consider safe. The real dilemma is to create a firewall that is safe and has the ability to use the Internet. Most, if not all, of us want to use the Internet. Your computer is extremely safe in this mode but is completely useless if you plan on using the Internet. In this condition absolutely nothing can get in to your network and nothing can get out. A firewall can block all traffic both in and out. You can make a firewall as safe as you want.
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A firewall also protects against malicious software that has been installed on your computer by a hacker. It prevents people from getting into your local network and causing damage or taking control of your computer.
In the computer world a firewall does much the same thing. A physical firewall is a wall designed to stop the spread of fire from building to building. The question is how do you protect yourself? The answer is with a firewall. With a two way connection comes the possibility of malicious intent. You ask for something, say your email, and you get a response in return, your email. When you use the Internet it is always a two way connection. J(Last Updated: September 17, 2021) | Reading Time: 5 minutes
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