{"id":45861,"date":"2013-10-01T18:36:04","date_gmt":"2013-10-01T18:36:04","guid":{"rendered":"https:\/\/www.pcmatic.com\/blog\/?p=45861"},"modified":"2013-10-01T18:36:04","modified_gmt":"2013-10-01T18:36:04","slug":"how-does-a-firewall-protect-your-pc","status":"publish","type":"post","link":"https:\/\/www.pcmatic.com\/blog\/how-does-a-firewall-protect-your-pc\/","title":{"rendered":"How Does a Firewall Protect Your PC"},"content":{"rendered":"

<\/p>\n

How Does a Firewall Protect Your PC<\/h3>\n

By MakeTechEasier.com<\/p>\n

Learn more about how firewalls work to protect you and the ‘rules’ that govern the data that come and go – to and from your PC.–PC Pitstop.<\/i><\/font><\/p>\n

If asked what firewalls do, most people would answer that they keep you safe. While this isn\u2019t inaccurate, it\u2019s a sweeping oversimplification of the grand concept of the firewall itself. What it does to keep you safe and how it works are much more important concepts when understanding this seemingly enigmatic piece of software. You might have noticed that the firewall you\u2019re using has two sets of \u201crules\u201d: inbound and outbound. What do these things mean? Do you really need both of them? We\u2019ll discuss this and discover what you should know about these concepts in any operating system, whether you\u2019re using Windows, Linux, or Mac OS.<\/p>\n

What Do The Terms Inbound and Outbound Mean?<\/strong><\/p>\n

These terms are used to describe what they govern.<\/p>\n

Inbound rules govern what packets come into your computer from the internet. When a firewall is told to block inbound packets on a port or application, it will only block what comes into your computer through a specific port. If you have an inbound rule blocking an application, the firewall will first determine what port the application has open for packet transmission and block all incoming transmissions on that particular port.<\/p>\n

Outbound rules govern what exits your computer. When you apply an outbound rule, the same thinking applies as it would in an inbound rule, the only difference being that an outbound block would simply tell the firewall to kill any packets exiting your computer through a particular port.<\/p>\n

It\u2019s only logical to have inbound protection, since you don\u2019t want nasty packets coming into your computer. <\/p>\n

But do you need outbound protection?<\/a><\/strong><\/p>\n

This excerpt is shared with permission from maketecheasier.com.<\/p>\n","protected":false},"excerpt":{"rendered":"

\"firewalls\"<\/p>\n

Learn more about how firewalls work to protect you and the ‘rules’ that govern the data that come and go – to and from your PC.<\/p>\n","protected":false},"author":25,"featured_media":66012,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[20],"tags":[106],"class_list":["post-45861","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-maketecheasier-com","tag-firewall"],"yoast_head":"\nHow Does a Firewall Protect Your PC<\/title>\n<meta name=\"description\" content=\"How Does a Firewall Protect Your PC - 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