{"id":39063,"date":"2016-11-01T12:54:32","date_gmt":"2016-11-01T18:54:32","guid":{"rendered":"http:\/\/kimbuca.wordpress.com\/?p=610"},"modified":"2016-11-01T12:55:42","modified_gmt":"2016-11-01T18:55:42","slug":"about-firewalls","status":"publish","type":"post","link":"https:\/\/kenscourses.com\/tc2027fall2016\/syndicated\/about-firewalls\/","title":{"rendered":"About Firewalls"},"content":{"rendered":"

--Originally published at TC2027 \u2013 Will It Blog?<\/a><\/a><\/em>
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Everyone has heard of this term at some point. Whenever a program installed in your computer doesn’t work, one of the first “recommendation” or quick solution is to turn off the firewall. This is super risky because the firewall is the first line of defense an OS has.<\/p>\n

Firewalls stands between the computer or networks in which the machine resides, and shields it from the dangers on the internet. Sometimes it is also referred as a Containment device.There are two kinds of firewall: it can either be a software program running on a computer or it can be build into a hardware device such as a wireless base station or a router hub (like the one below).<\/p>\n

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The way\u00a0 a firewall works is by dividing the network in various zones and regulating the activity inside it. This is basically just avoiding the issue with non-authorized traffic so it can not enter or leave a certain zone. Even more concise a firewall lets you take control of the flow of data.<\/p>\n

But a firewalls functionality doesn’t just limits itself to block access to non-authorized packets. It has two mayor roles: prevent and detect.<\/p>\n

Prevents in the way that it filters the traffic in accordance to a security directive. Common filtering criteria comes from the following:<\/p>\n