How IPsec works, it’s components and purpose

What is IPsec?

IPsec is a suite of protocols that are used to secure internet communications—in fact, the name itself is an abbreviation for Internet Protocol Security.  

IPsec was first codified in the '90s, spurred on by the dawning realization that internet traffic needed to be protected: the early internet mostly connected secured government and university buildings, and the internet protocol (IP) that defined how communications online worked sent information whizzing around unsecured and unencrypted.

IPsec was designed to create a universal standard for internet security and enabled some of the first truly secure internet connections. IPsec isn't the most common internet security protocol you'll use today, but it still has a vital role to play in securing internet communications.

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