Imagine you have a secret toy that you want to send to your friend’s house without anyone else seeing it. So, you put the toy in a special box that only you and your friend know how to open. You then send that box through a busy playground, and even if other kids pick up the box and try to peek inside, they can’t, because they don’t know how to open it. When your friend gets the box, they know the secret way to open it, and they can take out the toy.
IPsec is like that special box. It’s a set of rules for the internet that helps computers send and receive information safely. When two computers use IPsec, they wrap their messages in a special protective layer, just like the toy in the special box. This means that the information can travel safely through the internet, and only the right computer can unwrap and read the message.
So, in simple terms, IPsec is a way for computers to send and receive information in a safe and secret way over the internet.