Let's say you have three houses, each in a different town. You want to pass a message from the first town to the third town, but you don't want anyone in the second town to see what you're saying. Here's how we can use an SSH tunnel to do that:

1. First, you need to go to the first house. You tell the people there you want to send a message, and they give you a piece of paper.
2. Then, you go to the second house. You give that piece of paper to the people there, and they write your message on a new piece of paper.
3. Without telling the people in the second house what you wrote, they put the new paper in an envelope and send it to the third house.
4. Only the people at the third house can open the envelope and see what you wrote.

This way, no one in the second town knows what you wrote, and the message stays secret!
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