Every week at HubSpot we hold a Tech Talk where one of our developers teaches something cool to the rest of the development team. A few weeks ago gave a brief overview of TCP/IP networking and I enjoyed it so much that I decided that I wanted to share it with more people.
Launch Academy in Boston was gracious enough to allow me to visit their headquarters, so I stopped by and gave the presentation to the students.
(Thanks to @HeroicEric for the picture.)
What a great crowd! The students at Launch Academy are a highly motivated group and I had a blast discussing How The Internet Works with them.