One of my first network memories is from the late 1990's when I was studying for a master's degree at a technical university in Sweden. When working on some network assignment on the university's good old Sun SPARCstation computers, we realised that each lab computer had a public IP address and appeared to be directly connected to the public internet. Puzzled by this we went to see the guy responsible for the campus network, who explained that he did not see any need for a firewall: with so many skilled and inquisitive computer wizards studying at the university, he was convinced that the biggest threat to his environment came from within rather than from the internet - so why bother installing a firewall? 😂 ... View more