Why AT&T blocked 4Chan
AT&T caused a flurry of fury when it blocked a server from the online forum, 4chan. We'll look at the DoS attack against 4Chan and how and why AT&T reacted.
The trouble started with neither AT&T nor 4Chan. A third-party attacker, possibly a rival forum, started a Denial of Service attack known as TCP SYN flooding, or SYN attack. First let's look at what's supposed to happen when you request a Web page.Your computer--let's call it HOME--sends a SYN request to the Web Server (SYN for synchronize sequence numbers). … Read more