4 ms·

This would only work on connectionless protocols, such as UDP. UDP offers no message reliability and relies on the source address to respond. This is how DNS am

This would only work on connectionless protocols, such as UDP. UDP offers no message reliability and relies on the source address to respond. This is how DNS amplification attacks work, as the main protocol of DNS is UDP. Whereas HTTP goes over TCP which is a connection-oriented protocol. TCP offers message integrity by going back and forth between client and server multiple times to verify the message was retrieved successfully. Without a valid source address the 3-Way TCP Handshake used to establish the connection cannot succeed.

hnha 13y ago
thank you, I always wondered but never asked.
- AYBABTME 13y ago
  Coursera had a great Computer Network course. I think you can still register and download the videos: https://class.coursera.org/comnetworks-002/ https://class.coursera.org/comnetworks-002/
tylerkahn 13y ago
Oh right, duh.