8. New transport-layer protocols will work across the
Internet. -- IP was designed to support new transport
protocols underneath it, but increasingly this isn't
true, Thaler says. Most NATs and firewalls only allow
Transmission Control Protocol (TCP) and User Datagram
Protocol (UDP) for transporting packets. Newer Web-based
applications only operate over Hypertext Transfer
Protocol (HTTP).
Huh? This is a terrible example, since HTTP is on top of TCP. Also, isn't IP usually represented/considered as "the bottom" with TCP, HTTP, Comet, etc (to name a few) layered ON TOP of it?