ARDP - Protocol Specification
was the only version of ARDP
publicly released until 1998.
supports extensions to Version 0;
the most important such extension is the
use of security contexts, which embed security into the transport
layer rather than having it at the application layer as is currently
the case when using TCP. The first formal release of an implementation
of ARDP protocol version 1 was in 1998, as ARDP Release 1.0.