Ernst & Young reports that the use of a variety of techniques to secure distributed information systems that can be accessed over the public data network
has not kept pace with technology.
I talked to network managers responsible for a wide variety of networks, including a regional NSF Network serving several hundred locations throughout eight states, a public data network
from a telco, several large university networks, a professor of telecommunications at a major university, and a commercial bank.
EWP search requests are routed from our PCs over a Public Data Network
to DirectoryNet's National Gateway Center.
In our medium-size facilities, we have dedicated 9.6 kb/s lines into either Infonet or a national PDN (Public Data Network
Infonet also provides interoperability between InfoLAN and its own worldwide X.25 public data network
. Users can choose custom virtual, hybrid or private solutions with varying network topologies, geographic coverage and port speeds.
Addressing the need for broadband links, Bellcore Vice PResident Richard Caruso says he believes the answer lies in public data network
services, combining both frame relay and SMDS (switched multi-megabit data service) as complementary rather than competing options.
In 34 of these, where the local public data network
is based on Tymnet technology, enhanced data services similar to GNS will be available.