The Information Technology Professional's Resource Center

Although it has not been updated in quite some time, the Information Technology Professional's Resource Center ("ITPRC") web site remains a useful repository of some classic essential network information. You can find it at http://www.itprc.com

The ITPRC was created in 1999 to provide a one-stop-shop for IT professionals to find technical information relating to data networking. The predecessor of the ITPRC was "Networking References" which had been established in 1997. I believe ITPRC was created by Irwin Lazar, who is a technology consultant who has written extensively on various datacom and telecom topics.

The ITPRC web site includes an archive of a few ITPRC newsletters on topics like "A Very Brief Intro to QoS", "IPSec vs. MPLS-based VPNs" and "Secure Sockets Layer". But more importantly, there are various compendia of links to networking references organized by topic.

For example, the ITPRC guide to the "physical layer" provides links to over three dozen resouce sites covering the topics of Analog Modems, Cable Modems, Cabling, Channelized T1/T3/E1, DSL, SONET/SDH/DPT/RPR, and Industry Standards. See: http://www.itprc.com/physical.htm

Not all of the links work and some may require a little search work because the referenced external web pages have been moved or renamed. However, most of the links provide good starting places.