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Reduce Risk and Improve Security on IBM Mainframes: Volume 2 Mainframe Communication and Networking Security by Joe Welsh, Jan Thielmann, Vinodkumar Ramalingam, Vinicius Oliveira, Christopher Meyer, Uma Kumaraguru, Thomas Cosenza, Axel Buecker

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Mainframe network concepts and functions
In this chapter, we introduce mainframe network concepts and the latest networking technologies. We start with an overview of the network architecture and the various communication protocols, and then introduce the IBM z/OS Communication Server and its components. We also describe how the networking technology has evolved over the past years.
We take a look at the IBM Systems Network Architecture (SNA), including basic and Advanced Peer-to-Peer Networking (APPN). We then explain the TCP/IP implementation ...

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