B.4. Project 1: Firewall and proxy server
StoreCompany's desire to add its catalog to the Internet sparked an audit into security and feasibility of the project. A firewall and demilitarized zone would be needed to separate the zSeries from the Internet. The conclusion was that infrastructure servers could be located as Linux guests under z/VM on the mainframe. This would have three desirable results: a standard setup for all guests, some savings in actual hardware, and a fairly simple project for introducing Linux on the mainframe into the production environment.
The team doing the Linux infrastructure work was composed of both mainframe and UNIX/Linux people. The infrastructure work went well. It was fast (75 days) and it was on budget. After ...
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