+ - RHEL 5 certified at EAL4+ on IBM Servers
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ceswiedler
ceswiedler writes "James Morris blogs that Red Hat Enterprise Linux 5 has been certified at EAL4 on IBM's System p5 and eServer systems. "A lot of people thought it would be outright impossible to get an open source OS certified at this level," he writes. "Not only were they wrong, but we've done it in a way which makes it part of the mainline kernel, upstream userland, and integrated into standard distributions. It is not some out-dated, incompatible and outrageously expensive fork of the OS, as has historically been the case with trusted OSes.""