InfoSec Infrastructure PenTesting

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Hi there, I've seen a lot on penetration testing and a lot of information out there such as CEH and OffSec products are good, however, they focus mainly on penetration testing with machines/computers. So I was wondering if any of you know a good course or a place where can get good information on Infrastructure Penetration Testing, by that I mean things such as:

hacklabs.com/hacklabs-infrastructure/ (not such a good example)
mile2.com/penetration-testing-ethical-hacking/certified-penetration-testing-expert.html

I'm looking for stuff that has good infrastructure material (complex attack planning and of the sorts, cyberattacks and possibly cyberdefense material) and preferably that has experiences (lab stuff) one can do through virtual machines and things like that.

Thanks a lot people ;)