Hardening CentOS Image

Hello,

Not sure where to start here, but I have been tasked with hardening our CentOS images which currently install from Cobbler and vSphere ISOs. I can only imagine this is a RHCE requirement but I don't see it in my book.

Looking to remove a few packages and add some of our own that we use in advance. I guess I am looking for the Linux equiv of sysprep.

Anyone aware of a walk through on this process?

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timme

A good resource would be the Red Hat Enterprise Linux Security Guide available on the Red Hat site.

It covers most of securing a Server.

UnixGuy

I'm not sure if this is a certification related question, but generally speaking:

Start with minimal installation, and add packages later as per requirements. Disable all the unnecessary services and implement a tight iptables firewall (which is not a trivial task). Make sure you install updates regularly and systematically.

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