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first post- kernels and whatnot

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Well I signed up at the site after I seen they posted on of my howtos which I am thankful for. It was the one on the grsecurity patched kernel. I think it should help quite a few people as there are so many local root exploits out now and most distro's security and dev teams are doing nothing about it. I know I went in centos irc and they was like, "well the 2.6.9-34.0.2.EL kernel is patched against the prctl exploit but not the /proc exploit" They advised me to enable selinux but I was afraid it would interfere with my control panel software and scripts i have running. I asked when they would have the new kernel they said they were working on it. that was about a week ago now.

But as I found out there is no centos dev team, at least not that I know of. All they do is rip redhat's packages and that's is. Which isn't such a bad thing as you are getting an enterprise os for free.

I have tried all local root exploits lately against the latest grsecurity kernel and none worked. Which I do have /proc mounted as nosuid as a precaution. Next is to learn how to use the acl and other features of grsecurity.

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Learning The Linux File System

Before we get started, let’s avoid any confusion. There are two meanings to the term “File System” in the wonderful world of computing: First, there is the system of files and the directory structure that all of your data is stored in. Second, is the format scheme that is used to write data on mass storage devices like hard drives and SSD’s. We are going to be talking about the first kind of file system here because the average user will interact with his or her file system every time they use a computer, the format that data is written in on their storage devices is usually of little concern to them. The many different file systems that can be used on storage is really only interesting to hardware geeks and is best saved for another discussion. Now that that’s cleared up, we can press on. (Read the rest at Freedom Penguin)

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