SELinux (Security-Enhanced Linux) is an implementation of a flexible mandatory, role-based access control architecture on Linux. It is primarily used to confine system processes.

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Which process/program create/write the file which I/O is redirected to?

When learning SELinux, I executed semanage fcontext -l > fcontext.txt under /root directory to dump massive fcontext information to a file. The funny result is: fcontext.txt was created, but the ...
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Apache won't start on Fedora 15

I can't get Apache to start on Fedora 15. I downloaded a project into /var/www/html and changed myself to the owner (recursively), though I don't think I changed any SELinux contexts or anything like ...
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Does SELinux provide enough extra security to be worth the hassle of learning/setting it up?

I recently installed Fedora 14 on my home pc and have been working on setting up different server related features such as apache, mysql, ftp, vpn, ssh, etc. I ran extremely quickly in to a barrier ...
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How can I configure SELinux when the semanage command isn't found?

I'm having a very hard time configuring SELinux to allow Sending mail. Looking into selinux documentation I've found I can manage ports via the semanage command, but the command can't be found. Is ...
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How do I configure SELinux to allow outbound connections from a CGI script?

I'm migrating to a new webserver which has SELinux set up (running Centos 5.5). I've got it set up so that it can execute CGI scripts with no problem, but some of the older Perl based scripts are ...
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fsarchiver error

I'm running the following fsarchiver command: $ fsarchiver restfs /tmp/backup/c0d0p2.fsa id=0,dest=/dev/cciss/c0d0p2 I get the following error: [errno=22, Invalid argument]: ...
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What to use to harden Linux box? Apparmor, SELinux, grsecurity, SMACK, chroot?

I am planning to go back to Linux as a Desktop machine. I would like to make it more secure. And try a few hardening techniques, especially since I plan to get my own server. What would be a good, ...
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SELinux denied access

I keep receiving this message from SELinux in a bug report. I am new to Linux, running Fedora 13 and I am learning as I go. Any advice on what this might be would be appreciated. Summary: SELinux is ...
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Vlc Media Problem in Fedora!

I am using Fedora 13 and my VLC media player is showing this problem for the past one week. How do i rectify this error. Summary: SELinux is preventing /usr/bin/vlc from loading ...
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Hide processes from other users based on groups (under Linux)?

Is it possible to configure process hiding for certain user groups under a linux system? For example: Users from group X should not see processes owned by users from group Y in ps/top or under /proc. ...