Ever wondered how SELinux really works?

I found this link and book on G+ today.  It looks like a great primer for learning SELinux.  What is SELinux?  SELinux is a security layer used by several different Linux Distributions to isolate applications from the lower level parts of Linux.  It does this by blocking access to certain functions until you grant it access.  As long as the applications you grant access to aren't infected with a virus or have a security hole it helps alot.  If an approved application does have a problem it prevents it from going beyond the boundaries it is set for.

 

Yeah the book does a better job of explaining it.  So go check it out.

Brian Wagner

Brian started working with *nix in while a student at Kent State University in the early 90's. In 1995, as an E-Mail Administrator for Caliber Technology (now part of Fedex) he was tasked with administering Sendmail on both Slackware Linux and Solaris Systems. His first home install of Linux was MkLinux DR1 in 1996 on his 60 Mhz PowerMac. Since then Brian has been working and consulting on Linux and it's uses in the Enterprise to support everything from E-Mail, Firewalls, Web and File serving to custom cluster solutions and grid solutions. Brian has had the opportunity to work in both Fortune 500 companies and small 2 person organizations. This has given him the unique insight into the differences every size business faces.