What is MAC, RBAC, NBAC and trusted agent ?

What is security of your data and computer operation?

MAC mandatory access control(minimum number of security systems)
RBAC Role based access control(SELinux)
NBAC name based access control(AppArmor)
Trusted agent the website you want to link to(Bank of America)

Access control started with password, on different levels of your software on your hardware. Users in groups are security levels below administrators. Then, mandatory access control has to be installed. That could be role base access control depending on your title and responsibility. On a lower level of access control you have name based access control which has no role responsibility, or just any employee in a group.

This access control is internal on intranet. For Internet enterprise environment, you need to connect to trusted agent. This is established in firewall of IP address and cookies installation. Currently mutual access control is the rage. Your cookies and data transfer is done by 128 bit encryption key sending out; and the trusted agent send in data by 10 bit encrypted key.

The real hacking is done by ctty and breaking(ascii code 02) of your operating application to reach your hdd for hacking. So, new breed of HAS(hardware assisted security) such as vPro in Intel cpus are still in its infancy. Linux has built in discretionary access control(root privilege) is not sufficient at all.

What we have is rudimentary security principles. How you interwove them in your application is not sufficient; if ctty can break your application in operation. Most servers have to defeat the break instruction to stop your application to gain access to a curser. Then your hardware has to have zero wait state to keep ctty in console from jamming in to replace your keyboard for hacking on your hdd.

So, Intel hopes that virtual protection hardware circuit will be useful to reject keyboard replacement from far away hackers, maybe using frequency(clock) synchronization or realtime packet synchronization and blocking propagation delayed data from distant sources to prevent buffer overflow error to break application in use for hacking.

Security in IE6.0 is now functioning in synchronized ATM(asychronous transfer mode); which if jammed will stop data transfer, resulting in a denial of website availability. Hackers are thus stopped, using bios not yet vPro.