The jail mechanism is an implementation of FreeBSD 's OS-level virtualisation that allows system administrators to partition a FreeBSD -derived computer system into several independent mini-systems called jails , all sharing the same kernel, with very little overhead . It is implemented through a system call, jail 2 ,  as well as a userland utility, jail 8 ,  plus, depending on the system, a number of other utilities. Woolworth desire to establish a clean, clear-cut separation between their own services and those of their customers, mainly for security and ease of administration jail 8. Instead of adding a new layer of fine-grained configuration options, the solution adopted by Poul-Henning Kamp was to compartmentalize the system — both its files and its resources — in such a way that only the right people are given access to the right compartments. Jails were first introduced in FreeBSD version 4. Unlike chroot jail , which restricts processes to a particular view of the filesystem , the FreeBSD jail mechanism restricts the activities of a process in a jail with respect to the rest of the system.
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January 15, By admin Hepsia Control Panel. Introduced to our web hosting platform more than a year ago, the Jail Host functionality has brought a new dimension to the concept of site security. Now the Jail Host option is enabled by default for all newly created hosts to double protect them from intruders. Even though security solutions are getting more and more reliable, hackers seem to always be one step ahead of the game. The truth is that no universal painkiller for hack attacks has been invented yet. If an intruder does manage to break into a website, if Jail Host is enabled, they will not be able to move to another host and spread their malicious activity. This prevents intruders from using the host as a doorway to the rest of the system in the event of an attack. The tight encapsulation works at the Operating System level, which guarantees its efficiency in all possible hacking scenarios. By ensuring a segmental level of protection, the Jail Host feature offers an innovative approach to keeping a hosting environment clean of smart intruders. This way, even if one of your hosts succumbs to an attack, you will have the rest of your content fully intact.
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