(1) A computer that has been implanted with a daemon that puts it under the control of a malicious hacker without the knowledge of the computer owner. Zombies are used by malicious hackers to launch DoS attacks. The hacker sends commands to the zombie through an open port. On command, the zombie computer sends an enormous amount of packets of useless information to a targeted Web site in order to clog the site’s routers and keep legitimate users from gaining access to the site. The traffic sent to the Web site is confusing and therefore the computer receiving the data spends time and resources trying to understand the influx of data that has been transmitted by the zombies. Compared to programs such as viruses or worms that can eradicate or steal information, zombies are relatively benign as they temporarily cripple Web sites by flooding them with information and do not compromise the site’s data. Such prominent sites as Yahoo!, Amazon and CNN.com were brought down in 2000 by zombie DoS attacks.
Zombies are also referred to as zombie ants.
(2) In UNIX operating systems, a zombie is a “child” program that was started by a “parent” program but then abandoned by the parent.
The word zone is used to mean any area that is separated from another, or is distinguished from another based on distinctive circumstances. In computers, networking and the Internet, the meaning of the word zone changes depending on the specific environment. Some common meanings of the word zone include the following: Domain Name System (DNS): […]
- zone file
A file on a root server that contains domain name registration information. Zone files contain information necessary to resolve domain names to IP addresses and contains all information related to one domain. Zone files are also called master files.
- zoned CLV
Short for zoned constant linear velocity, a type of CLV data read/write method that separates a CD or DVD compact disk into different fixed-speed zones and changes the speed of rotation for each zone instead of across the entire disk.
- zoned-bit recording
)A method of recording data on a hard disk drive whereby the sectors per track on the drive are not consistent across the platter. In general, tracks closest to the center have fewer sectors than tracks toward the outside of the platter where the tracks are larger and can fit more sectors. Though the platter […]
(zōn´ing) (n.) The process of allocating resources in a SAN to load balance the devices connected to the network. Zoning allows the network administrator to separate the SAN into units and allocate storage to those units based on need. Zoning protects the SAN system from such threats as viruses, data corruption and malicious hackers as […]