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CEH Term T U V W X Z

Certified Ethical Hacker Terms & Definitions - T U V W X Z - info tech

A remote authentication protocol that is used to communicate with an authentication server commonly used in Unix networks. TACAS (Terminal Access Controller Access-Control System)
The software product or computer system that is the subject of an evaluation. Target of Engagement (TOE)
A network protocol used for remote connections to a server. Provides bidirectional communication using a virtual terminal connection. Telnet
A security protocol used in IEEE 802.11i to replace WEP without the requirement to replace legacy hardware. TKIP (Temporal Key Integrity Protocol)
Any circumstance or event with the potential to adversely impact an organizations operations, assets or individuals through an information system. Threat
A three-step process computers execute to negotiate a connection with each other. The steps are: SYN, SYN/ACK, ACK. Three-Way (TCP) Handshake
A group of people, gathered together by a business entity, working to address a specific problem or goal. Tiger Team
A program designed to execute at a specific time to release malicious code onto a computer system or network. Time Bomb
A limit on the amount of time or number of iterations or transmissions in computer and network technology a packet can experience before it will be discarded. TTL (Time To Live)
Recording the time, normally in a log file, when an event happens or when information is created or modified. Timestamping
A small Trojan program that listens or port 777. Tini
A utility that traces a packet from your computer to an Internet host. It shows the number of hops and how long each packet requires to complete the hop. Traceroute
A connection-oriented, layer 4 protocol for transporting data over network segments. It's considered reliable because it guarantees delivery and proper reordering of packets. Used for long haul traffic on the internet. TCP (Transmission Control Protocol)
A standard for ecrypting email, web pages and other stream-oriented information transmitted over the Internet. TLS (Transport Layer Security)
A non-self-replicating type of malware that appears to have a useful purpose but instead gives unathorized access to the users computer system. Trojan Horse
The set of all hardware, firmware and software components critical to a systems IT security. TCB (Trusted Computer Base)
A U.S. Department of Defense (DoD) standard that sets basic requirements for assessing the effectiveness of computer security controls built into a computer system. TCSEC (Trusted Computer System Evaluation Criteria)
The act of using numerous electronic serial numbers on a cell phone until a valid number is located. Tumbling
A point-to-point connection between two endpoints created to exchange data. Typically it's either an encrypted connection or a connection using a protocol in a method for wihch it was not designed. Tunnel
Transmitting one protocol encapsulated inside another protocol. Tunneling
A self-replicating malicious program that attempts installation beneath antivirus sofware by directly intercepting the interrupt handlers of the operating system to evade detection. Tunneling Virus
An international encoding standard, working within multiple languages and scripts, that represents each letter, digit, or symbol with a unique numeric value that applies across different platforms. Unicode
A string that represents the location of a web resouce (i.e., a website address). URL (Uniform Resouce Locator)
A connectionless, layer 4 transport protocol. Faster that TCP but offers no reliability. It's on a best effort basis. Used where a small amount of packet loss is acceptable, such as streaming video and audio. UDP (User Datagram Protocol)
Devices, connected to multiple switches and routers, grouped 'logically' into broadcast domains regardless of there physical location. VLAN (Virtual Local Area Network)
A technology that establishes a tunnel to create a private, dedicated, leased-line network over the Internet. The data is encrypted so it's readable only by the sender and receiver. Typically used by employees to remotely connect to the company network. VPN (Virtual Private Network)
A malicious computer program with self-replication capabilities that attaches to a file and moves with the host from one computer to another. Virus
An e-mail message warning users of a nonexistent virus and encouraging them to pass on the message to other users. Virus Hoax
A weakness in an information system or its security controls that could be exploited or triggered by a threat source. Vulnerability
A formal description and evaluation of the vulnerabilities in an information system. Vulnerability Assessment
The cyclical practice of identifying, classifying, remediating and mitigating vulnerabilities. Vulnerability Management
Sending packets or requests to another system to gain information to be used to identify weaknesses and protect the system from attacks. Vulnerability Scanning
Drawing symbols in public places to alert other to an open Wi-Fi network. Information may include the SSIDs, administrative passwords to APs, and other information. War Chalking
The act of dialing all numbers within an organization to discover open modems. War Dialing
The act of searching for Wi-Fi wireless networks by a person in a moving vehicle, using a portable device. War Driving
An environmentally conditioned workspace partially equipped with IT and telecommunications equipment to support relocated IT operations in the event of a significant disruption. Warm Site
A program designed to browse websites in an automated, methodical manner. Sometimes these programs are used to harvest information from websites, such as e-mail addresses. Web Spider
A penetration testing method where the attacker knows all the information about the intended target. It is designed to simulate an attack by an insider. White Box Testing
A query and response protocol widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address, or an autonomous system. Whois
Two or more LANs connected by a high-speed line across a large geographical area. WAN (Wide Area Network)
A security protocol for wireless local area networks defined in the 802.11b standard, intended to provide the same level of security as a wired LAN. WEP (Wired Equivalent Privacy)
Provides data encryption for IEEE 802.11 wireless networks so data can only be decrypted by the intended recipients. WPA (Wi-Fi Protected Access)
Monitoring of telephone or Internet conversations, typically by covert meams. Wiretapping
A self-replicating, self-propagating, self-contained program that uses networking mechanisms to spread itself. Worm
Software used to bind a Trojan and a legitimate program together so the Trojan will be installed when the legitimate program is executed. Wrapper
An agreement between the penetration tester and the client detailing the activities the tester is permitted to perform. Written Authorization
A mathematical operation requiring two binary inputs: If the inputs match, the output is a 0, otherwise it is a 1. XOR Operation
A Windows based GUI version of nmap. Zenmap
A computer system that performs tasks dictated by an attacker from a remote location. Zombie
Created by: infotech