The plenum is hidden space within a building which is used for HVAC (Heating, Ventilation, and Air Conditioning) and to run cables. Plenum space is normally above a suspended ceiling or under a raised floor. Buildings without plenum spaces will have cabling and HVAC ducts within plain view. The plenum space is normally used to …
A codec (Coder/Decoder) converts analog signals to a digital bitstream, and another identical codec at the far end of the communication converts the digital bitstream back into an analog signal. In the VoIP world, codecs are used to encode voice for transmission across IP networks. Codecs for VoIP use are also referred to as vocoders, …
The easiest way to find DNS servers is by using the ‘nslookup’ tool. Start nslookup Set the search type to NS. This tells nslookup to search for nameservers Finally, enter the domain name for the nameservers being searched for Here are some search examples for the most popular searches: Finding the Lincsat DNS Servers $ …
Honey monkeys are a new way of detecting malicious codes from websites that try to exploit certain vulnerabilities of Internet browsers. The honey monkey system works as an automated web/internet patrol system that is designed to detect harmful materials in the Internet, to be able to come up with solutions, and to catch the people …
Packet sniffing is listening (with software) to the raw network device for interesting packets. When the software sees a packet that fits certain criteria, it logs it to a file. The most common criterion for an interesting packet is one that contains words like “login” or “password.” To packet sniff, obtain or code a packet …
The majority of non-computer professionals think of a DMZ as the strip of land that serves as the buffer between North and South Korea along the 39th parallel north created as part of the Korean Armistice Agreement in 1953. In the computer security field; however, the DMZ (Demilitarized Zone) is either a logical or physical …
ISDN (Integrated Services Digital Network) is a system of digital phone connections that has been designed for sending voice, video, and data simultaneously over digital or ordinary phone lines, with a much faster speed and higher quality than an analog system can provide. ISDN is basically a set of protocol for making and breaking circuit …
A wireless modem is a network device which connects to a wireless network. Modems are frequently associated with telephone systems, but wireless modems are used with computers to connect to the Internet. Connecting a wireless modem to the computer will directly connect to your wireless ISP (Internet Service Provider). Wireless modems operate at speeds comparable …
A Denial of Service (DoS) attack is one that attempts to prevent the victim from being able to use all or part of his/her network connection. A denial of service attack may target a user to prevent him/her from making outgoing connections on the network. It may also target an entire organization to either prevent …
192.168.0.1 is a private IP address that is commonly used by Netgear and D-Link routers. The Netgear and D-Link brands are competitors to the Linksys division of Cisco, Incorporated and make a large number of the Internet routers used world-wide. The network address is not granted to the Netgear and D-Link companies exclusively; however, as …