| Browse by alphabetical order: |
|
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | |
| |
|
| A |
|
| Access Point Access points are way stations in a wireless LAN that are connected to an Ethernet hub or server. Users can roam within the range of access points and their wireless device connections are passed from one access point to the next.
|
|
| Authentication Authentication refers to the verification of a transmitted message's integrity.
|
|
| B |
|
| Beacon Interval Refers to the interval between packets sent by access points for the purposes of synchronizing wireless LANs.
|
|
| D |
|
| DHCP DHCP (Dynamic Host Configuration Protocol) software automatically assigns IP addresses to client stations logging onto a TCP/IP network, which eliminates the need to manually assign permanent IP addresses.
|
|
| DMZ DMZ (Demilitarized Zone) A part of the network that is neither part of the internal network nor directly part of the Internet. Basically, a perimeter network established to house public services.
|
|
| F |
|
| Filter Filters are schemes which only allow specified data to be transmitted. For example, the router can filter specific IP addresses so that users cannot connect to those addresses.
|
|
| Firewall Firewalls are methods used to keep networks secure from malicious intruders and unauthorized access. Firewalls use filters to prevent unwanted packets from being transmitted. Firewalls are typically used to provide secure access to the Internet while keeping an organization’s public Web server separate from the internal LAN.
|
|
| G |
|
| Gateway Gateways are computers that convert protocols enabling different networks, applications, and operating systems to exchange information.
|
|
| H |
|
| Host Name The name given to a computer or client station that acts as a source for information on the network.
|
|
| HTTP HTTP (Hyper Text Transport Protocol) is the communications protocol used to connect to servers on the World Wide Web. HTTP establishes a connection with a Web server and transmits HTML pages to client browser (for example Windows IE). HTTP addresses all begin with the prefix 'http://'prefix (for example, http://www.yahoo.com).
|
|
| I |
|
| ICMP ICMP (Internet Control Message Protocol) is a TCP/IP protocol used to send error and control messages over the LAN (for example, it is used by the router to notify a message sender that the destination node is not available).
|
|
| IP IP (Internet Protocol) is the protocol in the TCP/IP communications protocol suite that contains a network address and allows messages to be routed to a different network or subnet. However, IP does not ensure delivery of a complete message—TCP provides the function of ensuring delivery.
|
|
| L |
|
| LAN LANs (Local Area Networks) are networks that serve users within specific geographical areas, such as in a company building. LANs are comprised of servers, workstations, a network operating system, and communications links such as the router.
|
|
| M |
|
| MAC Address A MAC address is a unique serial number burned into hardware adapters, giving the adapter a unique identification.
|
|
| Metric A number that indicates how long a packet takes to get to its destination.
|
|
| N |
|
| NAT NAT (Network Address Translation - also known as IP masquerading) enables an organization to present itself to the Internet with one address. NAT converts the address of each LAN node into one IP address for the Internet (and vice versa). NAT also provides a certain amount of security
by acting as a firewall by keeping individual IP addresses hidden from the WAN.
|
|
| Network Administrator The network administrator is the person who manages the LAN within an organization. The administrator's job includes ensuring network security, keeping software, hardware, and firmware up-to-date, and keeping track of network activity.
|
|
| P |
|
| Packet A packet is a portion of data that is transmitted in network communications. Packets are also sometimes called frames and datagrams. Packets contain not only data, but also the destination IP address.
|
|
| Ping Ping (Packet INternet Groper) is a utility used to find out if a particular IP address is present online, and is usually used by networks for debugging.
|
|
| R |
|
| RIP RIP
RIP (Routing Information Protocol) is a routing protocol that is integrated in the TCP/IP protocol. RIP finds a route that is based on the smallest number of hops between the source of a packet and its destination.
|
|
| RTS RTS (Request To Send) is a signal sent from the transmitting station to the receiving station requesting permission to transmit data.
|
|
| S |
|
| Server
Servers are typically powerful and fast machines that store programs and data. The programs and data are shared by client machines (workstations) on the network.
|
|
| SMTP SMTP (Simple Mail Transfer Protocol) is the standard Internet e-mail protocol. SMTP is a TCP/IP protocol defining message format and includes a message transfer agent that stores and forwards mail.
|
|
| T |
|
| TCP TCP(Transmission Control Protocol) is the transport protocol in TCP/IP that ensures messages over the network are transmitted accurately and completely.
|
|
| TCP/IP TCP/IP (Transmission Control Protocol/Internet Protocol) is the main Internet communications protocol. The TCP part ensures that data is completely sent and received at the other end. Another part of the TCP/IP protocol set is UDP, which is used to send data when accuracy and guaranteed packet delivery are not as important (for example, in realtime video and audio transmission).
|
|
| U |
|
| UDP UDP(User Datagram Protocol) is a protocol within TCP/IP that is used to transport information when accurate delivery isn't necessary (for example, realtime video and audio where packets can be dumped as there is no time for retransmitting the data).
|
|
| V |
|
| Virtual Servers
Virtual servers are client servers (such as Web servers) that share resources with other virtual servers (i.e., it is not a dedicated server).
|
|
| W |
|
| WEP
WEP (Wired Equivalent Privacy) is the de facto security protocol for wireless LANs, providing the “equivalent” security available in hardwired networks.
|
|
| Wireless LAN Wireless LANs (WLANs) are local area networks that use wireless communications
for transmitting data. Transmissions are usually in the 2.4GHz band. WLAN devices do not need to be lined up for communications like infrared devices. WLAN devices use access points which are connected to the wired LAN and provide connectivity to the LAN. The radio frequency of WLAN devices is strong enough to be transmitted through non-metal walls and objects, and can cover an area up to a thousand feet. Laptops and notebooks use wireless LAN PCMCIA cards while PCs use plug-in cards to access the WLAN.
|
| |
