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DI-724U User’s Manual
D-Link Systems, Inc.
Appendix
H
H.323 –
A standard that provides consistency of voice and video transmissions and compatibility for
videoconferencing devices
Half-duplex –
Data cannot be transmitted and received at the same time
Hashing –
Transforming a string of characters into a shorter string with a predefined length
Hexadecimal –
Characters 0-9 and A-F
HomePNA –
Networking over telephone lines
HomeRF –
Networking standard that combines 802.11b and DECT (digital Enhanced Cordless
Telecommunication) that provides speeds up to 1.6 Mbps and a distance of 150 ft using a Frequency Hopping
transmission method
Hop –
The action of data packets being transmitted from one router to another
Host –
Computer on a network
HTTP –
Hypertext Transfer Protocol is used to transfer files from HTTP servers (web servers) to HTTP clients
(web browsers)
HTTPS –
HTTP over SSL is used to encrypt and decrypt HTTP transmissions
Hub –
A networking device that connects multiple devices together
I
ICMP –
Internet Control Message Protocol
IEEE –
Institute of Electrical and Electronics Engineers
IETF –
Internet Engineering Task Force
IGMP –
Internet Group Management Protocol is used to make sure that computers can report their multicast
group membership to adjacent routers
IIS –
Internet Information Server is a WEB server and FTP server provided by Microsoft
IKE –
Internet Key Exchange is used to ensure security for VPN connections
Infrastructure –
In terms of a wireless network, this is when wireless clients use an Access Point to gain
access to the network
Internet –
A system of worldwide networks which use TCP/IP to allow for resources to be accessed from
computers around the world
Internet Explorer –
A World Wide Web browser created and provided by Microsoft
Internet Protocol –
The method of transferring data from one computer to another on the Internet
Internet Protocol Security –
IPsec provides security at the packet processing layer of network
communication
Internet Service Provider –
An ISP provides access to the Internet to individuals or companies
Interoperability –
The ability for products to interact with other products without much customer interaction
Intranet –
A private network
Intrusion Detection –
A type of security that scans a network to detect attacks coming from inside and outside
of the network
IP –
Internet Protocol
IP address –
A 32-bit number, when talking about Internet Protocol Version 4, that identifies each computer
that transmits data on the Internet or on an Intranet