User guide

Reference Guide 145
HTTPS (Secure HTTP)
A variation of HTTP enabling the secure transmission of data and
HTML files. Generally used in conjunction with Secure Sockets
Layer (SSL).
hub
A device that receives and sends signals along the network
between the nodes connected to it.
hyperlink
An object on a Web page such as a graphic or underlined text that
represents a link to another location in the same file or a different
file. When clicked, the page or graphic appears.
IANA (Internet Assigned Number Authority)
The central authority charged with assigning parameter values to
Internet protocols. For example, IANA controls the assignment of
well-known TCP/IP port numbers. Currently IANA manages
port numbers 1 through 1023.
ICMP (Internet Control Message Protocol)
A protocol used to pass control and error messages back and forth
between nodes on the Internet.
identity certificate
A signed statement that binds a key to the name of an individual
and therefore delegates authority from that individual to the
public key.
IDS
See Intrusion Detection System.
IETF
See Internet Engineering Task Force.
IKE (Internet Key Exchange)
A protocol used with IPSec virtual private networks. Automates
the process of negotiating keys, changing keys, and determining
when to change keys.
implicit trust
A condition reserved for pairs located on a local keyring. If the
private portion of a key pair is found on a user’s keyring, PGP