User Manual

GigaX Series L2 Managed Switch User’s Guide
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filtering To screen out selected types of data, based on filtering rules.
Filtering can be applied in one direction (ingress or egress), or in
both directions.
filtering rule A rule that specifies what kinds of data the a routing device will
accept and/or reject. Filtering rules are defined to operate on an
interface (or multiple interfaces) and in a particular direction
(upstream, downstream, or both).
FTP File Transfer Protocol
A program used to transfer files between computers connected
to the Internet. Common uses include uploading new or updated
files to a web server, and downloading files from a web server.
host A device (usually a computer) connected to a network.
HTTP Hyper-Text Transfer Protocol
HTTP is the main protocol used to transfer data from web sites
so that it can be displayed by web browsers. See also web
browser, web site.
ICMP Internet Control Message Protocol
An Internet protocol used to report errors and other
network-related information. The ping command makes use of
ICMP.