Garmin HN294DP/DI manual Encapsulation, Ethernet, Firewall, Firmware, Gateway, G.dmt

Models: HN294DP/DI

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Important Information

- E -

Encapsulation

A technology that enables one network to send its data via another network's connections. Encapsulation works by encapsulating a network protocol within packets carried by the second network. Encapsulation is also called tunneling.

Ethernet

A local-area network (LAN) architecture that uses a bus topology and supports data transfer rates of 10 Mbps. It is one of the most widely implemented LAN standards.

A newer version of Ethernet, called 100Base-T (or Fast Ethernet), supports data transfer rates of 100 Mbps. And the newest version, Gigabit Ethernet, supports data rates of 1 gigabit (1,000 megabits) per second.

- F -

Firewall

A system designed to prevent unauthorized access to or from a private network. Firewalls can be implemented in both hardware and software, or a combination of both. Firewalls are frequently used to prevent unauthorized Internet users from accessing private networks connected to the Internet, especially intranets. All messages entering or leaving the intranet pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria. See also Stateful Inspection.

Firmware

Firmware is a combination of software and hardware consisting of software (programs or data) that has been written onto read-only memory.

FTP

Abbreviation of File Transfer Protocol, the protocol used on the Internet for sending files.

- G -

Gateway

A node on a network that serves as an entrance to another network. In enterprises, the gateway is the computer that routes the traffic from a workstation to the outside network that is serving the Web pages. In homes, the gateway is the ISP that connects the user to the Internet.

G.dmt

A kind of asymmetric DSL technology, based on DMT modulation, that offers up to 8 megabits per second downstream bandwidth, 1.544 Megabits per second upstream bandwidth. "G.dmt" is actually a nickname for the standard officially known as ITU-T Recommendation G.992.1.

EN/LZT 108 6377 R4 - September 2003

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Garmin HN294DP/DI manual Encapsulation, Ethernet, Firewall, Firmware, Gateway, G.dmt