SonicWALL 170 Benutzerhandbuch

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Default Gateway - A device on an Internetwork that forwards packets to another 

network. 

DHCP - Dynamic Host Configuration Protocol allocates IP addresses to computers on 

the network automatically without assigning a computer a static (fixed) IP address. 

DNS - A Domain Name System is a hierarchical naming system that resolves a domain 

name with its associated IP address. A DNS server looks up the name of a computer 
and finds the corresponding IP address. This allows users to access hosts using 
friendly text-based names instead of IP addresses. These names are called fully 
qualified domain names (FQDN).

IP Address - An Internet Protocol Address is a 32 bit number that identifies a computer 

or other resource on the Internet or on any TCP/IP network. The number is usually 
expressed as four numbers from 0 to 255 separated by periods, for example, 
172.16.31.254. 

ISP - An Internet Service Provider is the company that provides a connection to the 

Internet.

LAN - A Local Area Network is typically a group of computers located at a single 

location, and is commonly based on the Ethernet architecture.

NAT - Network Address Translation is an Internet standard that allows your local network 

to use private IP addresses, which are not recognized on the Internet. The IP 
address used for the router is the only routable IP address. The computers behind 
the NAT can access the Internet through the router, but Internet users cannot access 
the computers behind the router. 

Packet - A unit of information transmitted over the Internet or within any TCP/IP network. 

Packets have a header, which contains information about the source, destination, 
and protocol to be used for the data, and a body, which contains the data being 
transmitted. 

PPPoE - The Point to Point Protocol over Ethernet supports the transmission of network 

packets over an analog phone line.

Private IP Address - An IP address for a resource in your network that is not known or 

published outside the zone (for example LAN) where it is located.

Public IP Address - An IP address for a resource in your network that is published 

outside your network to the WAN.

Router - A device that routes data between networks through IP address information in 

the header of the IP packet. A router forwards packets to other routers until the 
packets reach their destination. The Internet is the largest example of a routed 
network.

SSID - A Service Set Identifier is a unique string of characters that identifies a wireless 

network.