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CONFIGURATION

Industrial router IPL-E User guide ref. 9015909-03 Page 93

20.4 Configuring the DNS server

For domain names resolution, the IPL-E can behave like a domain name

server or a domain name relay.

DNS server :

A domain name server is a networking device which is able to associate a

label (etictelecom.com for instance) with an IP address.

That function allows a client device to send a request to a network

equipment referring to a domain name as if it was the actual IP address of

the destination device.

The IPL-E router is able to resolve any domain name composed with the

name of one of the devices entered in the devices list followed the site

name which is entered at the top of the devices list.

DNS relay :

The IPL-E router behaves also like a DNS relay; any DNS request it

receives from the LAN, which cannot be resolved because the device is

not registered in the devices list, will be transferred to the internet to be

resolved.

That function can be carried out only if the IPL-E IP address is pointed out

as the main DNS server of the devices of the LAN.

That function is efficient in particular when a device connected to the LAN

has to send emails through the Internet.

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ETIC 1230 Manual do Utilizador Página 93