Owner`s manual
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dns override
DNS – The Domain Name System (DNS) is the method by which Internet domain names are
located and translated into Internet Protocol (IP) addresses. A domain name is a meaningful
and easy-to-remember name for an Internet Address.
If there are certain DNS host names you want to override for your internal DNS clients, add
them under DNS overrides on this page. For example, if you want www.yourcompany.com to
point to a different site internally than it does from the Internet, enter an override for www.
yourcompany.com with the appropriate IP address.
This can also be used as a rudimentary, and easy to bypass, lter on web sites LAN clients
can visit by assigning the undesired host name to an invalid IP address. For example, to
block www.example.com, put in an override to redirect it to an invalid IP address, such as
1.2.3.4. Note that using a different DNS server or editing the hosts le on the client machine
gets around this restriction, but doing this is sufcient to block the site for the vast majority
of users.
If your Cortexa acts as the DHCP server for your LAN, and you need name resolution
between hosts on the LAN, check the “Register DHCP leases in DNS forwarder” box. This will
append the default domain in Interfaces: General Setup. For example, if your PC name is
my-pc and your default domain is example.com, it will register my-pc.example.com with the
IP address assigned from DHCP, so the other hosts on your LAN can locate your machine by
that name.
Cortexa 7202 ConfIguratIon utIlIty