LEGRAND CM2001 User Manual page 11

Subnet Mask
Gateway
Obtain DNS from
DHCP
Primary DNS
Secondary DNS
HTTP Port
NOTE
Subnets allow network traffic between hosts to be separated based on
the network's configuration. In IP networking, traffic takes the form of
packets. IP subnets advance network security and performance to
some level by organizing hosts into logical groups. Subnet masks
contain four bytes and usually appear in the same "dotted decimal"
format as the IP Address. For example, a very common subnet mask
in its binary form is 11111111 . 11111111 . 11111111 . 00000000, and
is usually shown in its more readable form as 255.255.255.0.
A gateway is a piece of software or hardware that passes information
between networks, such as a router. You'll see this term most often
when you either log onto an Internet site or when you send email
between different servers.
Check this box when the DHCP server is installed on the network and
provides DNS service.
When you send email or point a browser at an Internet domain such
as xxxxx.com, the domain name system translates the name into an IP
address. The term refers to two things: the conventions for naming
hosts and the way the names are control across the Internet.
The same function as Primary DNS, but not normally required for a
home network.
The CM2001 supports two HTTP ports. The first one is default port 80
and this port is fixed. Port 80 is very useful for Intranet usage. The
second HTTP port is configurable. Local users could assign the
second port number, and any WAN users would need to add that port
number to the back of IP address to login. For example:
http://192.168.0.20:8080.
Therefore, the user can access the CM2001 by either
http://xx.xx.xx.xx/, or
http://xx.xx.xx.xx:xxxx/
If multiple devices are installed on the LAN and also required to be
accessed from the WAN, then the HTTP Port can be assigned as the
virtual server port mapping to support multiple devices.
When Network configuration is finished, click "OK" to save and enable
the setting.
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