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Net Mask
Also often called the ‘subnet-mask’, this value is used alongside the IP address
to help dene a smaller collection (or subnet) of devices on a network. In this
way a distinction is made between locally connected devices and ones that are
reachable elsewhere, such as on the wider Internet. This process helps to reduce
overall trafc on the network and hence speed up connections in general.
Gateway
This is the address of the device that links the local network (to which the
MC5-IP is connected) to another network such as the Internet. Usually this is a
network switch or router and it will be used whenever a device to be contacted
lies outside the local network.
VNC Port
This is the logical link through which communications with a remote VNC viewer
will be channelled (see What is a port?). The default setting is 5900 which is
a widely recognised port number for use by VNC software. However, in certain
circumstances it may be advantageous to alter this number - see Security issues
with ports for more details.
Note: The VNC port and HTTP port can be set to the same port number in order
to simplify router and rewall conguration. If this is done then the MC5-IP will
“listen” for both types of trafc on the single port.
HTTP Port
This is the logical link through which communications with a remote web
browser will be channelled. The default setting of 80 is an established standard
for web (HTTP – HyperText Transfer Protocol) trafc though this can be changed
to suit your local network requirements.
Clear IP Access Control
This option removes all entries from the IP access control feature within the
MC5-IP. The IP access control feature (congurable by a global admin user)
allows certain network address ranges to be denied access to the MC5-IP. If set
incorrectly, it is possible to exclude all network users and so this option provides
an emergency recovery point.
Network Conguration
This page allows you to congure the
various aspects of the IP port and its
relationship with the local network.
Mac Addr
Media Access Control address – this
is the unique and unchangeable code
that was hard coded within your MC5-
IP unit when it was built. It consists
of six 2-digit hexadecimal (base 16)
numbers separated by colons. A
section of the MAC address identies
the manufacturer, while the remainder
is effectively the unique electronic serial number of your particular unit.
Use DHCP
DHCP is an acronym for ‘Dynamic Host Conguration Protocol’. Its function is
particularly useful when connecting to medium size or larger networks, such
as the Internet. When this option is selected, your MC5-IP will attempt to
locate a DHCP server on the network. If such a server is located, it will supply
three things to the MC5-IP: an IP address, an IP network mask (also known
as a Subnet mask) and a Gateway address. These are not usually granted
permanently, but on a ‘lease’ basis for a xed amount of time or for as long as
the MC5-IP remains connected and switched on. Discover allocations.
IP Address
This is the identity of the MC5-IP within a network. The IP address can be
thought of as the telephone number of the MC5-IP. Unlike the MAC address,
the IP address can be altered to suit the network to which it is connected. It can
either be entered manually or congured automatically using the DHCP option.
When the DHCP option is enabled, this entry is unavailable.
LINDY MC5
Network Config
Mac Addr 00:0F:58:40:07:FE
Use DHCP No
IPAddress 192.168.42.25
Net Mask 255.255.255.0
Gateway 192.168.0.1
VNC
Port 5900
HTTP
Port 80
Clear IP Access Control
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