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Network conguration
This page allows you to congure the various aspects of the IP port and its
relationship with the local network.
MAC address
Media Access Control address – this is the unique and unchangeable code that
was hard coded within your AdderLink 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 Adder Technology as 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 AdderLink IP will attempt to
locate a DHCP server on the network. If such a server is located, it will supply
three things to the AdderLink 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 AdderLink IP remains connected and switched on. Discover allocations.
IP address
This is the identity of the AdderLink IP within a network. The IP address
can be thought of as the telephone number of the AdderLink 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 greyed out.
IP network 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.
IP gateway
This is the address of the device that links the local network (to which the
AdderLink IP is connected) to another network such as the wider Internet.
Usually the actual gateway is a network switch or router and it will be used
whenever a required address lies outside the current 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.
HTTP port
This is the logical link through which communications with a remote web
browser will be channelled (see What is a port?). 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.
IP access control
This section allows you to optionally specify ranges of addresses which will or
won’t be granted access to the AdderLink IP. If this option is left unchanged,
then the default entry of ‘+0.0.0.0/0.0.0.0’ ensures that access from all IP
addresses will be permitted. See Setting IP access control for details.
To get here
1 Using VNC viewer or a browser, log on as the ‘admin’ user.
2 Click the ‘Congure’ button in the top right corner.
3 Click the ‘Network conguration’ option.