16
Networking issues
Thanks to its robust security the AdderView CATxIP 5000 offers you great
flexibility in how it integrates into an existing network structure. The AdderView
CATxIP 5000 is designed to reside either on an internal network, behind a
firewall/router or alternatively with its own direct Internet connection.
Positioning AdderView CATxIP 5000 in the network
Every network setup is different and great care needs to be taken when
introducing a powerful device such as the AdderView CATxIP 5000 into an
existing configuration. A common cause of potential problems can be in clashes
with firewall configurations. For this reason the AdderView CATxIP 5000 is
designed to be intelligent, flexible and secure. With the minimum of effort it
can reside either behind the firewall or alongside with its own separate Internet
connection.
IMPORTANT: When the AdderView CATxIP 5000 is accessible from the public
Internet connection, you must ensure that sufficient
security measures
are
employed.
Placing AdderView CATxIP 5000 behind a router or firewall
A possible point of contention between the AdderView CATxIP 5000 and a
firewall can occasionally arise over the use of IP ports. Every port through the
firewall represents a potential point of attack from outside and so it is advisable
to minimise the number of open ports. The AdderView CATxIP 5000 usually uses
two separate port numbers, however, these are easily changeable and can even
be combined into a single port.
IMPORTANT: The correct configuration of routers and firewalls requires
advanced networking skills and intimate knowledge of the particular network.
Adder Technology cannot provide specific advice on how to configure your
network devices and strongly recommend that such tasks are carried out by a
qualified professional.
Port settings
As standard, the AdderView CATxIP 5000 uses two
ports
to support its two
types of viewer:
• Port 80 for users making contact with a web browser, and
• Port 5900 for those using the VNC viewer.
When these port numbers are used, VNC viewers and web browsers will locate
the AdderView CATxIP 5000 correctly using only its network address. The
firewall/router must be informed to transfer any traffic requesting these port
numbers through to the AdderView CATxIP 5000.
When a web server is also on the local network
Port 80 is the standard port used by web (HTTP) servers. If the AdderView
CATxIP 5000 is situated within a local network that also includes a web server
or any other device serving port 80 then, if you want to use the web browser
interface from outside the local network environment, the HTTP port number of
the AdderView CATxIP 5000 may need to be changed.
When you change the HTTP port to anything other than 80, then each remote
browser user will need to specify the port address as well as the IP address. For
instance, if you set the HTTP port to ‘8000’ and the IP address is ‘192.168.47.10’
then browser users will need to enter:
http://192.168.47.10
:
8000
(Note the single colon that separates the IP address and the port number).
The firewall/router would also need to be informed to transfer all traffic to the
new port number through to the AdderView CATxIP 5000.
LOC
REM
VNC
100
LNK
PWR
www.adder.com
Internet
CAM
AdderView CATxIP 5000 has
a local address and net mask,
i.e.
IP address: 192.168.0.3
Net mask: 255.255.255.0
Remote user with VNC viewer
accesses IP address: 129.7.1.10
and automatically uses port
5900.
Firewall/router address:
129.7.1.10
The firewall routes the
request from the VNC viewer
on port 5900 through to the
AdderView CATxIP 5000 at
local address 192.168.0.3
CAT5-A2
