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Networking issues
Thanks to its robust security the LINDY KVM IP offers you great flexibility in how
it integrates into an existing network structure. The LINDY KVM IP is designed
to reside either on an internal network, behind a firewall/router or alternatively
with its own direct Internet connection.
Positioning LINDY KVM IP in the network
Every network setup is different and great care needs to be taken when
introducing a powerful device such as the LINDY KVM IP into an existing
configuration. A common cause of potential problems can be in clashes with
firewall configurations. For this reason the LINDY KVM IP is designed to be
intelligent, flexible and secure. With the minimum of effort the LINDY KVM IP
can reside either behind the firewall or alongside with its own separate Internet
connection.
Internet
Firewall/
router
IP
Access Switch Plus
LOC REM VNC 100 LNK PWR
KVM link to
Local
host system
network
connection
LINDY KVM IP situated
behind the firewall
IMPORTANT: When the LINDY KVM IP is accessible from the public Internet or dial
up connection, you must ensure that sufficient
Internet
Firewall/
router
IP
Access Switch Plus
LOC REM VNC 100 LNK PWR
Local
KVM link to
network
host system
connection
LINDY KVM IP situated
alongside the firewall
security measures
are employed.
Placing LINDY KVM IP behind a router or firewall
A possible point of contention between the LINDY KVM IP 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 LINDY KVM IP 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. LINDY 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 LINDY KVM IP uses two
• 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 LINDY KVM IP correctly using only its network address. The firewall/router
must be informed to transfer traffic, requesting these port numbers, through to
the LINDY KVM IP.
When a web server is also on the local network
Port 80 is the standard port used by web (HTTP) servers. If the LINDY KVM IP 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 LINDY KVM IP must 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 LINDY KVM IP.
If you need to change the VNC port number
If you change the VNC port to anything other than 5900, then each VNC viewer
user will need to specify the port address as well as the IP address. For instance,
if you set the VNC port to '11590' and the IP address is '192.168.47.10' then
VNC viewer users will need to enter:
192.168.47.10::11590
(Note the double colons that separate the IP address and port number).
The firewall/router would also need to be informed to transfer all traffic to the
new port number through to the LINDY KVM IP.
ports
to support its two types of viewer:
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