Instruction manual
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On the other hand in the case of big installations it is recommended to use multiple network cards to diversify
the traffic, isolate the recording flow from the display network consumption, or simply to increase the amount of
supported cameras.
Nethunter server is just a video proxy and central settings database, which simplifies the connectivity of multiple
clients to multiple devices.
The Nethunter server is forwarding video between the devices and the clients. This video has the native format
and the decompression will take place on the client side. When calculating your network topology, consider the
network consumption that the clients will produce.
DSL connectivity
It is possible to connect some Nethunter components/devices through a DSL connection in order that distributed
offices/branches of a business may have different connectivity options.
When the network connection is not so good, you can choose to install a remote NVVR with bandwidth control
limitation adjusted to the realistic network speed; the NVVR will adjust the video flow depending on this
parameters and video demand.
Other devices like some DVR models also allow.
Router configuration:
When connecting an NVVR to an ADSL, you have to ensure that the NVVR ports are open on your router in both
directions. The NVVR ports by default are 37000 and 38000, but you can change them to a more suitable one for
you, or take advantage of NAT router options.
Dynamic IP:
Nethunter and NVVR support dynamic IP address management through any of the existing dynamic DNS
solutions for IP.
As an example, http://www.dyndns.com offers dynamic DNS (domain name server) services for dynamic IP
addresses. In this way Nethunter server will connect to a unique DNS name resolution for your NVVR, but the
dynamic DNS service will be redirecting that service to the IP that the NVVR may have anytime.
Proxy & firewall configuration:
In case your network topology includes proxy servers or firewalls to improve security, it could limit some traffic
in your network.
In this case it is really important to ensure that the server is able to view all the clients, DVR & NVR devices and
cameras through all the ports and in both directions. In the case this is not really done, the system could have
some unusual behavior such as video interruptions, PTZ controls not working, etc…
NOTE
As a recommendation, you have to setup the network speed considering the maximum bandwidth that your devices will generate, regardless of
the amount of clients connected. This will ensure that Nethunter server will receive images, events from devices and all the needed data to keep
the system working properly. On the other hand, setup clients network according to each client usage forecast.