User guide

SerVision MVG 400 System Guide
Configuring the MVG 400 76
Figure 66: Adding a port
3. Click Update and then save the settings. They will be implemented after the unit is
restarted (see Saving Configuration Changes, page 139).
Proxy and DDNS Settings
Proxy and dynamic DNS (DDNS) services make it possible for clients to connect to routers
that cannot be accessed directly.
A proxy server is used to enable client applications to connect to video gateway units like the
MVG 400 when the connection cannot be directly initiated by the client. Typically, this
occurs when the MVG 400 connects to the internet through the cellular network. It may also
occur if the MVG 400 does not have a public IP address. The proxy server functions as an
intermediary that relays requests and data between the MVG 400 and clients. When a proxy
service is used, the MVG 400 initiates a connection with the proxy server and registers with
it. Clients can then connect to the MVG 400 indirectly by connecting to the proxy server.
The MVG 400 can be configured to work with proxy services. When it is, it automatically
registers with the proxy server each time it connects to a network. For additional information
about proxy services in general and about proxy servers that are available for use please
contact your vendor.
DDNS is designed to facilitate internet connections to systems that use dynamic public IP
addresses (see Connecting the MVG 400 to an External Network, page 26). When a DDNS is
used, the MVG 400 is assigned a name. The MVG 400 registers with the DDNS service each
time it connects to the internet, and relays its current public IP address to the service. Client
applications connect to the MVG 400 by using its name rather than its public IP address. The
DDNS service ensures that the correct public IP address is linked to the name at all times.
The MVG 400 can be configured to work with DDNS services. When it is, it automatically
registers with the DDNS each time its public IP changes.
Three DDNS services are supported by the system: SV-DDNS (SerVision's DDNS service),
No-IP, and DynDNS. For information about the SV-DDNS service, consult your vendor. For
information about the No-IP and DynDNS DDNS services, consult their websites (www.no-
ip.com and www.dyndns.com).
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To adjust the Proxy and DDNS settings:
1. In the Main Menu, under System, click Proxy & DDNS. The Proxy and DDNS Settings
screen opens: