CARLO GAVAZZI VMU-C EM, Instruction Manual

Page: 18 / 126

VMU-C
VMU-C Instruction manual 18

Finally, you can manually specify the addresses of the preferred and
alternative DNS servers to be used to access the Internet by selecting
(
Use the following DNS server addresses )
(see “C” area);
as an
alternative, if the LAN port is set to DHCP mode, you can allow VMU-C
EM to acquire the DNS server address from the DHCP server, by enabling
the option
(Get DNS server address Automatically). .
Press
the “
Save setting
” button to store the network setting. To apply the new
settings, VMU-C needs a restart, which is performed automatically; wait until
the count-down is over; then you'll routed back to the home page.
The system requires to have access to the Internet for the following services:
- To send e-mails to the configured SMTP server.
- To synchronise the date and time settings through the NTP service (if
configured).
Note : to ensure that VMU-C EM is accessible from the outside through a
LAN connection, it needs to be appropriately re-routed to the ADSL Modem
or Router (NAT- Port forwarding) to which it is connected.
The ports to be
re-routed are : 80 and 52325 .
2)
Dynamic public IP address management
Should you not have at your disposal a static public IP address allowing to
reach the VMU-C from the Internet, but should you have to use any public IP
addresses dynamically assigned by your ISP (Internet Service Provider), you
may resort to DNS server managers keeping the dynamic public IP address
constantly synchronised with a domain name (see “D” area). The managers
with which VMU-C EM is compliant are
DynDns.org , DynDns.it and No-
ip.com . To access the service you need to connect to http://www.dyndns.org/
(or http://www.dyndns.it/ or http://www.No-ip.com/ ), register by creating an
account and finally create a new “Dynamic DNS host”. The term "Dynamic
DNS host" indicates a domain address which shall then be typed into the
browser's address bar to reach VMU-C. (E.g.
VMUC.No-ip.com ). When
registering to DynDNS.org (or to an equivalent site), please provide a
Username and a Password that VMU-C will use to authenticate with the
server.
To enable the management of the dynamic public IP address you need to:
 Check “Enable dynamic DNS”.

Type the name of the chosen Dynamic DNS host.

Type the Username and Password provided during account
registration.
 Click on “Save setting”
Note : Carlo Gavazzi has no commercial or technical agreement with any
Dynamic DNS service provider; the above compliancy is meant as a tool
to allow customer to use some of the major dynamic DNS infrastructure
available in the market