
SymDec 4
User Manual
72
An ethernet connection can be used to connect to the unit from a PC for the viewing of live or recorded images.
Use this menu to configure the Ethernet communications settings. Select from the following:
•
Ethernet:
Select Enable or Disable.
•
DHCP:
Select Enable or Disable. Enables dynamic IP addressing. When DHCP is enabled (the
default), the IP address, Subnet Mask, Gateway, and Server fields are dynamically addressed.
Note:
In the event the DHCP server is offline or otherwise unable to assign a valid address the address will revert to
the previously assigned address.
•
Name Service:
Select from Disable, WINS or GnuDIP. Enabling WINS registers the hostname and IP
address within the current Network. This ensures that you can connect to the SymDec 4 by hostname
within the network. See
Dynamic DNS and GnuDIP
on page 72 for information on configuring
Dynamic DDS with GnuDIP.
•
IP Address / Subnet Mask / Gateway:
Consult with a qualified Network Administrator or an MIS
professional to configure these settings if DHCP is not enabled.
•
Primary Name Server / Backup Name Server:
The IP addresses of the Primary and Backup Name
Servers. Not required if DHCP is enabled.
•
HTTP Port:
Select the HTTP Port. Select from Port 0 to 65535. Shortcuts are available for port 80
(Camera 1 button) and 8080 (camera 2 button). Consult with a qualified Network Administrator or an
MIS professional to configure these settings.
•
Hostname:
The default Hostname is the unit’s serial number without the dashes. The user should
modify only when GnuDIP is selected in the Name Service field.
•
DDNS Update Time:
Select the Dynamic Domain Name Server interval. Select from Disable or from
1 to 1440 minutes.
Dynamic DNS and GnuDIP
In order to use Dynamic DNS with GnuDIP, the user has to configure following in the menus:
•
Name Service
must be set to GnuDIP (Ethernet Setting Menu).
•
Primary Name Server
must be set to the IP address of the GnuDIP server (Ethernet Setting Menu).
•
Hostname
must be set to the required hostname format e.g.
ge04.companyname.net
. For registration
purposes, the string until the first dot is used as hostname (here: ge04), the remainder is used as domain
(here: companyname.net). The hostname is set via the Ethernet Setting menu and is case sensitive.
•
DDNS update time
must be set to a reasonable value (e.g. 2 minutes).
•
The password for the DDNS server has to be set in the
Passwords->DDNS password menu
. The
password is 4 digits long (The Enter button can be used for the number 0).
When everything is configured correctly, the SymDec will send periodically a Dynamic DNS update message
over TCP port 3495 to the Dynamic DNS server telling the server its hostname. The SymDec does not include
its IP address in the message. Instead the Dynamic DNS server extracts the IP address of the SymDec via the
Ethernet source IP address. This guarantees that the correct IP address is used even when the SymDec is behind
a NAT router.
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