User manual

System
Cobalt Qube 3 User Manual 167
3. Configure the following settings:
• Server Gateway. Enter the IP address of your local network gateway. A
network gateway allows you to connect to the world outside of your
LAN. Enter a series of four numbers between 0 and 255 separated by
periods. For example, 192.168.1.254 is a valid entry. Leaving this field
empty prevents this machine from communicating with other networks.
• IP Forwarding and Masquerading. Select the method of forwarding
packets through the server appliance. Choosing packet forwarding with
masquerading enables network address translation (NAT) functionality.
This allows your organization to share Internet access by translating all
network traffic between your single publicly accessible IP address and
your many privately accessible IP addresses through this server.
Choosing only packet forwarding with no masquerading only allows
traffic between one network interface and the other without providing
NAT. Choosing no packet forwarding does not allow any traffic between
one network interface and the other.
• IP Address. Enter the IP address of the secondary interface. If you are
using only one network interface connection to the server appliance, use
the primary interface and leave the secondary interface empty. Enter a
series of four numbers between 0 and 255 separated by periods. For
example, 209.43.21.5 is a valid entry.
• IP Network Mask. Enter the network mask of the secondary interface.
If you are using only one network interface connection to the server, use
the primary interface and leave the secondary interface empty. Enter a
series of four numbers between 0 and 255 separated by periods. For
example, 255.255.255.0 is a valid entry.
• MAC Address. The Media Access Control (MAC) address is the
hardware address of the network interface card. This hardware address is
a unique identifier and cannot be changed.
4. Click Save.
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Note: This option does not appear in the Setup Wizard.
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Note: If you configured the Qube 3 manually and want to use the
Qube 3 as the Internet connection for your network, you must
configure the clients on your network with the IP address of the
Qube 3 as their default gateway.