ZyXEL Communications ZYWALL USG 20 Manual page 227

Table 51 Configuration > Network > Interface > Ethernet > Edit (continued)
LABEL
Interface Type
Interface
Name
Port
Zone
MAC Address
Description
IP Address
Assignment
Get
Automatically
Use Fixed IP
Address
IP Address
Subnet Mask
Gateway
ZyWALL USG 20/20W User's Guide
DESCRIPTION
This field is read-only.
Internal is for connecting to a local network. Other corresponding
configuration options: DHCP server and DHCP relay. The ZyWALL
automatically adds default SNAT settings for traffic flowing from this
interface to an external interface.
External is for connecting to an external network (like the Internet).
The ZyWALL automatically adds this interface to the default WAN
trunk.
For General, the rest of the screen's options do not automatically
adjust and you must manually configure a policy route to add routing
and SNAT settings for the interface.
Specify a name for the interface. It can use alphanumeric characters,
hyphens, and underscores, and it can be up to 11 characters long.
This is the name of the Ethernet interface's physical port.
Select the zone to which this interface is to belong. You use zones to
apply security settings such as firewall, remote management.
This field is read-only. This is the MAC address that the Ethernet
interface uses.
Enter a description of this interface. It is not used elsewhere. You can
use alphanumeric and
()+/:=?!*#@$_%-
up to 60 characters long.
These IP address fields configure an IP address on the interface itself.
If you change this IP address on the interface, you may also need to
change a related address object for the network connected to the
interface. For example, if you use this screen to change the IP
address of your LAN interface, you should also change the
corresponding LAN subnet address object.
This option appears when Interface Properties is External or
General. Select this to make the interface a DHCP client and
automatically get the IP address, subnet mask, and gateway address
from a DHCP server.
You should not select this if the interface is assigned to a VRRP group.
See Chapter 39 on page
This option appears when Interface Properties is External or
General. Select this if you want to specify the IP address, subnet
mask, and gateway manually.
Enter the IP address for this interface.
Enter the subnet mask of this interface in dot decimal notation. The
subnet mask indicates what part of the IP address is the same for all
computers in the network.
This option appears when Interface Properties is External or
General. Enter the IP address of the gateway. The ZyWALL sends
packets to the gateway when it does not know how to route the
packet to its destination. The gateway should be on the same network
as the interface.
characters, and it can be
715.
Chapter 11 Interfaces
227