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Chapter 11 Interfaces
ZyWALL USG 50 User’s Guide
225
Interface Type 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.
Interface
Name
Specify a name for the interface. It can use alphanumeric characters,
hyphens, and underscores, and it can be up to 11 characters long.
Port This is the name of the Ethernet interface’s physical port.
Zone Select the zone to which this interface is to belong. You use zones to
apply security settings such as firewall, IDP, remote management,
anti-virus, and application patrol.
MAC Address This field is read-only. This is the MAC address that the Ethernet
interface uses.
Description Enter a description of this interface. It is not used elsewhere. You can
use alphanumeric and
()+/:=?!*#@$_%- characters, and it can be
up to 60 characters long.
IP Address
Assignment
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.
Get
Automatically
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 693.
Use Fixed IP
Address
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.
IP Address Enter the IP address for this interface.
Subnet Mask 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.
Gateway 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.
Table 55 Configuration > Network > Interface > Ethernet > Edit (continued)
LABEL DESCRIPTION