Инструкция для ZYXEL ZyWALL 110

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Chapter 7 Interfaces

ZyWALL 110/310/1100 Series User’s Guide

157

Pool Size

Enter the number of IP addresses to allocate. This number must be at least one and is
limited by the interface’s Subnet Mask. For example, if the Subnet Mask is
255.255.255.0 and IP Pool Start Address is 10.10.10.10, the ZyWALL can allocate
10.10.10.10 to 10.10.10.254, or 245 IP addresses.

If this field is blank, the IP Pool Start Address must also be blank. In this case, the
ZyWALL can assign every IP address allowed by the interface’s IP address and subnet
mask, except for the first address (network address), last address (broadcast address)
and the interface’s IP address.

First DNS Server

Second DNS

Server

Third DNS

Server

Specify the IP addresses up to three DNS servers for the DHCP clients to use. Use one
of the following ways to specify these IP addresses.

Custom Defined - enter a static IP address.

From ISP - select the DNS server that another interface received from its DHCP server.

ZyWALL - the DHCP clients use the IP address of this interface and the ZyWALL works
as a DNS relay.

First WINS

Server, Second

WINS Server

Type the IP address of the WINS (Windows Internet Naming Service) server that you
want to send to the DHCP clients. The WINS server keeps a mapping table of the
computer names on your network and the IP addresses that they are currently using.

Default Router

If you set this interface to DHCP Server, you can select to use either the interface’s IP
address or another IP address as the default router. This default router will become the
DHCP clients’ default gateway.

To use another IP address as the default router, select Custom Defined and enter the
IP address.

Lease time

Specify how long each computer can use the information (especially the IP address)
before it has to request the information again. Choices are:

infinite - select this if IP addresses never expire

days, hours, and minutes - select this to enter how long IP addresses are valid.

Extended

Options

This table is available if you selected DHCP server.

Configure this table if you want to send more information to DHCP clients through
DHCP packets.

Add

Click this to create an entry in this table. See

Section 7.3.4 on page 124

Edit

Select an entry in this table and click this to modify it.

Remove

Select an entry in this table and click this to delete it.

This field is a sequential value, and it is not associated with any entry.

Name

This is the option’s name.

Code

This is the option’s code number.

Type

This is the option’s type.

Value

This is the option’s value.

Enable IP/MAC

Binding

Select this option to have the ZyWALL enforce links between specific IP addresses and
specific MAC addresses for this VLAN. This stops anyone else from manually using a
bound IP address on another device connected to this interface. Use this to make use
only the intended users get to use specific IP addresses.

Enable Logs for

IP/MAC Binding

Violation

Select this option to have the ZyWALL generate a log if a device connected to this VLAN
attempts to use an IP address that is bound to another device’s MAC address.

Static DHCP

Table

Configure a list of static IP addresses the ZyWALL assigns to computers connected to
the interface. Otherwise, the ZyWALL assigns an IP address dynamically using the
interface’s IP Pool Start Address and Pool Size.

Table 53

Configuration > Network > Interface > VLAN > Create Virtual Interface (continued)

LABEL

DESCRIPTION