ZyXEL Communications VSG-1200 V2 User Manual

VSG-1200 V2 User’s Guide

Chapter 7 Server

72

Administrator Idle-

Timeout

Specify how many minutes (between 1 and 1440) the web configuration 

can be left idle before the session times out. After it times out you have 

to log in with your username and password again. Very long idle 

timeouts may have security risks.

Note: This does NOT apply to the SMT management 

session.

DHCP Server

Select the DHCP mode on the LAN.

Disable

Select this option to disable DHCP server on the LAN.

DHCP Relay

Select this option to set the VSG to forward network configuration 

requests to a DHCP server on the LAN network. Then configure the 

DHCP Server IP Address field.

DHCP Server IP Address If you select DHCP Relay, enter the IP address of the real DHCP server.

DHCP Server (Private)

Select this option to set the VSG to assign network information (such as 

IP address, DNS information etc.) to Ethernet device(s) connected to the 

LAN port. This is the default setting.

IP Pool Start Address

Enter the first of the continuous addresses in the IP address pool. The 

default is 10.59.1.2 (based on the default management LAN IP address 

of 10.59.1.1).

Pool Size

This field specifies the size or count of the IP address pool. Enter a 

number not greater than 512. 

Lease Time (Private)

Specify the time (in minutes between 1 and 71582788) a DHCP client is 

allowed to use an assigned IP address. When the lease time expires, the 

DHCP client is given a new, unused IP address.

Primary/Secondary DNS 

IP Address

Enter the IP address of the DNS server(s) in the Primary DNS IP 

Address and/or Secondary DNS IP Address fields.

Note: You must specify a DNS server.

DHCP Server (Public)

Select this option if you want to assign public IP address(es) to the 

computer(s) connected on the LAN port. The VSG does not apply NAT 

on traffic using public IP address assigned on the LAN. 

Note: You must obtain more than one public IP address 

from your ISP. 

You need to configure a billing profile with the public service type (see 

). 

IP Pool Start Address

Enter the first of the continuous addresses in the public client IP address 

pool. 
Make sure the IP pool addresses are in the same range as the WAN IP 

address of the VSG. If they are in different IP ranges, this feature is 

disabled. If you are given a range of public IP addresses, do not include 

the VSG’s WAN IP address in the address pool. 

Pool Size

This field specifies the size or count of the IP address pool. Enter a 

number not greater than 512. 

Lease Time (Public)

Specify the time (in minutes between 1 and 71582788) a DHCP client is 

allowed to use an assigned IP address. When the lease time expires, the 

DHCP client is given a new, unused IP address.

E-mail Server Redirect

You can set the VSG to redirect and send subscriber's E-mail via a 

specified e-mail server. This feature allows subscribers to send E-mail 

via the local E-mail server when their default e-mail server is not working 

or prevented by relay restrictions.

Table 10   System Settings: Server  (continued)