Chapter 43 System

The following table describes the labels in this screen.

Table 199 Configuration > System > DNS > Service Control Rule Add

LABEL

DESCRIPTION

Create new

Use this to configure any new settings objects that you need to use in

Object

this screen.

 

 

Address

Select ALL to allow or deny any computer to send DNS queries to the

Object

ZyWALL.

 

Select a predefined address object to just allow or deny the computer

 

with the IP address that you specified to send DNS queries to the

 

ZyWALL.

 

 

Zone

Select ALL to allow or prevent DNS queries through any zones.

 

Select a predefined zone on which a DNS query to the ZyWALL is allowed

 

or denied.

 

 

Action

Select Accept to have the ZyWALL allow the DNS queries from the

 

specified computer.

 

Select Deny to have the ZyWALL reject the DNS queries from the

 

specified computer.

 

 

OK

Click OK to save your customized settings and exit this screen.

 

 

Cancel

Click Cancel to exit this screen without saving

 

 

43.7 WWW Overview

The following figure shows secure and insecure management of the ZyWALL coming in from the WAN. HTTPS and SSH access are secure. HTTP and Telnet access are not secure.

• See Section 6.7.1 on page 105 for related information on these screens.

Note: To allow the ZyWALL to be accessed from a specified computer using a service, make sure you do not have a service control rule or to-ZyWALL firewall rule to block that traffic.

•See To-ZyWALL Rules on page 375 for more on To-ZyWALL firewall rules.

•See Section 7.8 on page 129 for an example of configuring service control to block administrator HTTPS access from all zones except the LAN.

To stop a service from accessing the ZyWALL, clear Enable in the corresponding service screen.

43.7.1 Service Access Limitations

A service cannot be used to access the ZyWALL when:

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ZyWALL USG 20/20W User’s Guide