Chapter 37 System

37.7 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.

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 266 for more on To-ZyWALL firewall rules.

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

37.7.1 Service Access Limitations

A service cannot be used to access the ZyWALL when:

1You have disabled that service in the corresponding screen.

2The allowed IP address (address object) in the Service Control table does not match the client IP address (the ZyWALL disallows the session).

3The IP address (address object) in the Service Control table is not in the allowed zone or the action is set to Deny.

4There is a firewall rule that blocks it.

37.7.2System Timeout

There is a lease timeout for administrators. The ZyWALL automatically logs you out if the management session remains idle for longer than this timeout period. The management session does not time out when a statistics screen is polling.

Each user is also forced to log in the ZyWALL for authentication again when the reauthentication time expires.

You can change the timeout settings in the User/Group screens.

37.7.3 HTTPS

You can set the ZyWALL to use HTTP or HTTPS (HTTPS adds security) for Web Configurator sessions. Specify which zones allow Web Configurator access and from which IP address the access can come.

HTTPS (HyperText Transfer Protocol over Secure Socket Layer, or HTTP over SSL) is a web protocol that encrypts and decrypts web pages. Secure Socket Layer (SSL) is an application-level protocol that enables secure transactions of data by ensuring confidentiality (an unauthorized party cannot read the transferred data), authentication (one party can identify the other party) and data integrity (you know if data has been changed).

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ZyWALL 110/310/1100 Series User’s Guide