Chapter 44 Service Control
44.1.1 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.
44.1.2System 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.
44.2 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).
It relies upon certificates, public keys, and private keys (see Chapter 40 on page 545 for more information).
HTTPS on the ZyWALL is used so that you can securely access the ZyWALL using the web configurator. The SSL protocol specifies that the HTTPS server (the ZyWALL) must always authenticate itself to the HTTPS client (the computer which requests the HTTPS connection with the ZyWALL), whereas the HTTPS client only should authenticate itself when the HTTPS server requires it to do so (select Authenticate Client Certificates in the WWW screen). Authenticate Client Certificates is optional and if selected means the HTTPS client must send the ZyWALL a certificate. You must apply for a certificate for the browser from a CA that is a trusted CA on the ZyWALL.
Please refer to the following figure.
1HTTPS connection requests from an
2HTTP connection requests from a web browser go to port 80 (by default) on the ZyWALL’s web server.
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