Www Overview; Service Access Limitations; System Timeout - ZyXEL Communications USG40 User Manual

Table 355 Configuration > System > DNS > Service Control Rule Add (continued)
LABEL
Action
OK
Cancel

43.7 WWW Overview

The following figure shows secure and insecure management of the ZyWALL/USG coming in from
the WAN. HTTPS and SSH access are secure. HTTP and Telnet access are not secure.
Note: To allow the ZyWALL/USG to be accessed from a specified computer using a
service, make sure you do not have a service control rule or to-ZyWALL/USG
security policy rule to block that traffic.
To stop a service from accessing the ZyWALL/USG, clear Enable in the corresponding service
screen.

43.7.1 Service Access Limitations

A service cannot be used to access the ZyWALL/USG when:
You have disabled that service in the corresponding screen.
1
The allowed IP address (address object) in the Service Control table does not match the client IP
2
address (the ZyWALL/USG disallows the session).
The IP address (address object) in the Service Control table is not in the allowed zone or the
3
action is set to Deny.
There is a security policy rule that blocks it.
4

43.7.2 System Timeout

There is a lease timeout for administrators. The ZyWALL/USG 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/USG for authentication again when the
reauthentication time expires.
You can change the timeout settings in the User/Group screens.
Chapter 43 System
DESCRIPTION
Select Accept to have the ZyWALL/USG allow the DNS queries from the specified
computer.
Select Deny to have the ZyWALL/USG reject the DNS queries from the specified computer.
Click OK to save your customized settings and exit this screen.
Click Cancel to exit this screen without saving
ZyWALL/USG Series User's Guide
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