Chapter 29 System
NXC Series User’s Guide
346
Figure 205 Secure and Insecure Service Access From the WAN
29.7.1 Service Access Limitations
A service cannot be used to access the NXC when:
1 You have disabled that service in the corresponding screen.
2 The allowed IP address (address object) in the Service Control table does not match the client IP
address (the NXC disallows the session).
3 The IP address (address object) in the Service Control table is not in the allowed zone or the action is set
to Deny.
29.7.2 System Timeout
There is a lease timeout for administrators. The NXC 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 NXC for authentication again when the reauthentication time
expires.
You can change the timeout settings in the User/Group screens.
29.7.3 HTTPS
You can set the NXC 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 27 on page 316 for more
information).
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