Chapter 33 System
NXC5200 User’s Guide
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33.6.2 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.
33.6.3 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
for more information).
HTTPS on the NXC is used so that you can securely access the NXC using the Web
Configurator. The SSL protocol specifies that the HTTPS server (the NXC) must
always authenticate itself to the HTTPS client (the computer which requests the
HTTPS connection with the NXC), 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
NXC a certificate. You must apply for a certificate for the browser from a CA that is
a trusted CA on the NXC.
Please refer to the following figure.
1
HTTPS connection requests from an SSL-aware web browser go to port 443 (by
default) on the NXC’s web server.