Service Access Limitations; System Timeout; Https - ZyXEL Communications NWA5121-N User Manual

Figure 74 Secure and Insecure Service Access From the WAN

13.4.1 Service Access Limitations

A service cannot be used to access the NWA when you have disabled that service in the
corresponding screen.

13.4.2 System Timeout

There is a lease timeout for administrators. The NWA 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 NWA for authentication again when the reauthentication time
expires.
You can change the timeout settings in the User screens.

13.4.3 HTTPS

You can set the NWA to use HTTP or HTTPS (HTTPS adds security) for Web Configurator sessions.
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
information).
HTTPS on the NWA is used so that you can securely access the NWA using the Web Configurator.
The SSL protocol specifies that the HTTPS server (the NWA) must always authenticate itself to the
HTTPS client (the computer which requests the HTTPS connection with the NWA), 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 NWA a certificate. You must apply
for a certificate for the browser from a CA that is a trusted CA on the NWA.
Chapter 13 System
NWA5120 Series User's Guide
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