Chapter 29 System
NXC Series User’s Guide
347
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.
2 HTTP connection requests from a web browser go to port 80 (by default) on the NXC’s web server.
Figure 206 HTTP/HTTPS Implementation
Note: If you disable HTTP in the WWW screen, then the NXC blocks all HTTP connection
attempts.
29.7.4 Configuring WWW Service Control
Click Configuration > System > WWW to open the WWW screen. Use this screen to specify from which
zones you can access the NXC using HTTP or HTTPS. You can also specify which IP addresses the access
can come from.
Note: Admin Service Control deals with management access (to the Web Configurator).
User Service Control deals with user access to the NXC.
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