ZyXEL p-2802h-i1 Guia Do Utilizador

 Chapter 19 Remote Management Configuration

P-2802H(W)(L)-I Series User’s Guide

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 ZyXEL Device is used so that you may securely access the ZyXEL Device 
using the web configurator. The SSL protocol specifies that the SSL server (the ZyXEL 
Device) must always authenticate itself to the SSL client (the computer which requests the 
HTTPS connection with the ZyXEL Device), whereas the SSL client only should authenticate 
itself when the SSL server requires it to do so (select Authenticate Client Certificates in the 
REMOTE MGMT > WWW screen). Authenticate Client Certificates is optional and if 
selected means the SSL-client must send the ZyXEL Device a certificate. You must apply for a 
certificate for the browser from a CA that is a trusted CA on the ZyXEL Device.
Please refer to the following figure. 

1 HTTPS connection requests from an SSL-aware web browser go to port 443 (by default) 

on the ZyXEL Device’s WS (web server).

2 HTTP connection requests from a web browser go to port 80 (by default) on the ZyXEL 

Device’s WS (web server).  

Figure 147   HTTPS Implementation

"

If you disable the HTTP service in the REMOTE MGMT > WWW screen, then 
the ZyXEL Device blocks all HTTP connection attempts.