Chapter 16 Certificates
LTE Series User’s Guide
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16.3  Trusted CA
Click Security > Certificates > Trusted CA to open the following screen. This screen displays a summary list 
of certificates of the certification authorities that you have set the Zyxel Device to accept as trusted. The 
Zyxel Device accepts any valid certificate signed by a certification authority on this list as being 
trustworthy, which means you do not need to import any certificate that is signed by one of these 
certification authorities.
Note: A maximum of 4 certificates can be added.
Figure 152   Security > Certificates > Trusted CA
The following table describes the labels in this screen.
Signing Request This field displays the CSR (Certificate Signing Request) information of this certificate. The CSR will 
be provided to a certificate authority, and it includes information about the public key, 
organization name, domain name, location, and country of this certificate.
Back Click Back to return to the previous screen.
Table 78   Certificate Request: View (continued)
LABEL DESCRIPTION
Table 79   Security > Certificates > Trusted CA
LABEL DESCRIPTION
Import Certificate Click this button to open a screen where you can save the certificate of a certification 
authority that you trust to the Zyxel Device.
# This is the index number of the entry.
Name This field displays the name used to identify this certificate.
Subject This field displays information that identifies the owner of the certificate, such as Common 
Name (CN), OU (Organizational Unit or department), Organization (O), State (ST) and Country 
(C). It is recommended that each certificate have a unique subject information.
Type This field displays general information about the certificate. ca means that a Certification 
Authority signed the certificate.
Modify Click the View icon to open a screen with an in-depth list of information about the certificate 
(or certification request).
Click the Remove icon to delete the certificate (or certification request). You cannot delete a 
certificate that one or more features is configured to use.