ZyXEL Communications 1000 User Manual

Chapter 46 Certificates

ZyWALL USG 1000 User’s Guide

Click Configuration > Object > Certificate > Trusted Certificates and then a 
certificate’s Edit icon to open the Trusted Certificates Edit screen. Use this 
screen to view in-depth information about the certificate, change the certificate’s 
name and set whether or not you want the ZyWALL to check a certification 

Object 
References

You cannot delete certificates that any of the ZyWALL’s features are 
configured to use. Select an entry and click Object References to open 
a screen that shows which settings use the entry. See 

 for an example.

#

This field displays the certificate index number. The certificates are 
listed in alphabetical order. 

Name

This field displays the name used to identify this certificate. 

Subject

This field displays identifying information about the certificate’s owner, 
such as CN (Common Name), OU (Organizational Unit or department), 
O (Organization or company) and C (Country). It is recommended that 
each certificate have unique subject information.

Issuer

This field displays identifying information about the certificate’s issuing 
certification authority, such as a common name, organizational unit or 
department, organization or company and country. With self-signed 
certificates, this is the same information as in the Subject field.

Valid From

This field displays the date that the certificate becomes applicable. 

Valid To

This field displays the date that the certificate expires. The text displays 
in red and includes an Expired! message if the certificate has expired.

Import

Click Import to open a screen where you can save the certificate of a 
certification authority that you trust, from your computer to the 
ZyWALL.

Refresh

Click this button to display the current validity status of the certificates.

Table 213   Configuration > Object > Certificate > Trusted Certificates (continued)