ZyXEL Communications ZyWALL 1000 User Manual

 Chapter 40 Certificates

ZyWALL USG 1000 User’s Guide

Click 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 authority’s list of revoked certificates before trusting a certificate issued 
by the certification authority.

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.

(icons)

Click the Edit icon to open a screen with an in-depth list of information about the 

certificate.
The ZyWALL keeps all of your certificates unless you specifically delete them. 

Uploading a new firmware or default configuration file does not delete your 

certificates.
Click the Delete icon to remove a certificate. A window displays asking you to 

confirm that you want to delete the certificates. Note that subsequent certificates 

move up by one when you take this action.

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 188   Object > Certificate > Trusted Certificates (continued)