ZyXEL Communications ISG50-ISDN User Manual page 655

as being trustworthy; thus you do not need to import any certificate that is signed by one of these
certificates.
Figure 436 Configuration > Object > Certificate > Trusted Certificates
The following table describes the labels in this screen.
Table 259 Configuration > Object > Certificate > Trusted Certificates
LABEL
PKI Storage
Space in Use
Edit
Remove
Object
References
#
Name
Subject
Issuer
Valid From
Valid To
Import
Refresh
ISG50 User's Guide
DESCRIPTION
This bar displays the percentage of the ISG50's PKI storage space that is
currently in use. When the storage space is almost full, you should consider
deleting expired or unnecessary certificates before adding more certificates.
Double-click an entry or select it and click Edit to open a screen with an in-depth
list of information about the certificate.
The ISG50 keeps all of your certificates unless you specifically delete them.
Uploading a new firmware or default configuration file does not delete your
certificates. To remove an entry, select it and click Remove. The ISG50 confirms
you want to remove it before doing so. Subsequent certificates move up by one
when you take this action.
You cannot delete certificates that any of the ISG50'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
This field displays the certificate index number. The certificates are listed in
alphabetical order.
This field displays the name used to identify this certificate.
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.
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.
This field displays the date that the certificate becomes applicable.
This field displays the date that the certificate expires. The text displays in red
and includes an Expired! message if the certificate has expired.
Click Import to open a screen where you can save the certificate of a
certification authority that you trust, from your computer to the ISG50.
Click this button to display the current validity status of the certificates.
Section 12.3.2 on page 246
Chapter 50 Certificates
for an example.
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