ZyXEL ISG50-PSTN User Guide - Page 655
Table 259, Label, Description
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Chapter 50 Certificates 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 DESCRIPTION PKI Storage Space in Use 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. Edit Double-click an entry or select it and click Edit to open a screen with an in-depth list of information about the certificate. Remove 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. Object References 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 Section 12.3.2 on page 246 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 ISG50. Refresh Click this button to display the current validity status of the certificates. ISG50 User's Guide 655