User's Manual

Chapter 13 Certificates
P-660HW-Tx v3 Series User’s Guide
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information and public keys and then send the certification requests to a
certification authority.
Certificate File Formats
The certification authority certificate that you want to import has to be in one of
these file formats:
• Binary X.509: This is an ITU-T recommendation that defines the formats for
X.509 certificates.
• PEM (Base-64) encoded X.509: This Privacy Enhanced Mail format uses
lowercase letters, uppercase letters and numerals to convert a binary X.509
certificate into a printable form.
Finding Out More
See Section 13.3 on page 235 for technical background information on
certificates.
13.2 The Trusted CAs 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; thus you do not need to import any certificate that is signed by one
of these certification authorities. Click Security > Certificates to open the
Trusted CAs screen.
Figure 97 Trusted CAs