Chapter 19 Certificates
Certification authorities maintain directory servers with databases of valid and revoked certificates. A directory of certificates that have been revoked before the scheduled expiration is called a CRL (Certificate Revocation List). The ZyXEL Device can check a peer’s certificate against a directory server’s list of revoked certificates. The framework of servers, software, procedures and policies that handles keys is called PKI
19.1.1 Advantages of Certificates
Certificates offer the following benefits.
•The ZyXEL Device only has to store the certificates of the certification authorities that you decide to trust, no matter how many devices you need to authenticate.
•Key distribution is simple and very secure since you can freely distribute public keys and you never need to transmit private keys.
19.2Self-signed Certificates
You can have the ZyXEL Device act as a certification authority and sign its own certificates.
19.3 Configuration Summary
This section summarizes how to manage certificates on the ZyXEL Device.
Figure 169 Certificate Configuration Overview
Use the My Certificates screens to generate and export
Use the Trusted CAs screens to save CA certificates to the ZyXEL Device. Use the Trusted Remote Hosts screens to import
Use the Directory Servers screen to configure a list of addresses of directory servers (that contain lists of valid and revoked certificates).
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