ZyXEL VMG4927-B50A User Guide - Page 203
Overview, What You Need to Know, Local Certificates
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CHAPTER 20 Certificates 20.1 Overview The VMG can use certificates (also called digital IDs) to authenticate users. Certificates are based on public-private key pairs. A certificate contains the certificate owner's identity and public key. Certificates provide a way to exchange public keys for use in authentication. 20.1.1 What You Can Do in this Chapter • Use the Local Certificates screen to generate certification requests and import the VMG's CA-signed certificates (Section 20.4 on page 206). • Use the Trusted CA screen to save the certificates of trusted CAs to the VMG (Section 20.4 on page 206). 20.2 What You Need to Know The following terms and concepts may help as you read through this chapter. Certification Authority A Certification Authority (CA) issues certificates and guarantees the identity of each certificate owner. There are commercial certification authorities like CyberTrust or VeriSign and government certification authorities. The certification authority uses its private key to sign certificates. Anyone can then use the certification authority's public key to verify the certificates. You can use the VMG to generate certification requests that contain identifying information and public keys and then send the certification requests to a certification authority. 20.3 Local Certificates Click Security > Certificates to open the Local Certificates screen. This is the VMG's summary list of certificates and certification requests. VMG4927-B50A / VMG9827-B50A User's Guide 203