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ZyXEL Communications P-793H v3 - Verifying a Certificate

ZyXEL Communications P-793H v3
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Chapter 14 Certificates
P-79X Series User’s Guide
151
Factory Default Certificate
The P-79X generates its own unique self-signed certificate when you first turn it on. This certificate
is referred to in the GUI as the factory default certificate.
14.1.2 Verifying a Certificate
Before you import a trusted certificate into the P-79X, you should verify that you have the correct
certificate. You can do this using the certificate’s fingerprint. A certificate’s fingerprint is a message
digest calculated using the MD5 or SHA1 algorithm. The following procedure describes how to check
a certificate’s fingerprint to verify that you have the actual certificate.
1 Browse to where you have the certificate saved on your computer.
2 Make sure that the certificate has a “.cer” or “.crt” file name extension.
Figure 89 Remote Host Certificates
3 Double-click the certificate’s icon to open the Certificate window. Click the Details tab and scroll
down to the Thumbprint Algorithm and Thumbprint fields.
Figure 90 Certificate Details
4 Use a secure method to verify that the certificate owner has the same information in the
Thumbprint Algorithm and Thumbprint fields. The secure method may very based on your
situation. Possible examples would be over the telephone or through an HTTPS connection.

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