Avaya Business Secure Router 222 Configuration - Basics Manuel d'utilisateur télécharger pdf (Page 286)

286 Chapter 14 Certificates

NN47922-500

Verifying a certificate of a trusted remote host

Certificates issued by certification authorities have the certification authority’s

signature for you to check. Self-signed certificates only have the signature of the

host itself. This means that you must be very careful when deciding to import (and

thereby trust) a remote host’s self-signed certificate.

Trusted remote host certificate fingerprints

A certificate’s fingerprints are message digests calculated using the MD5 or

SHA1 algorithms. The following procedure describes how to use a certificate’s

fingerprint to verify that you have the remote host’s actual certificate.

1 Browse to where you have the remote host’s certificate saved on your

computer.

2 Make sure that the certificate has a “.cer” or “.crt” file name extension.

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), or C (Country). Nortel recommends that

each certificate have unique subject information.

Valid From This field displays the date that the certificate becomes applicable. The

text displays in red and includes a Not Yet Valid! message if the

certificate has not yet become applicable.

Valid To This field displays the date that the certificate expires. The text displays

in red and includes an Expiring! or Expired! message if the certificate is

about to expire or has already expired.

Modify Click the details icon to open a screen with an in-depth list of

information about the certificate.

Click the delete icon to remove the certificate. A window displays asking

you to confirm that you want to delete the certificate. Note that

subsequent certificates move up by one when you take this action. You

cannot delete a certificate that is currently in use.

Import Click Import to open a screen where you can save the certificate of a

remote host (which you trust) from your computer to the Business

Secure Router.

Refresh Click this button to display the current validity status of the certificates.

Table 73 Trusted Remote Hosts

Label Description

1 2 ... 281 282 283 284 285 286 287 288 289 290 291 ... 450 451

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Avaya Business Secure Router 222 Configuration - Basics Manuel d'utilisateur Page 286