Zyxel-communications P-2608HWL-Dx Series Bedienungsanleitung PDF herunterladen (Seite 269)

P-2608HWL-Dx Series User’s Guide

Chapter 19 Certificates 269

The following table describes the labels in this screen.

Table 100 Trusted Remote Host Details

LABEL DESCRIPTION

Name This field displays the identifying name of this certificate. If you want to change

the name, type up to 31 characters to identify this key certificate. You may use

any character (not including spaces).

Certification Path Click the Refresh button to have this read-only text box display the end entity’s

own certificate and a list of certification authority certificates in the hierarchy of

certification authorities that validate a certificate’s issuing certification authority.

For a trusted host, the list consists of the end entity’s own certificate and the

default self-signed certificate that the ZyXEL Device uses to sign remote host

certificates.

Refresh Click Refresh to display the certification path.

Certificate Information These read-only fields display detailed information about the certificate.

Type This field displays general information about the certificate. With trusted remote

host certificates, this field always displays CA-signed. The ZyXEL Device is the

Certification Authority that signed the certificate. X.509 means that this

certificate was created and signed according to the ITU-T X.509

recommendation that defines the formats for public-key certificates.

Version This field displays the X.509 version number.

Serial Number This field displays the certificate’s identification number given by the device that

created the certificate.

Subject This field displays information that identifies the owner of the certificate, such

as Common Name (CN), Organizational Unit (OU), Organization (O) and

Country (C).

Issuer This field displays identifying information about the default self-signed

certificate on the ZyXEL Device that the ZyXEL Device uses to sign the trusted

remote host certificates.

Signature Algorithm This field displays the type of algorithm that the ZyXEL Device used to sign the

certificate, which is rsa-pkcs1-sha1 (RSA public-private key encryption

algorithm and the SHA1 hash algorithm).

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.

Key Algorithm This field displays the type of algorithm that was used to generate the

certificate’s key pair (the ZyXEL Device uses RSA encryption) and the length of

the key set in bits (1024 bits for example).

Subject Alternative

Name

This field displays the certificate’s owner‘s IP address (IP), domain name (DNS)

or e-mail address (EMAIL).

Key Usage This field displays for what functions the certificate’s key can be used. For

example, “DigitalSignature” means that the key can be used to sign certificates

and “KeyEncipherment” means that the key can be used to encrypt text.

Basic Constraint This field displays general information about the certificate. For example,

Subject Type=CA means that this is a certification authority’s certificate and

“Path Length Constraint=1” means that there can only be one certification

authority in the certificate’s path.

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