ZyXEL Communications P-2612HW-F1 -, Руководство пользователя

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Chapter 15 Certificates
P-2612HW Series User’s Guide
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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.
CRL Distribution
Points This field displays how many directory servers with Lists of revoked
certificates the issuing certification authority of this certificate makes
available. This field also displays the domain names or IP addresses of
the servers.
MD5 Fingerprint This is the certificate’s message digest that the ZyXEL Device
calculated using the MD5 algorithm. You can use this value to verify
with the certification authority (over the phone for example) that this
is actually their certificate.
SHA1 Fingerprint This is the certificate’s message digest that the ZyXEL Device
calculated using the SHA1 algorithm. You can use this value to verify
with the certification authority (over the phone for example) that this
is actually their certificate.
Certificate in PEM
(Base-64)
Encoded Format This read-only text box displays the certificate or certification request
in Privacy Enhanced Mail (PEM) format. PEM uses 64 ASCII characters
to convert the binary certificate into a printable form.
You can copy and paste the certificate into an e-mail to send to
friends or colleagues or you can copy and paste the certificate into a
text editor and save the file on a management computer for later
distribution (via floppy disk for example).
Back Click Back to return to the previous screen.
Export Click this button and then Save in the File Download screen. The
Save As screen opens, browse to the location that you want to use
and click Save.
Apply Click Apply to save your changes back to the ZyXEL Device. You can
only change the name and/or set whether or not you want the ZyXEL
Device to check the CRL that the certification authority issues before
trusting a certificate issued by the certification authority.
Cancel Click Cancel to quit and return to the Trusted CAs screen.
Table 101 Security > Certificates > Trusted CA > Details (continued)
LABEL DESCRIPTION