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P-662H/HW-D Series User’s Guide
286 Chapter 17 Certificates
17.15 Directory Servers
Click Security > Certificates > Directory Servers to open the Directory Servers screen.
This screen displays a summary list of directory servers (that contain lists of valid and revoked
certificates) that have been saved into the ZyXEL Device. If you decide to have the ZyXEL
Device check incoming certificates against the issuing certification authority’s list of revoked
certificates, the ZyXEL Device first checks the server(s) listed in the CRL Distribution
Points field of the incoming certificate. If the certificate does not list a server or the listed
server is not available, the ZyXEL Device checks the servers listed here.
MD5 Fingerprint This is the certificate’s message digest that the ZyXEL Device calculated using
the MD5 algorithm. You cannot use this value to verify that this is the remote
host’s actual certificate because the ZyXEL Device has signed the certificate;
thus causing this value to be different from that of the remote hosts actual
certificate. See Section 17.12 on page 282 for how to verify a remote host’s
certificate.
SHA1 Fingerprint This is the certificate’s message digest that the ZyXEL Device calculated using
the SHA1 algorithm. You cannot use this value to verify that this is the remote
host’s actual certificate because the ZyXEL Device has signed the certificate;
thus causing this value to be different from that of the remote hosts actual
certificate. See Section 17.12 on page 282 for how to verify a remote host’s
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).
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 of the certificate.
Cancel Click Cancel to quit configuring this screen and return to the Trusted Remote
Hosts screen.
Table 110 Trusted Remote Host Details (continued)
LABEL DESCRIPTION