Chapter 15 Certificates
NWA50AX User’s Guide
136
15.3.2 Im po rt Truste d Ce rtific a te s
Click Co nfig ura tio n > O b je c t > Ce rtific a te > Truste d Ce rtific a te s > Impo rt to open the Impo rt Truste d
C e rtific a te s screen. Follow the instructions in this screen to save a trusted certificate to the Zyxel Device.
Note: You must remove any spaces from the certificate’s filename before you can import the
certificate.
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.
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 This read-only text box displays the certificate or certification request in Privacy Enhanced
Mail (PEM) format. PEM uses lowercase letters, uppercase letters and numerals to convert a
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 Certificate Click this button and then Sa ve in the File Downlo a d screen. The Sa ve As screen opens,
browse to the location that you want to use and click Sa ve .
OK Click O K to save your changes back to the Zyxel Device. You can only change the name.
Cancel Click Ca nc e l to quit and return to the Truste d Ce rtific a te s screen.
Table 59 Configuration > Object > Certificate > Trusted Certificates > Edit (continued)
LABEL DESCRIPTION
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