ZyXEL 2WG 사용자 가이드

 Chapter 16 Certificates Screens

ZyWALL 2WG User’s Guide

Issuer

This field displays identifying information about the certificate’s issuing 

certification authority, such as Common Name, Organizational Unit, 

Organization and Country. 
With self-signed certificates, this is the same as the Subject Name field.

Signature Algorithm

This field displays the type of algorithm that was used to sign the certificate. The 

ZyWALL uses rsa-pkcs1-sha1 (RSA public-private key encryption algorithm and 

the SHA1 hash algorithm). Some certification authorities may use rsa-pkcs1-

md5 (RSA public-private key encryption algorithm and the MD5 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 ZyWALL uses RSA encryption) and the length of the 

key set in bits (1024 bits for example).

Subject Alternative 

Name

This field displays the certificate 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 ZyWALL calculated using the 

MD5 algorithm. 

SHA1 Fingerprint

This is the certificate’s message digest that the ZyWALL calculated using the 

SHA1 algorithm. 

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 a certification request into a certification authority’s web 

page, an e-mail that you send to the certification authority or a text editor and 

save the file on a management computer for later manual enrollment.
You can copy and paste a certificate into an e-mail to send to friends or 

colleagues or you can copy and paste a certificate into a text editor and save the 

file on a management computer for later distribution (via floppy disk for 

example).

Apply

Click Apply to save your changes back to the ZyWALL. You can only change 

the name, except in the case of a self-signed certificate, which you can also set 

to be the default self-signed certificate that signs the imported trusted remote 

host certificates.

Cancel

Click Cancel to quit and return to the My Certificates screen.

Table 98   SECURITY > CERTIFICATES > My Certificates > Details (continued)