ZyWALL 2 Series User’s Guide

 

Table 15-12 Trusted Remote Host Details

LABEL

DESCRIPTION

 

 

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

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

Name

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. You cannot use this value to verify that this is the remote host’s actual

 

certificate because the ZyWALL has signed the certificate; thus causing this value

 

to be different from that of the remote hosts actual certificate. See section 15.13.1

 

for how to verify a remote host’s certificate.

SHA1 Fingerprint

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

 

SHA1 algorithm. You cannot use this value to verify that this is the remote host’s

 

actual certificate because the ZyWALL has signed the certificate; thus causing this

 

value to be different from that of the remote hosts actual certificate. See section

 

15.13.1 for how to verify a remote host’s certificate.

 

 

Certificate in PEM

This read-only text box displays the certificate or certification request in Privacy

(Base-64) Encoded

Enhanced Mail (PEM) format. PEM uses 64 ASCII characters to convert the binary

Format

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 ZyWALL. 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.

15-28

Certificates