ZyXEL Communications P-870HW-I User Manual

P-870HW-I1 User’s Guide

Chapter 13 Certificates

175

After you click Apply, the following screen appears.

Key Length

Select a number from the drop-down list box to determine how many bits the 

key should use (512 to 2048). The longer the key, the more secure it is. A 

longer key also uses more PKI storage space.

Enrollment Options

These radio buttons deal with how and when the certificate is to be generated.

Create a self-signed 

certificate

Select this to have the ZyXEL Device generate the certificate and act as the 

Certification Authority (CA) itself. This way you do not need to apply to a 

certification authority for certificates.

Create a certification 

request and save it 

locally for later manual 

enrollment

Select this to have the ZyXEL Device generate and store a request for a 

certificate. Use the My Certificate Details screen to view the certification 

request and copy it to send to the certification authority.
Copy the certification request from the Edit My Certificate screen and then 

send it to the certification authority.

Create a certification 

request and enroll for 

a certificate 

immediately online

Select this to have the ZyXEL Device generate a request for a certificate and 

apply to a certification authority for a certificate. 
You must have the certification authority’s certificate already imported in the 

Trusted CAs screen.
When you select this option, you must select the certification authority’s 

enrollment protocol and the certification authority’s certificate from the drop-

down list boxes and enter the certification authority’s server address. You also 

need to fill in the Reference Number and Key if the certification authority 

requires them. 

Enrollment Protocol

Select the certification authority’s enrollment protocol from the drop-down list 

box.
Simple Certificate Enrollment Protocol (SCEP) is a TCP-based enrollment 

protocol that was developed by VeriSign and Cisco.
Certificate Management Protocol (CMP) is a TCP-based enrollment protocol 

that was developed by the Public Key Infrastructure X.509 working group of 

the Internet Engineering Task Force (IETF) and is specified in RFC 2510.

CA Server Address 

Enter the IP address (or URL) of the certification authority server.

CA Certificate

Select the certification authority’s certificate from the CA Certificate drop-

down list box.
You must have the certification authority’s certificate already imported in the 

Trusted CAs screen. Click Trusted CAs to go to the Trusted CAs screen 

where you can view (and manage) the ZyXEL Device's list of certificates of 

trusted certification authorities.

Request 

Authentication
Request Number

When you select Create a certification request and enroll for a certificate 

immediately online, the certification authority may want you to include a 

reference number and key to identify you when you send a certification 

request. Fill in both the Reference Number and the Key fields if your 

certification authority uses CMP enrollment protocol. Just fill in the Key field if 

your certification authority uses the SCEP enrollment protocol. 

Key

Type the key that the certification authority gave you.

Export

Click this to save the certificate on your computer.

Apply

Click this to begin certificate or certification request generation.

Cancel

Click this to return to the previous screen without saving any changes.

Table 75   Security > Certificates > My Certificates > Create (continued)