Epson ES-C320W User Manual page 182

Administrator Information
❏ Self-signed Certificate
This is a certificate that the scanner signs and issues itself. It is also called the root certificate. Because the issuer
certifies itself, it is not reliable and cannot prevent impersonation.
Use it when making the security setting and performing simple SSL/TLS communication without the CA-
signed Certificate.
If you use this certificate for an SSL/TLS communication, a security alert may be displayed on a web browser
because the certificate is not registered on a web browser. You can use the Self-signed Certificate only for an
SSL/TLS communication.
Configuring a CA-signed Certificate
Obtaining a CA-signed Certificate
To obtain a CA-signed certificate, create a CSR (Certificate Signing Request) and apply it to certificate authority.
You can create a CSR using Web Config and a computer.
Follow the steps to create a CSR and obtain a CA-signed certificate using Web Config. When creating a CSR using
Web Config, a certificate is the PEM/DER format.
1. Access Web Config, and then select the Network Security tab. Next, select SSL/TLS > Certificate or IPsec/IP
Filtering > Client Certificate or IEEE802.1X > Client Certificate.
Whatever you choose, you can obtain the same certificate and use it in common.
2. Click Generate of CSR.
A CSR creating page is opened.
3. Enter a value for each item.
Note:
Available key length and abbreviations vary by a certificate authority. Create a request according to rules of each
certificate authority.
4. Click OK.
A completion message is displayed.
5. Select the Network Security tab. Next, select SSL/TLS > Certificate, or IPsec/IP Filtering > Client
Certificate or IEEE802.1X > Client Certificate.
6. Click one of the download buttons of CSR according to a specified format by each certificate authority to
download a CSR to a computer.
Important:
c
Do not generate a CSR again. If you do so, you may not be able to import an issued CA-signed Certificate.
7. Send the CSR to a certificate authority and obtain a CA-signed Certificate.
Follow the rules of each certificate authority on sending method and form.
8. Save the issued CA-signed Certificate to a computer connected to the scanner.
Obtaining a CA-signed Certificate is complete when you save a certificate to a destination.
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Advanced Security Settings
182
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Using a Digital Certificate