Generate an SSL/HTTPS key

During the install process, PaperCut NG/MF generates a self-signed key/certificate issued for the host's machine name. This key is used by default when the system is accessed via HTTPS on port 9192.

The default SSL certificateSSL certificates are small data files that digitally bind a cryptographic key to an organization’s details, such as a company's domain name, your company name, your address, your city, your state and your country. When installed on a web server, it activates the padlock and the HTTPS protocol (over port 443) and allows secure connections from a web server to a browser. When a browser connects to a secure site it retrieves the site's SSL certificate and checks that it has not expired, it has been issued by a Certification Authority the browser trusts, and that it is being used by the website for which it has been issued. If it fails on any one of these checks the browser will display a warning to the end user letting them know that the site is not secured by SSL. SSL certificates can be either self-signed or CA signed. provides good security, however, users will be presented with the following warnings when they access the HTTPS site using a fully-qualified domain name:

  • Domain mismatch
  • The security certificate presented by this website was not issued by a trusted certificate authority

You can, however, eliminate these warnings to provide a smoother experience for the end users.

To avoid the:


Share your findings and experience with other PaperCut users. Feel free to add comments and suggestions about this Knowledge Base article. Please don't use this for support requests.