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How to Install an SSH Certificate

An SSH (Secure Shell) is a security protocol that may require you to install an SSH certificate to allow a client computer to send encrypted data to a server. This security protocol enables secure "X.509" certificates to be used in conjunction with standard file transfer protocols, secure file transfers, and even web browsers. Follow these steps to install an SSH certificate.

Things You'll Need

  • Certificates to be installed
  • Client computers
  • Server
  • SSH software
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Instructions

    • 1

      Install an SSH client for your server's operating system. SSH Communications Security is a company that has all types of standard SSH clients. Read more at their website (see Resources below).

    • 2

      Acquire the desired certificates needed for your client machines and copy them to the server. Certificates may be copied specifically or extracted from "PKCS #7" files individually.

    • 3

      Enable certificate authentication in the "sshd2_config file: AllowedAuthentications publickey." This will enable certificate keys to be distributed with the certificate to each client computer.

    • 4

      Choose the certificate and the mapping file(s) in the "sshd2_config file:
      Pki , MapFile ". Next you'll have to define the "SOCKS" and "LADP" servers in the "sshd2_config file."

    • 5

      Create the map file for the certificate. It determines which certificates authorize logging into each account. That file has the following format: " ."

    • 6

      Configure the client computer to accept certificates using the appropriate SFTP or browser program. These programs usually come with standard security certificates, but specific certificates may be installed automatically from the server when the appropriate program is accessed.

Tips & Warnings

  • Make sure you have configured client browser software to accept certificates by prompting the user.

  • The "SOCKS" server must be defined properly if the certificate authorization services are located behind a firewall.

  • Make sure you've installed the proper certificates on the server before allowing users access to the programs that require those certificates.

  • There are many keywords that may be used in the map file. Make sure you use the proper keyword for the program that needs the certificate.

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