Note: This assumes that you specified --prefix=/usr in the configure command, or installed from the binary package.
  1. Edit the sshd_config file:

    sudo vi /etc/ssh/sshd_config

  2. Add these lines to the end of the file: 
    #enable pingid for all users
ForceCommand /usr/sbin/pingid_fc
    Note:

    Disable PermitTunnel and AllowTcpForwarding in the sshd_config file because tunneling and port forwarding are performed before PingID authentication is triggered.

  3. Restart the sshd service:

    sudo service sshd restart