First, ensure you have a user group, such as sshusers, that includes the users you want to allow SSH access. Restrict SSH access to a specific group of users by http://www.medidfraud.org/top-12-trends-in-data-breach-privacy-and-security/ adding the following directive to the /etc/ssh/sshd_config file. The firewall rules you set will block unwanted traffic or server manipulation. It is possible to…