Tutorial Tag

host

  1. How To install Fail2ban "service SSH" on CentOS/RHEL 7

    By Vladimir Ivanov tagged in banned,centos 7,Fail2ban,failban,host,RHEL 7,Server,ssh
    About Fail2Ban Servers do not exist in isolation, and those servers with only the most basic SSH configuration can be vulnerable to brute force attacks. fail2ban provides a way to automatically protect the server from malicious signs. The program works by scanning through log files and reacting to offending actions such as repeated failed login attempts. Install Repository Because fail2ban is not available from CentOS, we should start by downloading the EPEL repository: First, you need to enable EPEL repository on your system. rpm -Uvh http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-1.noarch.rpm Update Once you are in the first...
  2. How To Secure ssh

    Here are couple ways to change your sshd default configuration settings and make / Secure ssh daemon more secure / restrictive and thus protect your server from unwanted intruders. NOTE: Everytime you make changes in the sshd configuration file you need to restart sshd. By doing so, your current connections will not be closed ! Make sure that you have a separate terminal open with root logged-in in case you do some misconfiguration. This way you will not lock yourself out of your own server. 1. Change a default port number to secure...