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Clamav installation Preparation for ClamAV installation Ensure that the EPEL repository has bee...

Set SSH protocol to 2 SSH has two protocols it may use, protocol 1 and protocol 2. The older pro...

Installing and configuring UFW (Uncomplicated Firewall) Add sudo in front of the commands if you...

Disable or remove server services that are not going to be utilized (e.g. FTP, DNS, LDAP, SMB, DH...

The removal of legacy services Check for legacy services To check for legacy services, use th...

Randomized virtual memory region placement Add the below line to /etc/sysctl.confkernel.randomiz...

Restricting Core Dumps Add the below to the end of /etc/security/limits.confroot hard core 0 Ad...

Network Time Protocol (NTP) configuration Synchronize the system clock with the command below a...

Setting up automatic updates Installing unattended-upgrades package Install unattended-upgrades...

Updating the server with the latest updates Adding additional repositories Enable any additiona...

Disable AppArmor and Apport Both AppArmor and Apport can can be safely disabled.  They cause mor...

Change the Default Shell /bin/sh is a symlink to /bin/dash, however we need /bin/bash, not /bin/...

Server Image Installation Browse to konsoleH and log in at Admin level Select or search for you...

Server Checklist Step √ To Do     Preparation 1   Install server image 2   Change...

Configure ClamAV for daily scans Create and edit the file clamscan_daily in the folder /etc/cron...

Install and configure Host Based IDS (Intrusion Detection System) "AIDE" Install AIDEyum -y inst...

Installation Run the command below to install Fail2Ban yum install fail2ban fail2ban-systemd C...

Set SSH permitemptypasswords to no Open the ssh configuration file with your editor.vi /etc/ssh/...

Disabling root login via SSH Disabling SSH root login will add an extra layer of security. It wo...

Disabling root login via SSH Disabling SSH root login will add an extra layer of security. It wo...