Zimbra Fail2ban Setup How to install and configure Fail2ban for Zimbra mail server on CentOS. Fail2Ban is an intrusion prevention software framework that protects computer servers from brute-force attacks. Install Fail2ban on CentOS 7: Ensure your system is up… Continue Reading
How to install Phoronix Test Suite on CentOS The Phoronix Test Suite is Open-Source Automated testing and benchmarking platform. The Phoronix Test Suite has access to more than 450 test profiles and over 100 test suites via OpenBenchmarking.org. First install… Continue Reading
How To Install and Configure Zabbix Agent on Linux – Red Hat Enterprise Linux / CentOS and Debian / Ubuntu Zabbix server requires to install Zabbix Agent on remote Windows and Linux systems. For collecting information and and provide to… Continue Reading
In this article I will show how to find how To find user who send a bulk Emails in Zimbra. If Zimbra server sends spam emails first you need find user or users who authenticated on the SMTP port and… Continue Reading
How do I scan for viruses with ClamAV? At first you have to update the virus definitions with: sudo freshclam Then you can scan for viruses. clamscan OPTIONS File/Folder If necessary start with root permissions: sudo clamscan. Examples: To check… Continue Reading
How To Monitor Disk Load in Linux iostat utility will help measure and monitor hard drive load: # iostat -dx /dev/sda 5 As result you can see output: How to Securely Wipe Hard Drive in Linux
How To Create a Sudo User CentOS Login into your server as root. If you already have user you can use usermod command ro add the user to the wheel group: # usermod -aG wheel username For testing sudo for that… Continue Reading
In this article you will learn how to check disk speed in Linux from terminal. We can check Linux disk (HDD or SSD) I/O performance with hdparm command. Hdparm is a command line utility for Linux to set and view… Continue Reading
How To Install Htop on CentOS 7 In this article I will show how to Install htop on CentOS 7 Linux from EPEL repository. Htop is a one of the best an alternative tool for Linux top command. By default… Continue Reading
How to Start/Stop and Enable/Disable FirewallD CentOS 7 Start FirewallD Service # systemctl start firewalld Stop FirewallD Service # systemctl stop firewalld Check the Status of FirewallD # systemctl status firewalld Check the State of FirewallD # firewall-cmd –state… Continue Reading