Knowledgebase

 Adding a range/block of ips

As an example to add a /24 253 ips to a linux server follow these setups. We'll use...

 Assign Additional IP Addresses in RedHat/CentOS

If you are using CPanel, you should add the IP addresses through WHM.  Do not follow these...

 Automation of Tasks

How to automate tasks on a Linux systemYou don't have to do that yourself!One of the main tasks...

 Basic Security

Basic SecurityFortunately, Linux has a lot of built in security that it inherits from its Unix...

 Block countries using the CSF Firewall

If you're on a VPS or Dedicated Server, the block using the Firewall is a better alternative. It...

 Check RAM and CPU info via SSH

Check CPU cat /proc/cpuinfo   Check Memory / RAM cat /proc/meminfo

 Copy files from server to server using SCP

Often times with a VPS or Dedicated Server you will need the ability to copy a single file or...

 Disable TRACE or TRACK method in Apache

Disabling the TRACE or TRACK methods from inside Apache are highly recommended and are now...

 File Permissions (chmod/chown)

Linux has inherited from UNIX the concept of ownerships and permissions for files. This is...

 Firewalls

FirewallsA machine connected to the Internet that isn't behind a firewall is a disaster waiting...

 General Introduction to Dedicated Servers

A dedicated server is a single computer on a web hosting network that is leased or rented, and...

 How can I check my hard disk usage in Linux?

Once you are connected to the server via SSH, run the following command:# df -hThis will output...

 How to Configure IPMI settings from a running Linux OS

Getting the OS prepared: 1) Install IPMItool. On CentOS Linux, install the OpenIPMI-tools,...

 How to Find Out Hard Disk Specs / Details on Linux

Linux comes with various commands to find out information about your hard drive. I recommend...

 How to disable Firewall on RHEL / CentOS / RedHat Linux

How do I turn off or disable firewall permanently under RHEL / Fedora Linux / Red Hat Enterprise...

 How to format and mount second hard drive on Linux

If you have two hard drives you can mount second hard drive to be used for (cPanel/WHM) backups...

 Installing Rkhunter (Rootkit Hunter) in RHEL, CentOS and Fedora

What Is Rkhunter? Rkhunter (Rootkit Hunter) is an open source Unix/Linux based scanner tool for...

 Linux: Commands for System Administration

The following commands are frequently used by systems administrators to keep an eye on what's...

 Linux: File Backup (tar/gzip)

Let's face it, computers aren't perfect. Linux is an "almost perfect" operating system, but...

 Linux: Linux File Systems

This is a beginner's course and one of the concepts that newcomers to Linux find different is...

 Linux: The 'cp' command

To show you how to copy files with Linux we talked about 'cp' in the lesson on aliases. 'cp' is...

 Linux: The 'mkdir' command

'mkdir' is the command for making directories. 'mkdir' may be familiar to MS-DOS users out...

 Linux: The 'mv' command

'mv' is a command that we're going to use to move files around or to rename them. 'mv' sort of...

 Linux: The 'rm' command

'rm' is for removing or deleting files. That means, sending them into non-existence, oblivion,...

 Linux: What Type of Installation?

What type of installation should I do? (Dual Boot / Live CD / Fresh Install / Virtual...

 Monitoring Hard Drive Health on Linux with smartmontools

S.M.A.R.T. is a system in modern hard drives designed to report conditions that may indicate...

 Open SSH

Working with OpenSSHBack when the Internet was a big, happy family with only a hundred or so...

 Providing Services Under Linux

Running A Name ServerThe most popular software for translating hard to remember IP addresses...

 SWAP Partition

Plunk that CD/DVD in your computers drive. Okay. Now is the moment of truth. We've got the...

 Setting up snort

Intrusion Detection with SnortSnort is a popular open source intrusion detection system. You can...

 SuperMicro ipmicfg utility on Linux

SuperMicro have a nice little utility called ipmicfg, which can be used to interact with the IPMI...

 Test If Linux Server SCSI / SATA Hard Disk Going Bad

One of our regular sends us a question: How can I test if my hard disk is going bad? I see few...

 cPanel tmp folder

By default, cPanel sets up a paltry <512MB /tmp disk. This isn't nearly large enough for large...