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RHCSA

KVM Virtualization Basics and KVM Guest Administration

RHCSA Series: Essentials of Virtualization and Guest Administration with KVM – Part 15

6 Comments

If you look up the word virtualize in a dictionary, you will find that it means “to create a virtual (rather than actual) version of something”. In computing, the term virtualization refers to the

Setup LDAP Server and Client Authentication

RHCSA Series: Setting Up LDAP-based Authentication in RHEL 7 – Part 14

34 Comments

We will begin this article by outlining some LDAP basics (what it is, where it is used and why) and show how to set up a LDAP server and configure a client to authenticate

RHCSA Exam: SELinux Essentials and Control FileSystem Access

RHCSA Series: Mandatory Access Control Essentials with SELinux in RHEL 7 – Part 13

1 Comment

During this series we have explored in detail at least two access control methods: standard ugo/rwx permissions (Manage Users and Groups – Part 3) and access control lists (Configure ACL’s on File Systems –

Automatic Kickstart Installation of RHEL 7

RHCSA Series: Automate RHEL 7 Installations Using ‘Kickstart’ – Part 12

1 Comment

Linux servers are rarely standalone boxes. Whether it is in a datacenter or in a lab environment, chances are that you have had to install several machines that will interact one with another in

Control Network Traffic with FirewallD and Iptables

RHCSA Series: Firewall Essentials and Network Traffic Control Using FirewallD and Iptables – Part 11

2 Comments

In simple words, a firewall is a security system that controls the incoming and outgoing traffic in a network based on a set of predefined rules (such as the packet destination / source or

Yum Package Management Cron Jobs Log Monitoring Linux

RHCSA Series: Yum Package Management, Automating Tasks with Cron and Monitoring System Logs – Part 10

2 Comments

In this article we will review how to install, update, and remove packages in Red Hat Enterprise Linux 7. We will also cover how to automate tasks using cron, and will finish this guide

Configuring and Securing Apache and FTP Server

RHCSA Series: Installing, Configuring and Securing a Web and FTP Server – Part 9

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A web server (also known as a HTTP server) is a service that handles content (most commonly web pages, but other types of documents as well) over to a client in a network. A

RHCSA: Secure SSH and Enable Network Services

RHCSA Series: Securing SSH, Setting Hostname and Enabling Network Services – Part 8

3 Comments

As a system administrator you will often have to log on to remote systems to perform a variety of administration tasks using a terminal emulator. You will rarely sit in front of a real

Configure ACL's and Mounting NFS / Samba Shares

RHCSA Series: Using ACLs (Access Control Lists) and Mounting Samba / NFS Shares – Part 7

6 Comments

In the last article (RHCSA series Part 6) we started explaining how to set up and configure local system storage using parted and ssm. We also discussed how to create and mount encrypted volumes

Configure and Encrypt System Storage

RHCSA Series: Using ‘Parted’ and ‘SSM’ to Configure and Encrypt System Storage – Part 6

8 Comments

In this article we will discuss how to set up and configure local system storage in Red Hat Enterprise Linux 7 using classic tools and introducing the System Storage Manager (also known as SSM),

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