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2257 articles
How to configure secure Kerberized NFS Server ( RHEL / CentOS 7)
Setup Kerberized NFS share secured with kerberos authentication for LDAP Users using IPA server on RHEL / CentOS 7 Linux added security with sec=krb5p NFS …
linuxSamba Active Directory Setup
Step by step instructions to setup Samba Active Directory on Rocky Linux 8. Join WIndows Client to Samba Domain Controller
devopsAzure Site to Site VPN Connection
Step by step instructions to configure Azure site to site VPN connection with screenshots.
devopsKubernetes Networking Tutorial [Beginner to PRO]
Delve into the essentials of Kubernetes networking. Understand pod and container connectivity, learn about service types and their access modes, explore …
linuxSolved: DHCPDISCOVER fails with 'no free leases' in Linux
You can fix the no free leases error from DHCPDISCOVER by either add more IP address to the range or by cleaning up the lease files for unused entries
networkingCheck OPEN Ports in Linux [Like a PRO]
Use nmap, hping3 and netcat (nc) to check open ports in Linux. You can also use netcat to test firewall rules to make sure if a port is open or closed in a …
securitySolved: Change MAC Address in Linux [Temp & Persistent]
Step by Step instructions to change MAC address in Linux. Both temporary and permanent to survive reboot. Assign random or custom defined MAC Address with …
securityHow to track IP address using an Image
step by step instructions to track ip address of any computer using an image.
devopsHelm Named Templates in Kubernetes [In-Depth Tutorial]
Dive deep into the creation and usage of Named Templates in Helm3. Understand how to define and call Named Templates, pass values to them, use control …
programmingGetting started with Laravel Debugbar
Laravel Debugbar is a robust debugging and profiling toolbar for Laravel applications. It provides comprehensive insights into your application's …
linuxExecute long running commands over SSH
Learn how to execute long running commands over SSH to manage remote systems effectively. Discover methods like nohup, setsid, byobu, and disown, and …
securityL3MON - Hack Android Mobile Remotely [Step-by-Step]
Step by step instructions to hack android remotely using l3mon RAT i.e Remote Administration Tool. Install malware on the android to access the mobile.
linuxSetup Master Slave BIND DNS server Rocky Linux 8
Step by Step instructions to configure Master Slave BIND DNS Server on Rocky Linux 8.
devopsSolved 'No valid host was found. not enough hosts available'
Fix Overcloud "No valid host was found. There are not enough hosts available" on Undercloud OpenStack with Red Hat — baremetal, IPMI, compute services, and …
securityFail2ban SSH config on Ubuntu 18.04 and RHEL/CentOS 8
5 steps guide to Install and configure fail2ban SSH on RHEL/CentOS 7/8 Ubuntu 18 with examples. Fail2ban log rotation list banned ip firewall iptables …
system-administrationConfigure postfix mail server and client with examples (CentOS/RHEL 7/8)
Configure postfix mail server and client using SMTP relay server. Check SMTP server configuration and connection with SWAKS. SMTP Mail Server CentOS/RHEL …
linuxA Complete Guide To Magento Security
When you dive into the realm of eСommerce, Magento is a name that frequently pops up, standing out as a cornerstone in the industry. But with great power
linuxStep-by-Step: Upgrade multiple HPE VC firmware with SUM
Step by step guide to upgrade multiple HPE VC firmware (Virtual Connect) using Smart Update Manager. Perform parallel upgrade of the VC using SUM.
storageTutorial: What is GlusterFS shared storage and types of volumes
What is GlusterFS Tutorial Replication Types of Volumes. Distributed Volume Replicated Volume. RHEL CentOS 8 glusterfs shared storage. gluster file system …
linuxHow to set GRUB2 password using grub2-setpassword (RHEL / CentOS 7)
Steps to set grub2 password using grub2-setpassword for unautorized modification of grub2 entries. Also steps to remove grub2 password from rhel /centos 7
linuxHow to change IO scheduler permanently in Linux
Steps to change IO scheduler permanently in Linux using tuned profile and grub2 kernel or you can change IO scheduler using /sys/block/sdX/queue/scheduler
linux/etc/network/interfaces missing in Ubuntu
If you are using Ubuntu, you must have encountered the "/etc/network/interfaces missing" error. Because Ubuntu 18.04 and above uses netplan to configure …
linuxLinux find File using the command-line [8 Different Ways]
In this tutorial we have covered 8 different methods to find file in Linux using filename, file extension, file type, file size, file's modification date, …
linuxBest practices to update kernel-core in RHEL/CentOS 8
Steps and best practices to update kernel-core and kernel-modules in Red Hat or CentOS 8 using yum and dnf. List and verify default kernel version
linuxInstall MongoDB on Rocky Linux 8.4 (Step-by-Step)
In this tutorial we will cover the steps to install MongoDB on Rocky Linux.
system-administrationIntegrate Samba with Active Directory (Linux & Windows)
To integrate Samba share with Active Directory we can use winbind to join Linux client with domain controller and use smbclient to access the windows share …
system-administration3 easy steps to configure gmail smtp relay with postfix
Step by step tutorial to configure postfix using third party gmail smtp relay to send mails to external network. Use SASL with Google 2-Step Authentication …
linuxInstall & Configure FreeIPA Server in RHEL/CentOS 8
steps to install and configure freeipa server in rhel 8 the packages necessary for installing an Identity Management server are shipped with IDM server …
system-administrationInstall & configure FreeIPA Server & Client (RHEL/CentOS 7)
Step by Step guide tutorial on how to install and configure FreeIPA, ipa server LDAP, kerberos, DNS and IPA client on RHEL/CentOS 7 Linux with GUI and CLI
devopsWhat is fencing | Setup KVM cluster fencing RHEL CentOS 8
Step-by-Step Tutorial to configure cluster fencing, stonith device in RHEL and CentOS 8 Linux. Use fence_xvm to fence KVM HA Cluster nodes. Setup pacemaker …