Import RPM Signing GPG keys on CentOS 8
GPG Keys or GNU Privacy Guard is used to making sure that we are getting the right package from a trusted repository.
Security
All types of Linux security topics will be covered.
Install Wazuh Open Source Security Analytics
Install production-ready Wazuh OpenSource security analytics tool to monitor your critical production environment.
Migrate existing Iptables to Nftables in RHEL8/CentOS
Iptables can be migrated to nftables without spending time on writing it. Red Hat 8 based operating system provides translate tool to migrate the rules.
How to start using SELinux or Security-Enhanced Linux
SELinux is one of security layer in Linux which protect the directory, files, process and ports with its own labels by preventing unauthorised access.
Generate a CSR Certificate Signing Request in Linux
Generating a Certificate Signing Request (CSR) for Secure Sockets Layer (SSL) Certificate required when we need to sign with a Certificate Authority (CA).
How to Safely remove a Luks encrypted disk from RedHat 6, 7 Linux and variants
In this guide, we are about to see how to safely remove a Luks encrypted disk from RedHat Enterprise Linux 6, 7 and variant Linux distributions. The steps are just reverse to the creation order. Before starting with removing anything first priority we need to back-up every content from encrypted partition to any other location/File … Read more
Creating Luks Encrypted filesystem in Linux | 1 Easy guide
A quick guide on how to create an encrypted file system in Red Hat Enterprise Linux 7 and other Linux Variants using Luks.
Granting Access control List (ACL) for a user on a file in Solaris 11
In this guide let us see how to provide special permission for a user on file or directory by using ACL. # chmod A+user:jack:read_data/write_data/execute:allow /home/export/sysadmin/ -bash-4.1$ ls -v /home/export/sysadmin/ total 4 -rw-r–r– 1 jack staff 0 Dec 22 10:32 1111 0:owner@:read_data/write_data/append_data/read_xattr/write_xattr /read_attributes/write_attributes/read_acl/write_acl/write_owner /synchronize:allow 1:group@:read_data/read_xattr/read_attributes/read_acl/synchronize:allow 2:everyone@:read_data/read_xattr/read_attributes/read_acl/synchronize :allow This is similar to setfacl command in Linux.
Adding exclusion list for Symantec NetBackup client Backup
In this guide let us see how to exclude some of the filesystems, directories, files from Symantec NetBackup during full backup or increment backup. In Enterprise backup solution SNBU we have the option to exclude the list of files or folders by creating a file under /usr/openv/netbackup/exclude_list and it needs to contain all the exclusion list. … Read more
How to Install OSSEC Host Intrusion Detection client in Linux and Solaris
OSSEC is a Host-based Intrusion Detection System available for Linux, Solaris, FreeBSD, OpenBSD, Mac OS X etc. It has the feature to perform as log analysis, rootkit detection, real-time alerting system. In this guide, we are going to see how to install OSSEC in Red Hat Linux and Variants. By following we are going to … Read more
Installing Symantec Endpoint Protection in Linux Client
Symantec Endpoint Protection or SEP is a security software especially for anti-malware, intrusion with firewall features for desktops and servers.
How to Configure Sudo email alert
Introduction Sudo email alert, If we need to get an alert when some user executes some command which not suppose to run. Or if some user not at all have sudo privilege and they try to get an administrative escalation by running sudo. This all can be get monitored instantly with the help of sudo … Read more