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openssl-genrsa: Generate RSA Private Key
openssl-genrsa is part of the OpenSSL toolkit and is a command used to generate a private key for encryption using the RSA algorithm. This key is utilized in various security applications such as public-key cryptography, digital signatures, and SSL/TLS certificate generation.
perl: Perl Language Interpreter
Perl is a powerful scripting language used in various fields such as text processing, system administration, and web development. It offers particularly strong capabilities for text manipulation based on regular expressions and allows for rapid development due to its flexible syntax.
psql: PostgreSQL Interactive Terminal
psql is a command-line client tool that allows you to connect to PostgreSQL databases, execute SQL queries, manage database objects, and retrieve metadata. It supports both interactive and script execution modes.
ssh-scan: SSH Server Security Scanner
ssh-scan is a tool that analyzes the security settings of SSH servers, checking supported encryption algorithms, key exchange methods, host keys, and identifying potential vulnerabilities. It is useful for security audits and hardening.
terraform: Infrastructure Provisioning and Management
Terraform is an open-source Infrastructure as Code (IaC) tool developed by HashiCorp. It allows you to safely and efficiently provision and manage cloud and on-premises resources using code. You define your desired infrastructure state through declarative configuration files, and Terraform automatically plans and executes the steps to reach that state.
Mastering the ufw Command
`ufw` (Uncomplicated Firewall) is a command that makes it easy to manage firewalls in Ubuntu/Debian environments. It is important to fully understand its basic operation principles and options as it is the first step in server security.
yum: RPM Package Management
yum (Yellowdog Updater, Modified) is a command-line package management utility used on RPM-based Linux systems for software package installation, updates, removal, and dependency resolution. It automates these tasks, making it easier for users to manage software. It was widely used in CentOS, RHEL, and older versions of Fedora.