System-Administration

How to Install and Configure OpenSSH Server on Debian Securely managing remote access is essential for any server administrator. This guide will walk you through installing and configuring the OpenSSH server (sshd) on Debian. 1. Update Package List Keep your package index up to date: sudo apt-get update 2. Install OpenSSH Server Install the OpenSSH server package: sudo apt-get install openssh-server 3. Check SSH Service Status Verify that the SSH service is running: ...

How to Remove a Cluster and Revert Proxmox to Standalone Mode Need to revert your Proxmox node to a standalone setup? Here’s a step-by-step guide to help you safely remove the cluster configuration and restore standalone functionality. Steps to Remove a Cluster Stop Cluster Services Run the following commands to stop cluster-related services: systemctl stop pve-cluster corosync Force Local Mode Enable local mode for the Proxmox configuration file system: ...

Installing and Configuring UFW on Debian: A Step-by-Step Guide Uncomplicated Firewall (UFW) is a user-friendly interface for managing iptables on Linux systems. This guide walks you through installing and configuring UFW on Debian to secure your server. 1. Update Package List Make sure your package index is up to date: sudo apt-get update 2. Install UFW Install the UFW package using: sudo apt-get install ufw 3. Check UFW Status Verify UFW’s current status: ...

Here’s a more detailed explanation of each of my Docker containers and what they specialize in: 1. Authelia Authelia provides identity verification through single sign-on (SSO) and two-factor authentication (2FA). It’s ideal for securing your self-hosted services, requiring users to verify their identity before accessing them. You can configure authentication methods like one-time passwords (OTP) or push notifications. 2. CrowdSec CrowdSec is a modern intrusion detection system that analyzes server logs and identifies suspicious behaviors. It acts as a collaborative threat defense mechanism, sharing community-wide information to prevent cyberattacks. It can block harmful IP addresses, making it a robust tool for proactive security. ...