July 16, 2025
In a world where cyberattacks are becoming increasingly sophisticated, protecting remote access to servers and network equipment is of paramount importance. Simply opening ports for SSH, RDP, or web interfaces makes them targets for constant scanning and brute-force attacks.
Today, we’ll explore a powerful yet lesser-known technique that significantly improves the security of your MikroTik (and not only): Port Knocking. It’s not just about “closing ports,” but a smart system that makes your services invisible to most scanners and bots.
July 15, 2025
In the world of Linux and networking technologies, there are many subtle but critically important kernel settings. One such setting is rp_filter. This parameter, often overlooked, plays a key role in network security and correct packet routing. Let’s explore what it is, how it works, and why understanding it is essential for every system administrator.
What is rp_filter?
rp_filter stands for Reverse Path Filtering. It’s a Linux kernel mechanism that checks incoming network packets to verify whether they arrived on the interface through which a reply to the sender’s IP address would be routed.
July 14, 2025
Losing access to the WordPress administrator account can be a real headache. Sometimes, standard password recovery methods (via email) don’t work, especially if:
- You forgot both your login and password.
- The site’s mail sending function (
wp_mail) is broken. - The WordPress admin panel is broken or unavailable.
- The only access left is to the database (via MySQL client, phpMyAdmin, WP-CLI, etc.).
In this article, we’ll walk through a reliable and secure way to find the WordPress administrator directly in the database and reset their password using SQL. We’ll follow DevSecOps best practices to avoid breaking serialized data and minimize risks.
July 3, 2025
In this guide, I’ll show you how to easily install n8n, a powerful workflow automation tool, on your server with FastPanel using Docker Compose. FastPanel is great for managing web servers, and Docker Compose simplifies the deployment of complex applications like n8n with its dependencies (PostgreSQL and Redis).
What You’ll Need
- Your server with FastPanel installed.
- A domain or subdomain you’ll use to access n8n (e.g.,
n8n.yourdomain.com). - Basic knowledge of SSH and command line.
Step 1: Prepare the Server
Connect to your server via SSH and create a directory:
July 2, 2025
Hi friends! Today, we’re diving into the world of automation and deploying n8n — a powerful workflow automation tool. We’ll install it in Docker, and use HAProxy as a reliable reverse proxy to expose it to the internet.
This guide is created especially for beginners. We’ll go step by step, explaining every command so you not only do it, but also understand how everything works.
Why do we even need HAProxy?
You could just expose n8n’s ports to the internet, right? Yes, but that’s unsafe and inconvenient. HAProxy acts as both a guard and a dispatcher:
June 25, 2025
VPNCloud: Building Your Private Network in the Cloud
In a world where more and more services are moving to the cloud and remote work has become the norm, secure and private access to your resources is more important than ever. Traditional VPN services, while solving some problems, are often centralized and may not be the most flexible solution for creating your own secure network between multiple servers, devices, or even offices.
June 17, 2025
Sometimes it becomes necessary to route all outgoing traffic from a specific container through a proxy server. This can be useful for ensuring anonymity, bypassing geo-restrictions, or for testing network configurations. In this article, we’ll look at how to set up such a system using the tun2socks utility and iptables rules, as well as how to manage this process with systemd.
What is tun2socks?
tun2socks is a powerful tool that allows you to redirect network traffic intended for a TUN device through a SOCKS proxy. It creates a virtual network interface (TUN device), and all traffic flowing through it is encapsulated into a SOCKS connection. This is especially convenient when direct application-level proxying is impossible or undesirable.
June 16, 2025
There’s often a need to host a website, be it a personal blog, a test project, or a small service, directly on a home computer. This is convenient, economical, and provides full control. However, many face the problem of not having a “white” (public) IP address from their internet provider, making direct external access virtually impossible. And even if they do, it’s often dynamic, requiring constant updates via DDNS.
Don’t worry! Today, we’ll dive into the world of network technologies and show you how to overcome this limitation and publish your website online using a powerful and free tool from Cloudflare – Cloudflare Tunnel (formerly known as Argo Tunnel). You won’t need a white IP, port forwarding on your router, or other complex configurations!
June 13, 2025
Today, we’ll dive into the world of cloud technologies and learn how to deploy the Windows Server operating system on the Yandex.Cloud platform. This is an excellent opportunity for anyone looking to have their own server for various tasks, whether it’s for application testing, website deployment, or even Active Directory creation.
Important Note: Your Own Windows Server Image
Currently, Yandex.Cloud does not provide pre-built Windows Server images. This means we’ll need to prepare a Windows Server image locally, import it into Yandex.Cloud, and then create a virtual machine based on that image. This process requires a bit more effort but gives you full control over your system.
June 12, 2025
In today’s digital world, where every megabyte counts and stable connectivity is gold, a single internet channel is often just not enough. Maybe you have several external IP addresses gathering dust, or your hosting provider suddenly introduced those “unpleasant” traffic limits, threatening your budget and peace of mind. But don’t panic! PCC (Per Connection Classifier) on your MikroTik router running the updated RouterOS 7.x is your ticket to a world without limits. It allows you to optimize costs and bypass annoying restrictions.
