2025-09-17
Introduction
Imagine: ping works, DNS responds, ports are open, mtr shows no loss, but curl returns errors like connection reset by peer or SSL handshake failed. There’s clearly a problem, but standard tools are powerless.
At such moments, the only option is to look at the actual traffic — in other words, “listen to the wires.” This process is called packet sniffing or packet analysis. In this article, we’ll go through how to use three key tools: tcpdump, sngrep, and Wireshark.
2025-09-17
Routing tasks are solved with flying colors! Thank you
Reply: Thanks for the feedback!
Glad to help!
2025-09-12
Thank you very much for such prompt, high-quality work! We have experience in the IT field, but you managed to surprise us!
Answer: Thank you for the feedback!
Glad to help!
2025-09-11
Everything is great, thank you
Answer: Thank you for the feedback!
Glad to help!
2025-09-11
Competent specialist, everything was done promptly, I’ll get in touch again!
Answer: Thank you for the feedback!
Glad to help!
2025-09-09
Want to set up your own fully private video conferencing server?
Jitsi Meet is a great choice, and installing it with Docker is the fastest and most reliable way. This article provides a step-by-step guide to get your server up and running in just a few minutes.
Step 1: Preparation
Before installing, make sure you have:
- A Linux server (e.g., Ubuntu).
- A domain name pointing to your server’s IP (e.g.,
meet.your-domain.com). - Installed Docker and Docker Compose.
👉 If Docker isn’t installed yet — use the instructions from the previous article.
2025-09-09
Quickly helped set up the server, I recommend!
Reply: Thanks for the feedback!
Glad to help!
2025-09-08
Hello! If you’re even a little interested in the web, you’ve probably heard of curl.
It’s a powerful and versatile command-line tool for interacting with web servers. It is used to send and receive data over various protocols: HTTP, FTP, SFTP, as well as mail protocols.
This guide is your first step. We’ll focus on the basics to help you understand how curl works and how to use it for everyday tasks.
2025-09-07
Introduction
We are used to using convenient services like Google Meet or Zoom. But what if you are a doctor, mentor, or consultant for whom privacy and full control over client data are crucial?
Let’s compare two popular tools: Jitsi Meet and Google Meet, and figure out which one is better suited for professional work.
What is Jitsi Meet?
Jitsi Meet is not just a video conferencing service but a full-fledged platform with open-source code. It can be used via the public server (meet.jit.si) or deployed on your own server for complete control.
2025-09-05
Introduction
Logrotate is a powerful tool for log management in Linux, but its interaction with Docker has its own specifics.
This guide explains how to properly use logrotate with Docker containers and when it’s better to rely on Docker’s built-in log management tools.
Docker Containers and Logs
Docker collects logs from the standard output streams (stdout and stderr) of containers and, by default, stores them as JSON files:
/var/lib/docker/containers/\<container\_id>/\<container\_id>-json.log
If a container generates a lot of logs, these files can take up gigabytes and quickly consume all available disk space.
