MIG servers

  When your Linux server load suddenly spikes, guessing the cause is not an option. Your websites slow down, APIs time out, and even your SSH connection might begin to lag. In these critical moments, you need to know immediately whether you are dealing with a legitimate traffic surge, a misbehaving internal application, or a Distributed Denial-of-Service (DDoS) attack. This tutorial provides a hands-on, step-by-step guide to diagnosing malicious traffic using standard Linux command-line utilities. 1. Monitor Network Interface Traffic (Volumetric Attacks) The most common form of a DDoS attack is a volumetric flood. Before digging into your web server logs, you should check the raw traffic hitting your network interfaces. Monitor Real-Time Bandwidth with iftop   Run the following command: sudo iftop -n (Note: The -n flag prevents DNS resolution, which is crucial during an attack because DNS lookups will severely slow down the tool) Check Packets Per Second (PPS) with sar  ...

A dedicated server can have a powerful CPU, plenty of RAM, and a high-speed network port, yet a DDoS attack can still make the hosted services slow or entirely unreachable. The reason is simple: depending on the attack type and mitigation architecture, malicious traffic can overwhelm network capacity, connection-handling resources, or application resources before legitimate traffic can be processed normally. When discussing DDoS attacks on dedicated servers, the impact can occur at the network, connection, or application level rather than being limited to hardware exhaustion. The resulting traffic flood can contribute to bandwidth saturation, increased network latency, packet loss, resource exhaustion, and reduced service availability. In this guide, we will explore what happens at both the network and server levels during an attack, and explain why appropriate upstream protection can help maintain application availability. What Is a DDoS Attack? A DDoS (Distributed Denial-of-Service) ...