Stresser.st is a free, easy-to-use IP stresser that doesn't require an account. Stress test your firewall in a matter of seconds.

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Top Stressers Should our power not be enough for your connection I recommend the following paid stressers

Stresser URL Description
Stresser AI 🔥 https://stresse.ru Best layer 4 attacks on the market, advanced method customizations.
Nightmare Stresser https://nightmarestresser.net Strong Layer 4 attacks, API, 24/7 support
darkvr.io https://darkvr.io Layer 4&7 bypass methods, All Plans have: 86400 Seconds & API Access
Tresser.io https://tresser.io Tresser.io one of the best IP Stresser we provide the best layer4 and layer7, Try now our free stresser!
Quez Stresser https://quezstresser.ru Free L4 stresser (1Gbit/s UDP)

What is a Stresser, Booter?
IP stressers, booters, and DDoSers are tools that transmit a big amount of data to a target IP address in order to overload the IP and cause a denial of service attack.
A denial of service attack occurs when an IP address can no longer process genuine requests and, as a result, goes offline.
An IP stresser is a great tool to see how much bandwidth your IP can tolerate before releasing your website or server for commercial use.
If your connection can handle an IP stresser, it's likely it can handle multiple concurrent connections and is ready to be unleashed into the wild.

Types of DDoS attacks

Amplification (DrDoS) - This attack technique uses public servers to reflect and amplify data by sending a small trigger query and spoofing the source IP as the victim, resulting in a much larger response directed at the victim. Amplification attacks are typically 1-10Gbps, but they have been recorded at over 1Tbps if executed correctly. NTP, DNS, Memcached, and SNMP are examples of vulnerable DrDos protocols.

SYN Attack - SYN Attacks (TCP protocol) take use of the target's CPU, RAM, and other resources, forcing the server to respond with continual SYN+ACK answers as the target tries to finish a false handshake. SYN attacks use small packets with high PPS (packets per second) instead of large packets. To prevent such attacks, SYN Cookies are often used.

UDP Attack - UDP Attacks send random junk data to random ports, causing ICMP port unavailable replies if the ports are not in use by the system.

Browser Emulation - Browser emulation attacks use public libraries to interpret javascript, web services like cloudflare and other protections rely on javascript challenges to authenticate clients, this type of attack bypasses all javascript protections, and sometimes even solves captchas. Once the cookie is stored it can be used with regular GET/POST attacks without browser emulation.

How to Stress test my IP?

Easy, no login/account is necessary; simply input your IPv4 address, your port (53 works nicely, but any port between 0-65535), the length of time you want the stress test to run, and then complete the captcha. Your IP will instantly receive data from our stress testing servers, since we are a free service the flood is relatively small and may not always result in a DDoS attack, but it will provide enough information to assist you design your firewall more successfully in the event of a similar, much larger attack in the future. If our free service isn't powerful enough for you, I recommend using a premium IP stresser listed on our website.


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Terms of Service
By visiting our website, you agree not to use this tool to stress test any IP addresses that you do not control or own. This tool is only to be used for dianogstic purposes (load balancing, firewall, resource consumption tests). Any use of this tool for illicit purposes is strictly prohibited. We reserve the right, with or without notice, to amend our terms of service at any moment.

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