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Questions tagged [flooding]

Flooding is a type of Denial of Service(DoS) network attack, which consists of the generation of numerous TCP requests intended to overwhelm a web server and result in slowdown or downtime.

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rails - Choosing captcha plugin

There are a lot of captchas plugins in Rails and also many types of solutions for preventing spamming and flooding. So it isn't only Rails question. Let's see what types of plugins do we have: 1. Classic image captcha (zendesk's Captcha,…
sunki
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PHP: Anti-Flood/Spam system

I'm actually working on a PHP project that will feature a user system (Login,Register,Send lost password to email,..) and I think that this may be very vulnerable to Brute-Force attacks and/or Spam (Send a password to someone's email like 1000…
lamas
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How to avoid flooding in my very simple web application and make it scalable?

I'm trying to develop a very simple Java web application using JSP and Servlets. 1) There is a textbox and a submit button on the page, 2) The user enters his name, say John, to the textbox and clicks the button, 3) The string is forwarded to my…
Murat Derya Özen
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PHP, .htaccess, DDoS & speedy request protection

I have a question, i built this little script to check if a certain ip is flooding my website. When it does, i deny the ip in the .htaccess file. My question is, can somebody tell me if this script is completely useless or worth trying... The script…
3eighty
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How to prevent server flooding in a Django web application?

I am developing a Python-Django web app. It lets people visiting my site to embed an already created poll widget to their sites. The problem is when a visitor embeds a poll in a site that has much traffic - so that many people vote on the poll at…
forbdn
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Flood filling C++

I have a problem with implementation of flood filling. The task is to ask user to click on the white part of the image (indicating seed point), he want to fill with black. The operation should be done on the binary images. I'm using CImg library. I…
sashafierce
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Gunicorn webserver measures to mitigate layer 7 HTTP GET floods (web app is a Django forum)

A Django-based web forum I maintain is seeing application level DDOS attacks daily. Essentially, it's an HTTP GET flood hitting the home page, causing the server to execute a large number of internal requests and load various files to create the…
Hassan Baig
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Flooding WebSocket

Am new to websocket and i implemented websocket on web application which the server-side is written in java and client-side is javascript. Server send notifications to client via websocket. I wonder what would happened if client won't be fast enough…
bojek
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How to block TCP and UDP packets (flood attack)

I have a program that tells you if your computer is online or not. The way I do it is with the help of a Server that basically sends UDP packets to clients. Clients then respond back letting the server know that they are online. If a client does not…
Tono Nam
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How do deal with bots using the in-site search and overflowing the SQL with too many requests?

What is the best practise to not annoy users with flood limits, but yet block off bots doing automated searches? What is going on: I am been more aware of odd search behaviour and I finally had the time, to catch who it is. It is 157.55.39.* also…
Kalle H. Väravas
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golang: strategies to prevent connection reset by peer errors

The program is spawning many goroutines (getStock) simultaneously which, I believe, is resulting in the remote server immediately dropping the connection. I am not trying to create a DOS, but I still want to aggressively get data without getting…
AG1
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what does "possible SYN flooding on port 8009. Sending cookies" mean in /var/log/messages?

I have a web application setup apache+mod_jk+tomcat(connector for mod_jk on 8009 port). Recently my app started to hang few times a day and in /var/logs/messages there are entries like "possible SYN flooding on port 8009. Sending cookies" with 30-60…
taras
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Server access.log is flooded by requests with referrer m.facebook

When analyzing my nginx access.log on my linux server i found, that there are tons of requests made by mobile devices with referrer m.facebook.com.. But there are not that many visitors on my site (according to google analytics).. Does anyone know…
Martin Bauer
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Statistical Attack on website

Backdrop (a bit of a read) We created a shortened url redirector (using asp.net Url Routing with a catch-all for 404 to do routing) in which bar codes are scanned from devices and then redirected to a destination site from mobile devices. We log all…
Dave
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How can I limit the number of times an element is clicked within a minute?

I am making a PM system, and I am currently adding the message starring system (so the user can star messages). The problem is that if the user keeps starring and unstarring a message very fast (clicking it over and over again) it will mess up the…
Nathan
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