Questions tagged [rate-limiting]

In computer networks, rate limiting is used to control the rate of traffic sent or received on a network interface.

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Nginx rate limiting on unique IPs

we've been dealing with constant attacks on our authentication url, we're talking millions of requests per day, my guess is they are trying to brute force passwords. Whenever we would block the IP ...
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Is there is a way to limit access per hour per user in apache2?

When requesting, POST form with userID is already required, so if I can log the userID of the POST form, I think there would be a way to limit to n times(I think 3 time per hour is good for me) of ...
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1answer
35 views

Stop Ubiquiti ICMP restrictions (two concurrent pings at once from same host for traceroute)

How do I change the Ubiquiti Security Gateway's default icmp restrictions from inside the LAN? It seems that my Ubiquiti Security Gateway's default settings will drop icmp packets if I'm doing more ...
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23 views

Is it possible to tell nginx to delay a response from a reverse proxied server?

I have an application server sitting behind nginx, and in some cases (e.g. wrong password), I want to intentionally delay the response by 500ms or more. Implementing this delay in the application ...
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118 views

Can I use rate-limiting with HTTP basic authentication in Apache?

So I'm running a few popular web applications on my server. I want these to be reachable from any computer without creating too many vulnerabilities. I am using Apache 2.4.29 as my HTTP server. My ...
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What are sane values for Nginx Rate Limiting?

I'm trying to limit the number of concurrent connections to my site using Nginx limit_req. My goal is to defend the website against some users with a heavy hand on HTTRack, some aggressive bots and a ...
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1answer
47 views

Exchange (2016) many mailbox delegations and throttling policies

At a customers site with 20+ employees per team I get an outlook warning message roughly translated to "The amount of elements opened at once has been limited by the server administrator". ...
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1answer
148 views

How do I limit linux CPU and RAM usage per user

I would like to limit CPU and ram usage per user. So, let's say there is user john. He can run as many processes as he wants, but he also needs to have 2048 megabytes of ram and 2 CPU cores. I know ...
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Nginx responding with 429s but I don't have it configured in my config

I'm hosting a rails app on AWS elastic beanstalk and am noticing my nginx server returning 429s in the nginx log. The problem is, I'm not seeing where the limit_req is being defined so I'm struggling ...
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66 views

Value for haproxy.router.openshift.io/rate-limit-connections.rate-http annotation

What should be the value for haproxy.router.openshift.io/rate-limit-connections.rate-http annotation in an Openshift Route? Ref: https://docs.openshift.com/container-platform/4.3/networking/routes/...
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31 views

HAProxy ratelimit with delay

Is there a way to set a limit per minute (e.g. 150 r/m) and not just have a maximum threshold of connection after which connections are blocked? I've investigated a bit and I can't find anything. I've ...
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1answer
144 views

Exclude location from NGINX rate limiting

I have both limit_req_zone and limit_req defined in the http block of nginx so it will apply to all server and location blocks. Is there a way to exclude a certain location or server block from that ...
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33 views

HAPROXY sc_get_gpc0 acl not working for extended block period

I have been struggling to get this rate-limiting configuration to work on HAProxy. As seen below I am attempting to use "sc2_get_gpc0" to get a second value stored in the hour_hold stick ...
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1answer
83 views

Linux HTB: More than 70% of ceil rate is never achieved

Background:- I have an arm based system, which has HTB setup on the eth and wlan interface. Here is the HTB configuration:- tc class add dev eth1 parent 1:1 classid 1:1 htb rate 1Gbit ceil 1Gbit ...
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Postfix limit connections

I have a question about Postfix. Last night someone tried to access my Postfix server, he/she connected like ~30 times to it. Is there any way to limit simultaneous connections? Here is a part of the ...

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