How to block Brute Force Attacks?

Chris Worner

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I am getting more Brute Force Attacks on my server. Which tools can help me to block them?
 

castordor

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There is options for that in CSF firewall configurations if you use it.
 

Chris Worner

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Chris Worner
Where to find this option?
Can you show me a screenshot?
 

castordor

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castordor
What panel are you using? cPanel and Directadmin both have a plugin which you can install for CSF firewall. After installing the plugin, you can go to configuration options link.
 

mobin

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What kind of brute-force attack you mean...is it against services like SSH, FTP, etc or against web apps like Wordpress, Joomla, etc ?
 

Chris Worner

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Chris Worner
I received reports like this

Brute-Force Attack detected in service log from IP(s) 195.231.3.188

In the details

A brute force attack has been detected in one of your service logs.

IP 195.231.3.188 has 123 failed login attempts: dovecot1=123
 

UWH-David

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There are many things to consider depending on the type of attack. Is it a network layer attack, application layer, etc. If it is against a WordPress install, for example, you can defend against this top-down. Placing the website behind Cloudflare can provide some protection. Setting up your firewall to detect brute force attacks against ModSecurity rules or flooding against a port, and finally, there are plugins available for scripts like WordPress such as WordFence which provide an additional layer of brute force defense.
 

Akshay_M

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I am getting more Brute Force Attacks on my server. Which tools can help me to block them?
Use 128-bit or higer encryption. Use a good encryption method. Good way of communication of keys. Have a limit of how many times a person can try a password. Use 2 way or higher encryption method. Something you have, something you know, someone you are. You can use these three as a password as there are the basics.
 

Require

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As I am fairly new to the IT world I don't know much but I am learning a lot from this forum one thing I learn't in school is have have a good password one upper case lower case with a mixer of and letters & symbols like @[email protected] and numbers just to make it more secured.
 

Adam Stokes

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Here are few small tips you can implement for Brute force attacks
  • Protect yourself with very long passwords and complex characters
  • Consider the multi factor authentication for users
  • You can also implement some of the hardware-based security protocols.
  • Remote extra sensitive data from the network and isolate it
 
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