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Posted by Jamison on 23 08 2016.

One of the most on-going problems for many system administrators is the potential for brute-force attacks. Up till now, firewall developers and engineers design their modern products with the deterring of these in mind.

When it comes to cPanel users, the types of brute attacks they should be concerned with include cPHulk, LFD, and BFD.

What a Brute Force Attack Is All About

It pays to know what a brute force attack is before you start shopping around for a firewall designed to safeguard your assets against it.

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When a hacker is trying to brute-force your server, they are attempting to steal login credentials – both usernames and passwords. Sometimes, they steal this in pre-compiled lists, while in other times, they generate this on the go. Once they have these pieces of information, they will try to use them to launch attacks on your server. In many cases, they automate these attacks. The ultimate goal of these attackers is to find a set of login credentials that will allow them successful entry into your server.

Strong Password: First Line of Defense

As with any other online account, your first line of protection is a powerful password. You should also change it as regularly as you can, so as to lower your chances of dealing with unauthorized access.

However, with the kind of technology brute-force attackers make use of today, having just a strong password that you regularly change will not give you the best solution.

Why Passwords are Not the Single Solution

You still need a strong password for safety and security reasons. However, relying on this alone will not get you the strongest protection.

First, is because there are still so many end users who have not yet completely grasped the concept of creating a secure password, a safe storage, and a proper rotation. Believe it or not, they still use passwords such as p@$$w0rds.

Brute-force attacks consume a lot of resources from servers, leading to their exhaustion, server problems, service downtimes, and ultimately, a toll on your bottom line.

To strengthen your network and website security, you need to install the correct protective software. Aside from firewalls, malware protection, and anti-virus programs, you also have to use those specifically designed to safeguard you and your assets from brute-force attacks. cPHulk, LFD, BFD, are the main solutions many experts consider as an effective means for mitigation.

The Bottom Line

All three types of brute-force attack protections help you effective mitigate the astounding negatively effects of brute-force attacks. Whether these attacks are directed towards your servers, your files, or your applications, always keep in mind that large-scale attacks typically involve the unauthorized access of dozens, if not hundreds of various IP addresses.

With this being pointed out, make sure you take this into consideration when making a selection from all your options when it comes to these brute-force attack protections. cPHulk is effective for small-scale attacks, while both LFD and BFD are better and more effective for mitigating the bigger attacks.

Overview

This article will cover the use of cPHulk. cPhulk is software designed to protect your server from brute force login attempts. It does this through blacklisting IP addresses that have too many failed login attempts within a short period.

ATTENTION: When enabling cPHulk it is critical that you whitelist your own IP address so that you do not block yourself from your server. If you believe you have been blocked from your server please refer to the Whitelisting in cPanel section.

Note: If you need your IP address, it can be found at www.Bluehost.com/ip

Tasks Involved

Click on any of the tasks to jump to that point in the guide.

Enable cPhulk

To enable, cPHulk follow these steps.

1. Log in to WHM.
2. Click on Security Center.
3. Click on the cPHulk Brute Force Protection icon.
4. Click on Enable under cPHulk is Currently Disabled.

The status should say cPHulk is Currently Enabled.

Whitelisting Your IP Address

These steps will explain how to whitelist an IP address. Whitelisted IP addresses will never be blocked by cPHulk.

1. Click the White/Black list Management tab.
2. Enter your IP address in the White list (Trusted IP list) entry field.
3. Click Quick Add.

To modify multiple IPs at once, click Edit Whitelist

Whitelisting in cPanel

If you have been blocked from WHM or any other login on your server, you may still login to your Bluehost cPanel and whitelist your IP address.

Note: If you need your IP address, it can be found at www.Bluehost.com/ip

1. Login to your Bluehost cPanel
2. If you are not already on the hosting page, click the hosting link at the top.
3. Click the performance link underneath the hosting tab.
4. Click the system console link.
5. Login with root as your username and your root password.
   Note: If you aren't sure of the root password please see: Setting your Root password
   Note: When typing in the password, the console will not act as if anything is being entered. This is done purposefully for security. Type your password carefully and hit enter as normal.
6. Once you are logged into the console, run enter this command:
   /scripts/cphulkdwhitelist YOUR-IP
   Note: Please replace YOUR-IP with your actual IP address.
7. Next run this command:
   mysql cphulkd -e 'delete from brutes where ip='YOUR-IP'
   Note: Please replace YOUR-IP with your actual IP address.
8. Your IP address should now be whitelisted. Finally, enter this command to close the console. exit

Blacklisting IP Addresses

1. Click the White/Black list Management tab.
2. Enter the IP address into the Black list (Rejected IP list) entry field.
3. Click Quick Add.

To modify multiple IPs at once, click Edit Blacklist.

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