How to Secure VPS Access with CSF Firewall

firewall-csf
firewall-csf

The best way to make the VPS server more secure is to create additional settings on the server side. A VPS server running on a Linux operating system will be faster and more challenging to break into with the correct settings.

One way to secure VPS access is to use Config Server Security Firewall or CSF. CSF is one of the methods that can be used to secure a VPS server running on a Linux operating system.

Due to the importance of server security, this article discusses how to secure VPS access with the CSF firewall.

How to install CSF on a CentOS 7 server

CSF is beneficial for detecting indications of threats connecting to the VPS server service. For example, panel login, IMAP/POP3 login, FTP, SSH server, etc.

Here is how to install CSF on a CentOS7 server:

Connection via SSH Server VPS
The first step is to connect to your SSH server.

Prerequisite installation
Before installing CSF, it is necessary to establish the prerequisites. Please write the following command:

yum install wget vim perl-libwww-perl.noarch perl-Time-HiRes

Install CSF
After installing the prerequisites, the next step is to install CSF or Config Security Firewall.

The first step is to enter the cd /home command in the Terminal to download the CSF file.

Download CSF
Then you have to download the CSF file. Please write the command as follows:

wget https://download.configserver.com/csf.tgz

Extract the csf.tr.gz file
The next step is to extract the CSF file. To extract it, enter the following command:

tar -xvzf csf.tgz

Install CSF
After downloading and extracting the CSF file, the next step is to install CSF. You can do this by entering the command:

cd csf

sh install.sh

Checking whether the CSF configuration is running or not
To check if the CSF configuration works correctly, write the command:

perl /usr/local/csf/bin/csftest.pl

Turn off test mode
If the test results are satisfactory, you can disable it. Do this by entering the command:

vi /etc/csf/csf.conf

Then change the TESTING section to TESTING=”0″.

The CentOS server has its firewall, so it must be disabled first. Do this by typing the following command:

systemctl stop firewalld

systemctl disable firewalld

After installing CSF, the next step is to enable CSF and LFD. Do this by entering the following command:

systemctl start csf
systemctl start lfd
systemctl enable csf
systemctl enable lfd

The VPS offers more security to its users. Despite this, you should always ensure more excellent protection for your VPS hosting. One of them is to secure access to the VPS using the CSF firewall.

So you need to know how to secure VPS access using a CSF firewall.

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