firewall – Blog

How to install CSF firewall on CentOS cPanel server

January 21, 2016 at 2:38 pm (last edited September 21, 2019 at 8:07 pm)

Download and install using:

wget https://download.configserver.com/csf.tgz
tar xfz csf.tgz
cd csf
sh install.sh

Update the following file with a trusted IP addresses

/etc/csf/csf.allow

Go ahead and disable testing mode

sed -i -e 's/TESTING = "1"/TESTING = "0"/g' /etc/csf/csf.conf

Once done, restart your firewall

csf -r

To add your IP address to a permanent allow list use:

csf -a 11.22.33.44

To block an IP address:

csf -d 11.22.33.44

Use following to see the lfd logs

tail -f /var/log/lfd.log

… Read the rest

IpTables

361 admin

December 11, 2012 at 7:17 am (last edited April 27, 2013 at 12:58 pm)

Iptables is default linux firewall used to set up, maintain, and inspect the tables of IPv4 packet filter rules in the Linux kernel. Several different tables may be defined. Each table contains a number of built-in chains and may also contain user-defined chains.… Read the rest

How to install csf in Ubuntu or Linux server

161 admin

September 9, 2012 at 11:08 am (last edited September 23, 2019 at 5:35 am)

CSF is a firewall that can be installed on linux based severs to enhance the security. It can be installed even on a server based on cPanel. It can be configured to find out hacking attempts through ssh etc. Can be used for ip whitelisting and blacklisting.… Read the rest