Installing and Uninstalling CSF in Linux.
Software Firewall is a piece of software that is installed on your computer in order to protect it from unauthorized access.
CSF - Config Server Security & Firewall. It is an open source firewall for server.
Log into your server as root user and do the following steps to install.
-> rm -fv csf.tgz
To remove csf tar file if you have downloaded any old csf installation file in the current directory.
->pwd
pwd is used to check your present working directory
-> wget http://www.configserver.com/free/csf.tgz
wget command is used to download the latest csf installtion file from the given website link.
-> tar -xzf csf.tgz
tar command is used to extract the downloaded csf tar file.
->cd csf
cd command is used to change from your current working directory. The above command will get you inside the extracted csf folder.
-> sh install.sh
sh command is used to run your shell script file. The above command will run install.sh script file. It will install the csf.
-> perl /usr/local/csf/bin/csftest.pl
perl command is used to run the perl scripts. The above command used to test whether the required iptables firewall modules has been installed correctly.
->sh /usr/local/csf/bin/remove_apf_bfd.sh
we can have only one iptable firewall in our server. The above script will remove apf and bfd iptables firewall modules from our server.
-> csf -e
(or)
->csf --enable
After we installed the CSF, we have to enable it. use anyone of the above commands to enable the csf.
-> vim /etc/csf/csf.conf
First time the csf will start only in TESTING mode. Open the csf configuration file and change the TESTING variable value from 1 to 0.
->csf -x
(or)
->csf --disable
use anyone of the above commands to disable csf
Uninstalling csf:
There is an uninstall script available to uninstall the CSF very easy and simple.
->cd /etc/csf
change your working directory where uninstallation script is available.
->sh uninstall.sh
The above script will uninstall CSF completelly from your system.
