How to install CSF Firewall on your Server.
Installation
Installation is quite straightforward:
wget http://www.configserver.com/free/csf.tgz
tar -xzf csf.tgz
cd csf
sh install.sh
Next, test whether you have the required iptables modules:
Don’t worry if you cannot run all the features, so long as the script doesn’t report any FATAL errors
You should not run any other iptables firewall configuration script. For example, if you previously used APF+BFD you can remove the combination (which you will need to do if you have them installed otherwise they will conflict horribly):
That’s it. You can then configure csf and lfd by edit the files directly in /etc/csf/*, or on cPanel servers use the WHM UI
csf installation for cPanel is preconfigured to work on a cPanel server with all the standard cPanel ports open.
csf installation for DirectAdmin is preconfigured to work on a DirectAdmin server with all the standard DirectAdmin ports open.
csf auto-configures your SSH port on installation where it’s running on a non-standard port.
csf auto-whitelists your connected IP address where possible on installation.
You should ensure that kernel logging daemon (klogd) is enabled. Typically, VPS servers have this disabled and you should check /etc/init.d/syslog and make sure that any klogd lines are not commented out. If you change the file, remember to restart syslog.
Download the firewall script from : http://www.configserver.com/
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