csf vs apf firewall, which one is better?

I am using csf firewall for my vps and it works pretty good but I heard about apf firewall. Did you any guys here use both? which one is better and why?

If you're using cPanel, CSF will provide you with a graphical interface for WHM.
CSF is more intuitive and more actively developed and updated. My recommendation is CSF.

Stick with CSF as it has an interface to manage , easy to administrate and effective use with cpanel.

On linux servers, almost all firewall apps only provide an easier way to configure iptables rules.
So, just choose the easiest solution for you.

I would recommend CSF that is config server security.

Firewall is actually a system of security for the computers using the network connections either for the internet or for any other purpose. It prevents the unauthorized access from any sort of private computer to your own network.

Firewalls can be installed in the computer in both ways either as hardware or software or sometimes used as a combination. It is required for the prevention of the trespassing of ones private networking connected to the internet, especially involving the use of the intranet.

The working criteria of the firewall is such that every data transmission of the internet first passes through the firewall system and only those messages which pass a certain security criteria are allowed to get through; otherwise the other data is blocked, making it inaccessible for the unauthorized users.

The firewall involves several different techniques one of them is the Packet filter. This is a simple technique of security for the firewall system. It keeps a check on the packets which enter and leave your computer network and then verifies them according to rules previously defined by your network user so as to allow or reject their passage through the network. The packet filtering is transparent to the network users, but its configuration is difficult and requires professional help.

The other firewall techniques include the Application gateway, which is targeted to specific programs such as the FTP, followed by the Circuit-level gateway which is required for the TCP and the UDP connections. And lastly the Proxy servers, which is most commonly used these days for the internet security system.

Firewall is actually considered to be the primary and the first line of defense for the security reasons.

Firewall used to block the certain network traffic on your server due to set of rules which you have define. It works as barrier between the trusted and un-trusted network. It is the key component which secure our server from the attack.

Firewall management rules -

It consist of two policies as below -

1. Default Deny policy
2. Default allow policy

There are set of rules define which define which traffic to allow or which connection to allow on the server and which connection to refuse or block.

Once you define the rule then you will need to configure the firewall on the server.

Thanks for the helpful tutorial, @24x7serverman

APF is a tried and true long time stable firewall which we used in the early 2000s but CSF surpassed it in functionality with its better integration into hosting control panels 10 years ago.

I have been using APF/BFD for years but have recently made the transition to CSF/LFD, at least on cPanel boxes. CSF is great just for the Interface alone, since it allows clients to easily make changes to their allow/deny lists without touching SSH.

Definitely CSF.
Supports dyndns clients, and the LFD daemon can replace Fail2ban if you know regex

CSF installed with LFD via their WHM package, works brilliantly and gives a wonderful analysis of the entire servers security.
Easy to open and close TCP/UDP ports

CSF is a more recent development that is also somewhat more robust than APF. It allows for temporary IP blocking and is equipped with both SYN flood protection, which protects against SYN flood DDoS assaults, and LFD, which is a built-in module that deals with brute-force login protection.