Category Archives: Security

How can I block IP ranges using CSF Firewall?

CSF Firewall is one of the most complete server security suites around. It can help you to harden the security of your cPanel server up to the max. CSF is an iptables based firewall, and as such, it allows the server administrator to block offending incoming connections. One of the advanced things it allows is the ability to block IP… Read more »

Hardening Linux Server TCP/IP Stack Against SYN Floods

Days ago we wrote a post called How can I Turn On TCP SYN Cookie Protection on Linux? and today we will be completing the SYN Flood solutions post series with an article focused on showing how to harden your server against SYN Flood attacks. What is a SYN Flood Attack? When an attacker tries to start a SYN Flood… Read more »

How to Block XML-RPC Attacks on CentOS & cPanel Servers

XML-RPC is a protocol that uses XML to encode the calls and HTTP as a transport layer for its communication. XML-RPC means literally: XML Remote Procedure Call. It’s widely used in web applications, specilly by CMS like WordPress. Today we will show you how to Block XML-RPC Attacks easily. WordPress uses this XML-RCP to extend its functionality and features, it was… Read more »

How can I Turn On TCP SYN Cookie Protection on Linux?

Are you under DOS attack on your cPanel or Linux server and you need to stop that syn flood to avoid downtime? Many VPS and Dedicated servers suffer syn flood atttacks on their systems, it’s something really normal on Linux servers. One type of attack is called SYN Attack. TCP Syn attacks are what it is called as DOS (aka… Read more »

How can I Enable AutoSSL on WHM/cPanel?

      No Comments on How can I Enable AutoSSL on WHM/cPanel?

On this post we will show you how to enable AutoSSL for cPanel users. AutoSSL is a revolutionary way to enable SSL support on cPanel servers. Let’s begin learning what is AutoSSL and then how you can configure autossl for your cPanel users. What is AutoSSL? Since cPanel version 58, the awesome development team at cPanel Inc built a really… Read more »

How to Find Spam Script Locations with Exim on cPanel

Spam is a very long problem for web hosting providers and end users. If you have your own vps or dedicated server box, specially with cPanel, you may be facing spam issues from inside your very own box. Bad guys get into your box, upload malware and start sending spam from your dedicated server, you get blacklisted and a big problem… Read more »

How to configure SFTP on cPanel

      No Comments on How to configure SFTP on cPanel

File Transfer Protocol (aka FTP), is one of the oldest and most common ways to upload and download files from an FTP server. cPanel by default includes FTP connections for all their accounts and customers. However, FTP is not secure at all as it sends all your user/password information un plain text. That’s why today we are going to show… Read more »