There’s a handy way to knock all distributed SMTP AUTH attacks on the head by switching off the advertising of SMTP AUTH to all but specified IP addresses and IP address ranges. It works perfectly. For details on how to achieve this on a WHM/cPanel server, see here: http://sysadmintips.in/advanced/csf/exim Great! However there’s a problem. Many many people like to use … Read More
CloudFlare & WHM/cPanel Apache Server Firewall Conflict
CloudFlare adds another level of security and resilience in front of our dedicated server. It’s an excellent idea and for basic use, it’s completely free. Fab. However, there’s a problem. Because all server traffic which is routed via CloudFlare effectively comes from CloudFlare, and because it’s imperative CloudFlare’s IP address ranges are never blocked (because one bad apple would spoil … Read More