Fix FirewallD in CentOS 7

by Danila Vershinin, November 17, 2019

Here’s how to fix the FirewallD startup problem in CentOS 7. A permanent fix, not a half solution!


NGINX honeypot – the easiest and fastest way to block bots!

by Danila Vershinin, April 6, 2019

Increase your NGINX server security using NGINX honeypot approach. Quick and reliable way to reduce load from bots.


CentOS 7, 8: ban bad IPs and networks with FirewallD

by Danila Vershinin, April 7, 2018

Now this is how you ban the bad guys from your server with the convenient Firewalld drop zone.


FirewallD FTP rule: allow access to FTP service in CentOS 7

by Danila Vershinin, October 8, 2014

Sometimes you have to use tricks to accomplish a task. Even a trivial task might require special workarounds. Let’s enable access to FTP service on a CentOS 7 which comes with FirewallD as default firewall component in operating system. You might be fine without the workaround, but if you have an issue – you will have to use it.