diff --git a/README.md b/README.md
index 2aab781..75ce5f3 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,7 @@ This is work in progress: please contribute by forking, editing and sending pull
 
 - [A Guide to Securing Red Hat Enterprise Linux 7](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html-single/security_guide/index)
 - [DISA STIGs RHEL](https://iase.disa.mil/stigs/os/unix-linux/Pages/red-hat.aspx)
+- [nixCraft - How to set up a firewall using FirewallD on RHEL 8](https://www.cyberciti.biz/faq/configure-set-up-a-firewall-using-firewalld-on-rhel-8/)
 
 ### SUSE