diff --git a/src/rhcsa.md b/src/rhcsa.md
index 3c72446..4e003dd 100644
--- a/src/rhcsa.md
+++ b/src/rhcsa.md
@@ -745,16 +745,28 @@ sudo dnf repolist # List all repositories
 ### firewall-cmd
 > Note: firewall-cmd is used to manage the firewall rules.
 ```bash
+### displaying the firewall zones
 sudo firewall-cmd --get-active-zones # Display the active zones
 sudo firewall-cmd --get-default-zone # Display the default zone
 sudo firewall-cmd --get-zones # Display the zones
 
+### setting the default zone
+sudo firewall-cmd --set-default-zone=public # Set the default zone to public
+
+### displaying the rules in the firewall
 sudo firewall-cmd --list-all # Display all the rules in the firewall
 
+### adding rules to the firewall
 sudo firewall-cmd --zone=public --add-service=http --permanent # Add the http service to the public zone
 sudo firewall-cmd --zone=public --add-port=80/tcp --permanent # Add the port 80/tcp to the public zone
 sudo firewall-cmd --zone=public --add-protocol=tcp --permanent # Add the tcp protocol to the public zone
 
+### removing rules from the firewall
+sudo firewall-cmd --zone=public --remove-service=http --permanent # Remove the http service from the public zone
+sudo firewall-cmd --zone=public --remove-port=80/tcp --permanent # Remove the port 80/tcp from the public zone
+sudo firewall-cmd --zone=public --remove-protocol=tcp --permanent # Remove the tcp protocol from the public zone
+
+### reloading the firewall
 sudo firewall-cmd --reload # Reload the firewall
 ```