diff --git a/active/software_firewalld/firewalld.md b/active/software_firewalld/firewalld.md
index 2a10c06..e608ecb 100644
--- a/active/software_firewalld/firewalld.md
+++ b/active/software_firewalld/firewalld.md
@@ -15,6 +15,9 @@ firewall-cmd --set-default-zone=drop
 # Set zone for a specific subnet
 firewall-cmd --permanent --zone=drop --add-source=10.244.0.0/16
 
+# Set zone for specific interface
+firewall-cmd --zone=drop --change-interface=
+
 # Get info about service
 firewall-cmd --info-service=samba