diff --git a/internal/firewalls/ddos_protection.go b/internal/firewalls/ddos_protection.go
index 8486fd9..6294423 100644
--- a/internal/firewalls/ddos_protection.go
+++ b/internal/firewalls/ddos_protection.go
@@ -33,7 +33,7 @@ func init() {
 
 		nodeConfig, _ := nodeconfigs.SharedNodeConfig()
 		if nodeConfig != nil {
-			err := SharedDDoSProtectionManager.Apply(nodeConfig.DDOSProtection)
+			err := SharedDDoSProtectionManager.Apply(nodeConfig.DDoSProtection)
 			if err != nil {
 				remotelogs.Error("FIREWALL", "apply DDoS protection failed: "+err.Error())
 			}
@@ -43,7 +43,7 @@ func init() {
 	events.On(events.EventNFTablesReady, func() {
 		nodeConfig, _ := nodeconfigs.SharedNodeConfig()
 		if nodeConfig != nil {
-			err := SharedDDoSProtectionManager.Apply(nodeConfig.DDOSProtection)
+			err := SharedDDoSProtectionManager.Apply(nodeConfig.DDoSProtection)
 			if err != nil {
 				remotelogs.Error("FIREWALL", "apply DDoS protection failed: "+err.Error())
 			}
diff --git a/internal/nodes/api_stream.go b/internal/nodes/api_stream.go
index bee2b67..9fdf33a 100644
--- a/internal/nodes/api_stream.go
+++ b/internal/nodes/api_stream.go
@@ -406,7 +406,7 @@ func (this *APIStream) handleCheckLocalFirewall(message *pb.NodeStreamMessage) e
 			"version": version,
 		}
 
-		var protectionConfig = sharedNodeConfig.DDOSProtection
+		var protectionConfig = sharedNodeConfig.DDoSProtection
 		err = firewalls.SharedDDoSProtectionManager.Apply(protectionConfig)
 		if err != nil {
 			this.replyFail(message.RequestId, dataMessage.Name+"was installed, but apply DDoS protection config failed: "+err.Error())
diff --git a/internal/nodes/node.go b/internal/nodes/node.go
index de1fe89..9566ccf 100644
--- a/internal/nodes/node.go
+++ b/internal/nodes/node.go
@@ -386,7 +386,7 @@ func (this *Node) loop() error {
 			}
 			if len(resp.DdosProtectionJSON) == 0 {
 				if sharedNodeConfig != nil {
-					sharedNodeConfig.DDOSProtection = nil
+					sharedNodeConfig.DDoSProtection = nil
 				}
 			} else {
 				var ddosProtectionConfig = &ddosconfigs.ProtectionConfig{}
@@ -395,6 +395,10 @@ func (this *Node) loop() error {
 					return errors.New("decode DDoS protection config failed: " + err.Error())
 				}
 
+				if sharedNodeConfig != nil {
+					sharedNodeConfig.DDoSProtection = ddosProtectionConfig
+				}
+
 				err = firewalls.SharedDDoSProtectionManager.Apply(ddosProtectionConfig)
 				if err != nil {
 					// 不阻塞