diff --git a/pkg/apis/configuration/validation/globalconfiguration.go b/pkg/apis/configuration/validation/globalconfiguration.go
index 689fa625ef..6b3c24b46f 100644
--- a/pkg/apis/configuration/validation/globalconfiguration.go
+++ b/pkg/apis/configuration/validation/globalconfiguration.go
@@ -105,11 +105,18 @@ func (gcv *GlobalConfigurationValidator) checkIPPortProtocolConflicts(combinatio
 	}
 
 	existingProtocol, exists := combinations[ip][listener.Port]
-	if exists {
-		if existingProtocol == listener.Protocol {
-			return field.Duplicate(fieldPath, fmt.Sprintf("Listener %s: Duplicated port/protocol combination %d/%s", listener.Name, listener.Port, listener.Protocol))
-		} else if listener.Protocol == "HTTP" || existingProtocol == "HTTP" {
-			return field.Invalid(fieldPath.Child("port"), listener.Port, fmt.Sprintf("Listener %s: Port %d is used with a different protocol (current: %s, new: %s)", listener.Name, listener.Port, existingProtocol, listener.Protocol))
+	if !exists {
+		return nil
+	}
+
+	switch listener.Protocol {
+	case "HTTP", "TCP":
+		if existingProtocol == "HTTP" || existingProtocol == "TCP" {
+			return field.Invalid(fieldPath.Child("protocol"), listener.Protocol, fmt.Sprintf("Listener %s: Duplicated ip:port protocol combination %d/%s", listener.Name, listener.Port, listener.Protocol))
+		}
+	case "UDP":
+		if existingProtocol == "UDP" {
+			return field.Invalid(fieldPath.Child("protocol"), listener.Protocol, fmt.Sprintf("Listener %s: Duplicated ip:port protocol combination %d/%s", listener.Name, listener.Port, listener.Protocol))
 		}
 	}
 
diff --git a/pkg/apis/configuration/validation/globalconfiguration_test.go b/pkg/apis/configuration/validation/globalconfiguration_test.go
index 709967db71..ceff693a86 100644
--- a/pkg/apis/configuration/validation/globalconfiguration_test.go
+++ b/pkg/apis/configuration/validation/globalconfiguration_test.go
@@ -234,6 +234,20 @@ func TestValidateListeners_PassesOnValidIPListeners(t *testing.T) {
 				{Name: "listener-2", IPv6IP: "2001:0db8:85a3:0000:0000:8a2e:0370:7334", Port: 8080, Protocol: "HTTP"},
 			},
 		},
+		{
+			name: "UDP and HTTP Listeners with Same Port",
+			listeners: []conf_v1.Listener{
+				{Name: "listener-1", IPv4: "127.0.0.1", Port: 8080, Protocol: "UDP"},
+				{Name: "listener-2", IPv4: "127.0.0.1", Port: 8080, Protocol: "HTTP"},
+			},
+		},
+		{
+			name: "UDP and TCP Listeners with Same Port",
+			listeners: []conf_v1.Listener{
+				{Name: "listener-1", IPv4: "127.0.0.1", Port: 8080, Protocol: "UDP"},
+				{Name: "listener-2", IPv4: "127.0.0.1", Port: 8080, Protocol: "TCP"},
+			},
+		},
 	}
 
 	gcv := createGlobalConfigurationValidator()