diff --git a/libnymea-zigbee/zcl/security/zigbeeclusteriaszone.cpp b/libnymea-zigbee/zcl/security/zigbeeclusteriaszone.cpp
index 45c4789..d71f8b1 100644
--- a/libnymea-zigbee/zcl/security/zigbeeclusteriaszone.cpp
+++ b/libnymea-zigbee/zcl/security/zigbeeclusteriaszone.cpp
@@ -39,10 +39,36 @@ ZigbeeClusterIasZone::ZigbeeClusterIasZone(ZigbeeNetwork *network, ZigbeeNode *n
 
 }
 
+ZigbeeClusterIasZone::ZoneState ZigbeeClusterIasZone::zoneState() const
+{
+    return m_zoneState;
+}
+
+ZigbeeClusterIasZone::ZoneType ZigbeeClusterIasZone::zoneType() const
+{
+    return m_zoneType;
+}
+
+ZigbeeClusterIasZone::ZoneStatus ZigbeeClusterIasZone::zoneStatus() const
+{
+    return m_zoneStatus;
+}
+
 void ZigbeeClusterIasZone::setAttribute(const ZigbeeClusterAttribute &attribute)
 {
     qCDebug(dcZigbeeCluster()) << "Update attribute" << m_node << m_endpoint << this << static_cast<Attribute>(attribute.id()) << attribute.dataType();
     updateOrAddAttribute(attribute);
+
+    if (attribute.id() == AttributeZoneState) {
+        quint8 zoneStateInt = attribute.dataType().toUInt8();
+        m_zoneState = static_cast<ZoneState>(zoneStateInt);
+    } else if (attribute.id() == AttributeZoneType) {
+        quint16 zoneTypeInt = attribute.dataType().toUInt16();
+        m_zoneType = static_cast<ZoneType>(zoneTypeInt);
+    } else if (attribute.id() == AttributeZoneStatus) {
+        quint16 zoneStatusInt = attribute.dataType().toUInt16();
+        m_zoneStatus = ZoneStatus(zoneStatusInt);
+    }
 }
 
 void ZigbeeClusterIasZone::processDataIndication(ZigbeeClusterLibrary::Frame frame)
@@ -75,6 +101,16 @@ void ZigbeeClusterIasZone::processDataIndication(ZigbeeClusterLibrary::Frame fra
                 // Update the ZoneState attribute
                 setAttribute(ZigbeeClusterAttribute(AttributeZoneState, ZigbeeDataType(Zigbee::BitMap16, frame.payload.left(2))));
                 emit zoneStatusChanged(ZoneStatusFlags(zoneStatus), extendedStatus, zoneId, delay);
+
+                // Respond with default response if enabled
+                if (!frame.header.frameControl.disableDefaultResponse) {
+                    // Send the default response with success back to the cluster
+                    ZigbeeClusterReply *reply = sendDefaultResponse(frame.header.transactionSequenceNumber, command, ZigbeeClusterLibrary::StatusSuccess);
+                    connect(reply, &ZigbeeClusterReply::finished, this, [](){
+                        qCDebug(dcZigbeeCluster()) << "Default response sent successfully to the IAS zone status notification.";
+                    });
+                }
+
                 break;
             }
             case ServerCommandZoneEnrollRequest: {
@@ -87,8 +123,16 @@ void ZigbeeClusterIasZone::processDataIndication(ZigbeeClusterLibrary::Frame fra
                                            << zoneType << "Manufacturer code:" << ZigbeeUtils::convertUint16ToHexString(manufacturerCode);
                 // Update the ZoneState attribute
                 setAttribute(ZigbeeClusterAttribute(AttributeZoneType, ZigbeeDataType(Zigbee::Enum16, frame.payload.left(2))));
-
                 emit zoneEnrollRequest(zoneType, manufacturerCode);
+
+                // Respond with default response if enabled
+                if (!frame.header.frameControl.disableDefaultResponse) {
+                    // Send the default response with success back to the cluster
+                    ZigbeeClusterReply *reply = sendDefaultResponse(frame.header.transactionSequenceNumber, command, ZigbeeClusterLibrary::StatusSuccess);
+                    connect(reply, &ZigbeeClusterReply::finished, this, [](){
+                        qCDebug(dcZigbeeCluster()) << "Default response sent successfully to the IAS zone status notification.";
+                    });
+                }
                 break;
             }
             }
diff --git a/libnymea-zigbee/zcl/security/zigbeeclusteriaszone.h b/libnymea-zigbee/zcl/security/zigbeeclusteriaszone.h
index c43c717..2d0d554 100644
--- a/libnymea-zigbee/zcl/security/zigbeeclusteriaszone.h
+++ b/libnymea-zigbee/zcl/security/zigbeeclusteriaszone.h
@@ -123,9 +123,15 @@ public:
 
     explicit ZigbeeClusterIasZone(ZigbeeNetwork *network, ZigbeeNode *node, ZigbeeNodeEndpoint *endpoint, Direction direction, QObject *parent = nullptr);
 
-    // TODO: write server commands
+    ZoneState zoneState() const;
+    ZoneType zoneType() const;
+    ZoneStatus zoneStatus() const;
 
 private:
+    ZoneState m_zoneState = ZoneStateNotEnrolled;
+    ZoneType m_zoneType = ZoneTypeInvalidZone;
+    ZoneStatus m_zoneStatus;
+
     void setAttribute(const ZigbeeClusterAttribute &attribute) override;
 
 protected:
diff --git a/libnymea-zigbee/zcl/zigbeecluster.cpp b/libnymea-zigbee/zcl/zigbeecluster.cpp
index 8336c35..7b171ae 100644
--- a/libnymea-zigbee/zcl/zigbeecluster.cpp
+++ b/libnymea-zigbee/zcl/zigbeecluster.cpp
@@ -282,6 +282,52 @@ ZigbeeClusterReply *ZigbeeCluster::sendClusterServerResponse(quint8 command, qui
     return zclReply;
 }
 
+ZigbeeClusterReply *ZigbeeCluster::sendDefaultResponse(quint8 transactionSequenceNumber, quint8 command, quint8 status)
+{
+    ZigbeeNetworkRequest request = createGeneralRequest();
+
+    // Build ZCL frame control
+    ZigbeeClusterLibrary::FrameControl frameControl;
+    frameControl.frameType = ZigbeeClusterLibrary::FrameTypeClusterSpecific;
+    frameControl.manufacturerSpecific = false;
+    frameControl.direction = ZigbeeClusterLibrary::DirectionServerToClient;
+    frameControl.disableDefaultResponse = true;
+
+    // Build ZCL header
+    ZigbeeClusterLibrary::Header header;
+    header.frameControl = frameControl;
+    header.command = ZigbeeClusterLibrary::CommandDefaultResponse;
+    header.transactionSequenceNumber = transactionSequenceNumber;
+
+    QByteArray payload;
+    QDataStream stream(&payload, QIODevice::WriteOnly);
+    stream.setByteOrder(QDataStream::LittleEndian);
+    stream << command << status;
+
+    // Build ZCL frame
+    ZigbeeClusterLibrary::Frame frame;
+    frame.header = header;
+    frame.payload = payload;
+
+    request.setTxOptions(Zigbee::ZigbeeTxOptions(Zigbee::ZigbeeTxOptionAckTransmission));
+    request.setAsdu(ZigbeeClusterLibrary::buildFrame(frame));
+
+    ZigbeeClusterReply *zclReply = createClusterReply(request, frame);
+    qCDebug(dcZigbeeCluster()) << "Send default response" << "TSN:" << ZigbeeUtils::convertByteToHexString(transactionSequenceNumber) << ZigbeeUtils::convertByteArrayToHexString(payload);
+    ZigbeeNetworkReply *networkReply = m_network->sendRequest(request);
+    connect(networkReply, &ZigbeeNetworkReply::finished, this, [this, networkReply, zclReply](){
+        if (!verifyNetworkError(zclReply, networkReply)) {
+            finishZclReply(zclReply);
+            return;
+        }
+
+        // Note: since this is a response to a request, we don't expect any additional indications and the reply is finished
+        finishZclReply(zclReply);
+    });
+
+    return zclReply;
+}
+
 ZigbeeNetworkRequest ZigbeeCluster::createGeneralRequest()
 {
     // Build the request
diff --git a/libnymea-zigbee/zcl/zigbeecluster.h b/libnymea-zigbee/zcl/zigbeecluster.h
index 4c7e692..97e6d75 100644
--- a/libnymea-zigbee/zcl/zigbeecluster.h
+++ b/libnymea-zigbee/zcl/zigbeecluster.h
@@ -119,6 +119,7 @@ protected:
     ZigbeeClusterReply *executeClusterCommand(quint8 command, const QByteArray &payload = QByteArray());
 
     ZigbeeClusterReply *sendClusterServerResponse(quint8 command, quint8 transactionSequenceNumber, const QByteArray &payload = QByteArray());
+    ZigbeeClusterReply *sendDefaultResponse(quint8 transactionSequenceNumber, quint8 command, quint8 status);
 
     bool verifyNetworkError(ZigbeeClusterReply *zclReply, ZigbeeNetworkReply *networkReply);
     void finishZclReply(ZigbeeClusterReply *zclReply);