diff --git a/daemon/ui/notifications.go b/daemon/ui/notifications.go
index 4f0fb24a..e907d2cf 100644
--- a/daemon/ui/notifications.go
+++ b/daemon/ui/notifications.go
@@ -1,49 +1,146 @@
 package ui
 
 import (
+	"fmt"
 	"io"
 	"io/ioutil"
 	"strings"
 	"time"
 
+	"github.com/gustavo-iniguez-goya/opensnitch/daemon/core"
 	"github.com/gustavo-iniguez-goya/opensnitch/daemon/firewall"
 	"github.com/gustavo-iniguez-goya/opensnitch/daemon/log"
 	"github.com/gustavo-iniguez-goya/opensnitch/daemon/procmon"
+	"github.com/gustavo-iniguez-goya/opensnitch/daemon/rule"
 	"github.com/gustavo-iniguez-goya/opensnitch/daemon/ui/protocol"
 	"golang.org/x/net/context"
 )
 
-func (c *Client) getClientConfig() *protocol.ClientConfig {
-	raw, _ := ioutil.ReadFile(configFile)
-	nodeName, _ := ioutil.ReadFile("/proc/sys/kernel/hostname")
-	nodeVersion, _ := ioutil.ReadFile("/proc/sys/kernel/version")
-	var ts time.Time
-	return &protocol.ClientConfig{
-		Id:                uint64(ts.UnixNano()),
-		Name:              strings.Replace(string(nodeName), "\n", "", -1),
-		Version:           strings.Replace(string(nodeVersion), "\n", "", -1),
-		IsFirewallRunning: firewall.IsRunning(),
-		Config:            strings.Replace(string(raw), "\n", "", -1),
-		LogLevel:          uint32(log.MinLevel),
-		// TODO
-		Rules: nil,
+// NewReply constructs a new protocol notification reply
+func NewReply(rID uint64, replyCode protocol.NotificationReplyCode, data string) *protocol.NotificationReply {
+	return &protocol.NotificationReply{
+		Id:   rID,
+		Code: replyCode,
+		Data: data,
 	}
 }
 
-func (c *Client) handleNotification(notification *protocol.Notification) {
+func (c *Client) getClientConfig() *protocol.ClientConfig {
+	raw, _ := ioutil.ReadFile(configFile)
+	nodeName := core.GetHostname()
+	nodeVersion := core.GetKernelVersion()
+	var ts time.Time
+	rulesTotal := len(c.rules.GetAll())
+	ruleList := make([]*protocol.Rule, rulesTotal)
+	idx := 0
+	for _, r := range c.rules.GetAll() {
+		ruleList[idx] = r.Serialize()
+		idx++
+	}
+	return &protocol.ClientConfig{
+		Id:                uint64(ts.UnixNano()),
+		Name:              nodeName,
+		Version:           nodeVersion,
+		IsFirewallRunning: firewall.IsRunning(),
+		Config:            strings.Replace(string(raw), "\n", "", -1),
+		LogLevel:          uint32(log.MinLevel),
+		Rules:             ruleList,
+	}
+}
+
+func (c *Client) handleNotification(stream protocol.UI_NotificationsClient, notification *protocol.Notification) {
 	switch {
 	case notification.Type == protocol.Action_CHANGE_CONFIG:
 		log.Info("[notification] Reloading configuration")
 		// this save operation triggers a re-loadConfiguration()
-		c.saveConfiguration(notification.Data)
+		err := c.saveConfiguration(notification.Data)
+		if err != nil {
+			log.Warning("[notification] CHANGE_CONFIG not applied")
+		}
 		// XXX: can the Reload() happen before finishing loading conf?
 		procmon.Reload()
+		c.sendNotificationReply(stream, notification.Id, err)
+
 	case notification.Type == protocol.Action_LOAD_FIREWALL:
 		log.Info("[notification] starting firewall")
 		firewall.Init(nil)
+		c.sendNotificationReply(stream, notification.Id, nil)
+
 	case notification.Type == protocol.Action_UNLOAD_FIREWALL:
 		log.Info("[notification] stopping firewall")
 		firewall.Stop(nil)
+		c.sendNotificationReply(stream, notification.Id, nil)
+
+	// ENABLE_RULE just replaces the rule on disk
+	case notification.Type == protocol.Action_ENABLE_RULE:
+		var rErr error
+		for _, rul := range notification.Rules {
+			log.Info("[notification] enable rule: ", rul.Name)
+			// protocol.Rule(protobuf) != rule.Rule(json)
+			r := rule.Deserialize(rul)
+			r.Enabled = true
+			// save to disk only if the duration is rule.Always
+			if err := c.rules.Replace(r, r.Duration == rule.Always); err != nil {
+				rErr = err
+			}
+		}
+		c.sendNotificationReply(stream, notification.Id, rErr)
+
+	case notification.Type == protocol.Action_DISABLE_RULE:
+		var rErr error
+		for _, rul := range notification.Rules {
+			log.Info("[notification] disable: ", rul)
+			r := rule.Deserialize(rul)
+			r.Enabled = false
+			if err := c.rules.Replace(r, r.Duration == rule.Always); err != nil {
+				rErr = err
+			}
+		}
+		c.sendNotificationReply(stream, notification.Id, rErr)
+
+	case notification.Type == protocol.Action_DELETE_RULE:
+		var rErr error
+		for _, rul := range notification.Rules {
+			log.Info("[notification] delete rule: ", rul.Name, notification.Id)
+			r := rule.Deserialize(rul)
+			if r == nil {
+				rErr = fmt.Errorf("Invalid rule")
+				continue
+			}
+			if err := c.rules.Delete(r.Name); err != nil {
+				log.Error("deleting rule: ", err, r)
+				rErr = err
+			}
+		}
+		c.sendNotificationReply(stream, notification.Id, rErr)
+
+	// CHANGE_RULE can add() or replace) an existing rule.
+	case notification.Type == protocol.Action_CHANGE_RULE:
+		var rErr error
+		for _, rul := range notification.Rules {
+			r := rule.Deserialize(rul)
+			if r == nil {
+				rErr = fmt.Errorf("Invalid rule")
+				continue
+			}
+			log.Info("[notification] change rule: ", r, notification.Id)
+			if err := c.rules.Replace(r, r.Duration == rule.Always); err != nil {
+				log.Error("[notification] Error changing rule: ", err, r)
+				rErr = err
+			}
+		}
+		c.sendNotificationReply(stream, notification.Id, rErr)
+	}
+}
+
+func (c *Client) sendNotificationReply(stream protocol.UI_NotificationsClient, nID uint64, err error) {
+	reply := NewReply(nID, protocol.NotificationReplyCode_OK, "")
+	if err != nil {
+		reply.Code = protocol.NotificationReplyCode_ERROR
+		reply.Data = fmt.Sprint(err)
+	}
+	if err := stream.Send(reply); err != nil {
+		log.Error("Error replying to notification:", err, reply.Id)
 	}
 }
 
@@ -51,16 +148,33 @@ func (c *Client) handleNotification(notification *protocol.Notification) {
 // receiving notifications.
 // It firstly sends the daemon status and configuration.
 func (c *Client) Subscribe() {
-	log.Info("Subscribe")
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
+	if _, err := c.client.Subscribe(ctx, c.getClientConfig()); err != nil {
+		log.Error("Subscribing to GUI", err)
+		return
+	}
+	c.listenForNotifications()
+}
+
+// Notifications is the channel where the daemon receives messages from the server.
+// It consists of 2 grpc streams (send/receive) that are never closed,
+// this way we can share messages in realtime.
+// If the GUI is closed, we'll receive an error reading from the channel.
+func (c *Client) listenForNotifications() {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	// open the stream channel
+	streamReply := &protocol.NotificationReply{Id: 0, Code: protocol.NotificationReplyCode_OK}
 	notisStream, err := c.client.Notifications(ctx)
 	if err != nil {
 		log.Error("establishing notifications channel", err)
 		return
 	}
-	if err := notisStream.Send(c.getClientConfig()); err != nil {
+	// send the first notification
+	if err := notisStream.Send(streamReply); err != nil {
 		log.Error("sending notfication HELLO", err)
 		return
 	}
@@ -75,10 +189,7 @@ func (c *Client) Subscribe() {
 			log.Error("getting notifications: ", err, noti)
 			break
 		}
-		c.handleNotification(noti)
-		//if err := notisStream.Send(c.getNotificationConfig()); err != nil {
-		//	log.Error("Error Subscribe()2 sending initial packet")
-		//}
+		c.handleNotification(notisStream, noti)
 	}
 
 	notisStream.CloseSend()
diff --git a/daemon/ui/protocol/ui.pb.go b/daemon/ui/protocol/ui.pb.go
index 2573863d..d4fd4a40 100644
--- a/daemon/ui/protocol/ui.pb.go
+++ b/daemon/ui/protocol/ui.pb.go
@@ -33,8 +33,10 @@ const (
 	Action_CHANGE_CONFIG   Action = 3
 	Action_ENABLE_RULE     Action = 4
 	Action_DISABLE_RULE    Action = 5
-	Action_LOG_LEVEL       Action = 6
-	Action_STOP            Action = 7
+	Action_DELETE_RULE     Action = 6
+	Action_CHANGE_RULE     Action = 7
+	Action_LOG_LEVEL       Action = 8
+	Action_STOP            Action = 9
 )
 
 var Action_name = map[int32]string{
@@ -44,8 +46,10 @@ var Action_name = map[int32]string{
 	3: "CHANGE_CONFIG",
 	4: "ENABLE_RULE",
 	5: "DISABLE_RULE",
-	6: "LOG_LEVEL",
-	7: "STOP",
+	6: "DELETE_RULE",
+	7: "CHANGE_RULE",
+	8: "LOG_LEVEL",
+	9: "STOP",
 }
 
 var Action_value = map[string]int32{
@@ -55,8 +59,10 @@ var Action_value = map[string]int32{
 	"CHANGE_CONFIG":   3,
 	"ENABLE_RULE":     4,
 	"DISABLE_RULE":    5,
-	"LOG_LEVEL":       6,
-	"STOP":            7,
+	"DELETE_RULE":     6,
+	"CHANGE_RULE":     7,
+	"LOG_LEVEL":       8,
+	"STOP":            9,
 }
 
 func (x Action) String() string {
@@ -67,6 +73,31 @@ func (Action) EnumDescriptor() ([]byte, []int) {
 	return fileDescriptor_63867a62624c1283, []int{0}
 }
 
+type NotificationReplyCode int32
+
+const (
+	NotificationReplyCode_OK    NotificationReplyCode = 0
+	NotificationReplyCode_ERROR NotificationReplyCode = 1
+)
+
+var NotificationReplyCode_name = map[int32]string{
+	0: "OK",
+	1: "ERROR",
+}
+
+var NotificationReplyCode_value = map[string]int32{
+	"OK":    0,
+	"ERROR": 1,
+}
+
+func (x NotificationReplyCode) String() string {
+	return proto.EnumName(NotificationReplyCode_name, int32(x))
+}
+
+func (NotificationReplyCode) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_63867a62624c1283, []int{1}
+}
+
 type Event struct {
 	Time       string      `protobuf:"bytes,1,opt,name=time,proto3" json:"time,omitempty"`
 	Connection *Connection `protobuf:"bytes,2,opt,name=connection,proto3" json:"connection,omitempty"`
@@ -417,9 +448,10 @@ func (m *Operator) GetData() string {
 
 type Rule struct {
 	Name     string    `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
-	Action   string    `protobuf:"bytes,2,opt,name=action,proto3" json:"action,omitempty"`
-	Duration string    `protobuf:"bytes,3,opt,name=duration,proto3" json:"duration,omitempty"`
-	Operator *Operator `protobuf:"bytes,4,opt,name=operator,proto3" json:"operator,omitempty"`
+	Enabled  bool      `protobuf:"varint,2,opt,name=enabled,proto3" json:"enabled,omitempty"`
+	Action   string    `protobuf:"bytes,3,opt,name=action,proto3" json:"action,omitempty"`
+	Duration string    `protobuf:"bytes,4,opt,name=duration,proto3" json:"duration,omitempty"`
+	Operator *Operator `protobuf:"bytes,5,opt,name=operator,proto3" json:"operator,omitempty"`
 }
 
 func (m *Rule) Reset()         { *m = Rule{} }
@@ -436,6 +468,13 @@ func (m *Rule) GetName() string {
 	return ""
 }
 
+func (m *Rule) GetEnabled() bool {
+	if m != nil {
+		return m.Enabled
+	}
+	return false
+}
+
 func (m *Rule) GetAction() string {
 	if m != nil {
 		return m.Action
@@ -457,12 +496,13 @@ func (m *Rule) GetOperator() *Operator {
 	return nil
 }
 
+// client configuration sent on Subscribe()
 type ClientConfig struct {
 	Id                uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
 	Name              string `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
 	Version           string `protobuf:"bytes,3,opt,name=version,proto3" json:"version,omitempty"`
 	IsFirewallRunning bool   `protobuf:"varint,4,opt,name=isFirewallRunning,proto3" json:"isFirewallRunning,omitempty"`
-	// json string
+	// daemon configuration as json string
 	Config   string  `protobuf:"bytes,5,opt,name=config,proto3" json:"config,omitempty"`
 	LogLevel uint32  `protobuf:"varint,6,opt,name=logLevel,proto3" json:"logLevel,omitempty"`
 	Rules    []*Rule `protobuf:"bytes,7,rep,name=rules,proto3" json:"rules,omitempty"`
@@ -524,6 +564,7 @@ func (m *ClientConfig) GetRules() []*Rule {
 	return nil
 }
 
+// notification sent to the clients (daemons)
 type Notification struct {
 	Id         uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
 	ClientName string `protobuf:"bytes,2,opt,name=clientName,proto3" json:"clientName,omitempty"`
@@ -583,8 +624,44 @@ func (m *Notification) GetRules() []*Rule {
 	return nil
 }
 
+// notification reply sent to the server (GUI)
+type NotificationReply struct {
+	Id   uint64                `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Code NotificationReplyCode `protobuf:"varint,2,opt,name=code,proto3,enum=protocol.NotificationReplyCode" json:"code,omitempty"`
+	Data string                `protobuf:"bytes,3,opt,name=data,proto3" json:"data,omitempty"`
+}
+
+func (m *NotificationReply) Reset()         { *m = NotificationReply{} }
+func (m *NotificationReply) String() string { return proto.CompactTextString(m) }
+func (*NotificationReply) ProtoMessage()    {}
+func (*NotificationReply) Descriptor() ([]byte, []int) {
+	return fileDescriptor_63867a62624c1283, []int{9}
+}
+
+func (m *NotificationReply) GetId() uint64 {
+	if m != nil {
+		return m.Id
+	}
+	return 0
+}
+
+func (m *NotificationReply) GetCode() NotificationReplyCode {
+	if m != nil {
+		return m.Code
+	}
+	return NotificationReplyCode_OK
+}
+
+func (m *NotificationReply) GetData() string {
+	if m != nil {
+		return m.Data
+	}
+	return ""
+}
+
 func init() {
 	proto.RegisterEnum("protocol.Action", Action_name, Action_value)
+	proto.RegisterEnum("protocol.NotificationReplyCode", NotificationReplyCode_name, NotificationReplyCode_value)
 	proto.RegisterType((*Event)(nil), "protocol.Event")
 	proto.RegisterType((*Statistics)(nil), "protocol.Statistics")
 	proto.RegisterType((*PingRequest)(nil), "protocol.PingRequest")
@@ -594,6 +671,7 @@ func init() {
 	proto.RegisterType((*Rule)(nil), "protocol.Rule")
 	proto.RegisterType((*ClientConfig)(nil), "protocol.ClientConfig")
 	proto.RegisterType((*Notification)(nil), "protocol.Notification")
+	proto.RegisterType((*NotificationReply)(nil), "protocol.NotificationReply")
 }
 
 func init() {
@@ -601,77 +679,83 @@ func init() {
 }
 
 var fileDescriptor_63867a62624c1283 = []byte{
-	// 1120 bytes of a gzipped FileDescriptorProto
+	// 1213 bytes of a gzipped FileDescriptorProto
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+	0x17, 0x00, 0x00, 0xff, 0xff, 0x75, 0x04, 0xb2, 0x3f, 0x31, 0x0b, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -688,6 +772,7 @@ const _ = grpc.SupportPackageIsVersion4
 type UIClient interface {
 	Ping(ctx context.Context, in *PingRequest, opts ...grpc.CallOption) (*PingReply, error)
 	AskRule(ctx context.Context, in *Connection, opts ...grpc.CallOption) (*Rule, error)
+	Subscribe(ctx context.Context, in *ClientConfig, opts ...grpc.CallOption) (*ClientConfig, error)
 	Notifications(ctx context.Context, opts ...grpc.CallOption) (UI_NotificationsClient, error)
 }
 
@@ -717,6 +802,15 @@ func (c *uIClient) AskRule(ctx context.Context, in *Connection, opts ...grpc.Cal
 	return out, nil
 }
 
+func (c *uIClient) Subscribe(ctx context.Context, in *ClientConfig, opts ...grpc.CallOption) (*ClientConfig, error) {
+	out := new(ClientConfig)
+	err := c.cc.Invoke(ctx, "/protocol.UI/Subscribe", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *uIClient) Notifications(ctx context.Context, opts ...grpc.CallOption) (UI_NotificationsClient, error) {
 	stream, err := c.cc.NewStream(ctx, &_UI_serviceDesc.Streams[0], "/protocol.UI/Notifications", opts...)
 	if err != nil {
@@ -727,7 +821,7 @@ func (c *uIClient) Notifications(ctx context.Context, opts ...grpc.CallOption) (
 }
 
 type UI_NotificationsClient interface {
-	Send(*ClientConfig) error
+	Send(*NotificationReply) error
 	Recv() (*Notification, error)
 	grpc.ClientStream
 }
@@ -736,7 +830,7 @@ type uINotificationsClient struct {
 	grpc.ClientStream
 }
 
-func (x *uINotificationsClient) Send(m *ClientConfig) error {
+func (x *uINotificationsClient) Send(m *NotificationReply) error {
 	return x.ClientStream.SendMsg(m)
 }
 
@@ -752,6 +846,7 @@ func (x *uINotificationsClient) Recv() (*Notification, error) {
 type UIServer interface {
 	Ping(context.Context, *PingRequest) (*PingReply, error)
 	AskRule(context.Context, *Connection) (*Rule, error)
+	Subscribe(context.Context, *ClientConfig) (*ClientConfig, error)
 	Notifications(UI_NotificationsServer) error
 }
 
@@ -765,6 +860,9 @@ func (*UnimplementedUIServer) Ping(ctx context.Context, req *PingRequest) (*Ping
 func (*UnimplementedUIServer) AskRule(ctx context.Context, req *Connection) (*Rule, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AskRule not implemented")
 }
+func (*UnimplementedUIServer) Subscribe(ctx context.Context, req *ClientConfig) (*ClientConfig, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Subscribe not implemented")
+}
 func (*UnimplementedUIServer) Notifications(srv UI_NotificationsServer) error {
 	return status.Errorf(codes.Unimplemented, "method Notifications not implemented")
 }
@@ -809,13 +907,31 @@ func _UI_AskRule_Handler(srv interface{}, ctx context.Context, dec func(interfac
 	return interceptor(ctx, in, info, handler)
 }
 
+func _UI_Subscribe_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ClientConfig)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(UIServer).Subscribe(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/protocol.UI/Subscribe",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(UIServer).Subscribe(ctx, req.(*ClientConfig))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _UI_Notifications_Handler(srv interface{}, stream grpc.ServerStream) error {
 	return srv.(UIServer).Notifications(&uINotificationsServer{stream})
 }
 
 type UI_NotificationsServer interface {
 	Send(*Notification) error
-	Recv() (*ClientConfig, error)
+	Recv() (*NotificationReply, error)
 	grpc.ServerStream
 }
 
@@ -827,8 +943,8 @@ func (x *uINotificationsServer) Send(m *Notification) error {
 	return x.ServerStream.SendMsg(m)
 }
 
-func (x *uINotificationsServer) Recv() (*ClientConfig, error) {
-	m := new(ClientConfig)
+func (x *uINotificationsServer) Recv() (*NotificationReply, error) {
+	m := new(NotificationReply)
 	if err := x.ServerStream.RecvMsg(m); err != nil {
 		return nil, err
 	}
@@ -847,6 +963,10 @@ var _UI_serviceDesc = grpc.ServiceDesc{
 			MethodName: "AskRule",
 			Handler:    _UI_AskRule_Handler,
 		},
+		{
+			MethodName: "Subscribe",
+			Handler:    _UI_Subscribe_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
diff --git a/proto/ui.proto b/proto/ui.proto
index 06b73c96..1f603c7e 100644
--- a/proto/ui.proto
+++ b/proto/ui.proto
@@ -5,7 +5,8 @@ package protocol;
 service UI {
     rpc Ping(PingRequest) returns (PingReply) {}
     rpc AskRule (Connection) returns (Rule) {}
-    rpc Notifications (stream ClientConfig) returns (stream Notification) {}
+    rpc Subscribe (ClientConfig) returns (ClientConfig) {}
+    rpc Notifications (stream NotificationReply) returns (stream Notification) {}
 }
 
 message Event {
@@ -64,9 +65,10 @@ message Operator {
 
 message Rule {
     string name = 1;
-    string action = 2;
-    string duration = 3;
-    Operator operator = 4;
+    bool enabled = 2;
+    string action = 3;
+    string duration = 4;
+    Operator operator = 5;
 }
 
 enum Action {
@@ -76,10 +78,13 @@ enum Action {
     CHANGE_CONFIG = 3;
     ENABLE_RULE = 4;
     DISABLE_RULE = 5;
-    LOG_LEVEL = 6;
-    STOP = 7;
+    DELETE_RULE = 6;
+    CHANGE_RULE = 7;
+    LOG_LEVEL = 8;
+    STOP = 9;
 }
 
+// client configuration sent on Subscribe()
 message ClientConfig {
     uint64 id = 1;
     string name = 2;
@@ -91,6 +96,7 @@ message ClientConfig {
     repeated Rule rules = 7;
 }
 
+// notification sent to the clients (daemons)
 message Notification {
     uint64 id = 1;
     string clientName = 2;
@@ -100,3 +106,15 @@ message Notification {
     string data = 5;   
     repeated Rule rules = 6;
 }
+
+// notification reply sent to the server (GUI)
+message NotificationReply {
+    uint64 id = 1;
+    NotificationReplyCode code = 2;
+    string data = 3;
+}
+
+enum NotificationReplyCode {
+    OK = 0;
+    ERROR = 1;
+}