diff --git a/Makefile b/Makefile
index bdaf719..8b4687a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 CXX = g++
-CXXFLAGS = -Wall
+CXXFLAGS = -Wall -std=c++11
 LDFLAGS = -pthread
 OBJ = Packet.o Node.o NATItem.o NATRouter.o
 
diff --git a/NATItem.cpp b/NATItem.cpp
index cf054d3..8c4953c 100644
--- a/NATItem.cpp
+++ b/NATItem.cpp
@@ -14,37 +14,32 @@ NATItem::NATItem()
 	this->timeout = 0;
 }
 
-NATItem::~NATItem()
+const string& NATItem::getIp() const
 {
-	// TODO Auto-generated destructor stub
+	return ip;
 }
 
-void NATItem::setIp(string ip)
+void NATItem::setIp(const string& ip)
 {
-
+	this->ip = ip;
 }
 
-void NATItem::setPort(int port)
+int NATItem::getPort() const
 {
-
+	return port;
 }
 
-void NATItem::setTimeout(int timeout)
-{
-
-}
-
-string NATItem::getIp()
+void NATItem::setPort(int port)
 {
-
+	this->port = port;
 }
 
-int NATItem::getPort()
+int NATItem::getTimeout() const
 {
-
+	return timeout;
 }
 
-int NATItem::getTimeout()
+void NATItem::setTimeout(int timeout)
 {
-
+	this->timeout = timeout;
 }
diff --git a/NATItem.h b/NATItem.h
index 03d26f1..096e27a 100644
--- a/NATItem.h
+++ b/NATItem.h
@@ -18,8 +18,7 @@ class NATItem
 
 public:
 	NATItem();
-	virtual ~NATItem();
-
+/*
 	// settery
 	void setIp(string ip);
 	void setPort(int port);
@@ -28,7 +27,13 @@ public:
 	// gettery
 	string getIp();
 	int getPort();
-	int getTimeout();
+	int getTimeout();*/
+	const string& getIp() const;
+	void setIp(const string& ip);
+	int getPort() const;
+	void setPort(int port);
+	int getTimeout() const;
+	void setTimeout(int timeout);
 };
 
 #endif /* NATITEM_H_ */
diff --git a/NATRouter.h b/NATRouter.h
index c336204..310c340 100644
--- a/NATRouter.h
+++ b/NATRouter.h
@@ -11,14 +11,7 @@
 #include "common.h"
 #include "Node.h"
 #include "NATItem.h"
-/*
-typedef struct
-{
-	string ip;		// IP wewn. do którego ma trafić odpowiedź / z którego przyszło żądanie
-	int port;		// port komputera wewn. do którego ma trafić odpowiedź
-	int timeout;	// czas (w sekundach) zajętości portu (0 - port wolny)
-} NATItem;
-*/
+
 class NATRouter : public Node
 {
 	NATItem *natTable;
diff --git a/Packet.cpp b/Packet.cpp
index 5efe920..c13334e 100644
--- a/Packet.cpp
+++ b/Packet.cpp
@@ -12,11 +12,6 @@ Packet::Packet(string msg) : Packet()
 	this->setMsg(msg);
 }
 
-Packet::~Packet()
-{
-	// TODO Auto-generated destructor stub
-}
-
 //settery
 void Packet::setSrcIp(string srcIp)
 {
diff --git a/Packet.h b/Packet.h
index 81ca839..b1e1857 100644
--- a/Packet.h
+++ b/Packet.h
@@ -20,7 +20,6 @@ class Packet
 public:
 	Packet() : srcIp("0.0.0.0"), dstIp("0.0.0.0"), srcPort(0), dstPort(0), msg("") {}
 	Packet(string msg);
-	virtual ~Packet();
 
 	// settery
 	void setSrcIp(string srcIp);