diff --git a/NATItem.cpp b/NATItem.cpp
new file mode 100644
index 0000000..31f7791
--- /dev/null
+++ b/NATItem.cpp
@@ -0,0 +1,20 @@
+/*
+ * NATItem.cpp
+ *
+ *  Created on: 10-01-2017
+ *      Author: Piotr Dergun
+ */
+
+#include "NATItem.h"
+
+NATItem::NATItem()
+{
+	// TODO Auto-generated constructor stub
+
+}
+
+NATItem::~NATItem()
+{
+	// TODO Auto-generated destructor stub
+}
+
diff --git a/NATItem.h b/NATItem.h
new file mode 100644
index 0000000..ec5ece9
--- /dev/null
+++ b/NATItem.h
@@ -0,0 +1,25 @@
+/*
+ * NATItem.h
+ *
+ *  Created on: 10-01-2017
+ *      Author: Piotr Dergun
+ */
+
+#ifndef NATITEM_H_
+#define NATITEM_H_
+
+#include <iostream>
+using namespace std;
+
+class NATItem
+{
+	int timeout;	// czas (w sekundach) zajętości portu (0 - port wolny)
+	string ip;		// IP wewn. do którego ma trafić odpowiedź / z którego przyszło żądanie
+	int port;		// port komputera wewn. do którego ma trafić odpowiedź
+
+public:
+	NATItem();
+	virtual ~NATItem();
+};
+
+#endif /* NATITEM_H_ */
diff --git a/Packet.cpp b/Packet.cpp
index 9f6a7ff..2efb34a 100644
--- a/Packet.cpp
+++ b/Packet.cpp
@@ -19,12 +19,12 @@ Packet::~Packet()
 }
 
 //settery
-void Packet::setSrcIP(string ip)
+void Packet::setSrcIp(string ip)
 {
 
 }
 
-void Packet::setDstIP(string ip)
+void Packet::setDstIp(string ip)
 {
 
 }
@@ -44,12 +44,12 @@ void Packet::setMsg(string msg)
 
 }
 
-string Packet::getSrcIP()
+string Packet::getSrcIp()
 {
 
 }
 
-string Packet::getDstIP()
+string Packet::getDstIp()
 {
 
 }
diff --git a/Packet.h b/Packet.h
index 732d150..2d8ca9d 100644
--- a/Packet.h
+++ b/Packet.h
@@ -13,8 +13,8 @@ using namespace std;
 
 class Packet
 {
-	string srcIP;
-	string dstIP;
+	string srcIp;
+	string dstIp;
 	int srcPort;
 	int dstPort;
 	string msg;
@@ -23,15 +23,15 @@ public:
 	virtual ~Packet();
 
 	//settery
-	void setSrcIP(string ip);
-	void setDstIP(string ip);
+	void setSrcIp(string ip);
+	void setDstIp(string ip);
 	void setSrcPort(int port);
 	void setDstPort(int port);
 	void setMsg(string msg);
 
 	//gettery
-	string getSrcIP();
-	string getDstIP();
+	string getSrcIp();
+	string getDstIp();
 	int getSrcPort();
 	int getDstPort();
 	string getMsg();