diff --git a/Log.cpp b/Log.cpp
index b1d1436..cc9b02c 100644
--- a/Log.cpp
+++ b/Log.cpp
@@ -13,7 +13,8 @@ Log::Log()
 	this->delimiter = "";
 	this->lineNumber = 0;
 	this->objectName = NULL;
-
+	this->currentLine = 0;
+	this->firstLine = 0;
 	this->writeMutex = Log::getMutex();
 	this->setDelay(1);
 }
@@ -120,13 +121,44 @@ void Log::printProgressBar(int lineNumber, int offset, string msg,
 	cout << this->getObjectName()->c_str() << ": " << this->getDelimiter() << msg << endl;
 #endif
 }
+/*
+ * metoda wypisuje log w wielu liniach od firstLineNumber do rows-2
+ */
+void Log::printLine(string msg, bool force)
+{
+	int cols, rows;
+	getmaxyx(stdscr, rows, cols);
+
+	if (this->currentLine > rows-3)
+		this->currentLine = this->firstLine;
+
+	this->print(msg, force, this->currentLine);
+
+	pthread_mutex_lock(this->writeMutex);
+	move(this->currentLine+1, 0);
+	clrtoeol();
+	move(0,0);
+	pthread_mutex_unlock(this->writeMutex);
+	++this->currentLine;
+}
+
+int Log::getFirstLine() const
+{
+	return firstLine;
+}
+
+void Log::setFirstLine(int firstLine)
+{
+	this->firstLine = firstLine;
+	this->currentLine = firstLine;
+}
 
 void Log::setObjectName(string* objectName)
 {
 	this->objectName = objectName;
 }
 
-void Log::print(string msg, bool force)
+void Log::print(string msg, bool force, int customLine)
 {
 #ifndef DEBUG
 	if (this->getObjectName() == NULL)
@@ -136,7 +168,10 @@ void Log::print(string msg, bool force)
 		return;
 
 	pthread_mutex_lock(this->writeMutex);
-	move(this->getLineNumber(), 0);
+	if (customLine > -1)
+		move(customLine, 0);
+	else
+		move(this->getLineNumber(), 0);
 	clrtoeol();
 
     if(has_colors())
diff --git a/Log.h b/Log.h
index 5b9f85a..fc0fc9c 100644
--- a/Log.h
+++ b/Log.h
@@ -29,10 +29,13 @@ class Log
 	string *objectName;
 	pthread_mutex_t *writeMutex;
 	int delayVal;
-
+	/* do obslugi wielolinijkowosci (na dole) */
+	int firstLine;
+	int currentLine;
 public:
 	Log();
-	void print(string msg, bool force=false);
+	void print(string msg, bool force=false, int customLine = -1);
+	void printLine(string msg, bool force=false);
 	void printProgressBar(int lineNumber, int offset, string msg, float percent);
 
 	LOG_COLOR getColor() const;
@@ -48,6 +51,8 @@ public:
 	void setDelay(int delay);
 	string* getObjectName() const;
 	void setObjectName(string* objectName);
+	int getFirstLine() const;
+	void setFirstLine(int firstLine);
 };
 
 #endif /* LOG_H_ */
diff --git a/Main.cpp b/Main.cpp
index 4e85361..55363bf 100644
--- a/Main.cpp
+++ b/Main.cpp
@@ -40,9 +40,9 @@ int main(int argc, char *argv[])
 			usage(argv[0]);
 
 		nodesCount = strtol(argv[2], &endptr, 10);
-		if (nodesCount < 1 || nodesCount > 255)
+		if (nodesCount < 1 || nodesCount > 253)
 		{
-			cerr << "Invalid number of nodes format [1,255]" << endl;
+			cerr << "Invalid number of nodes format [1,253]" << endl;
 			usage(argv[0]);
 		}
 
diff --git a/Simulation.cpp b/Simulation.cpp
index e711c49..e286226 100644
--- a/Simulation.cpp
+++ b/Simulation.cpp
@@ -251,8 +251,9 @@ void Simulation::p2pSimulation()
 
 void Simulation::natOverflowSimulation(int nNodes)
 {
-	int i = 0;//, srcPort;
+	int i = 0, srcPort;
 	stringstream ss;
+	string hostname;
 
 	this->print("Creating server");
 	Node server("Server", "93.92.91.90", "255.255.255.255");
@@ -275,10 +276,8 @@ void Simulation::natOverflowSimulation(int nNodes)
 
 	this->print("Creating and setting clients");
 	Node *client = new Node[nNodes];
-	int *currentSrcPort = new int[nNodes];
 	for (i = 0; i < nNodes; ++i)
 	{
-		currentSrcPort[i] = 1;
 		client[i].setLogParams(2, CYAN, "\t");
 		ss.str("");
 		ss << "Client " << (i + 1);
@@ -318,16 +317,22 @@ void Simulation::natOverflowSimulation(int nNodes)
 	p.setDstPort(80);
 	i=0;
 
+	Log clientLog;
+	clientLog.setLogParams(5, MAGENTA, "\t");
+	clientLog.setFirstLine(6);
+	clientLog.setObjectName(&hostname);
+
 	while(true)
 	{
 		i = (nNodes>1) ? rand()%nNodes : 0;
-		if (currentSrcPort[i] == 65535)
-			currentSrcPort[i] = 1;
+		ss.str("");
 
-		//p.setSrcPort(currentSrcPort[i]++);
-		p.setSrcPort(0);
-		client[i].send(p);
+		//p.setSrcPort(0);
+		srcPort = client[i].send(p);
+		hostname = client[i].getHostname();
 
+		ss << "Sent " << client[i].getIp() << ":" << srcPort << " to 93.92.91.90:80";
+		clientLog.printLine(ss.str());
 		this->delay(150);
 		//usleep(1);
 	}