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<strong><h1>NAT VLC:</h1></strong>
<p><strong><h2>Naloga na hitro:</h2></strong><br>
  Nastavi računalnik tako, da bo vse pakete za določene naslove prepošiljal na drug računalnik, vzpostavi NAT.</p>
<p><strong><h2>Navodila:</h2></strong>
  <h3>1. Postavi dva navidezna računalnika. SimpleArbiter z diskom simpleArbiter ter NATServer. </h3> 
  Virtualke dobiš na (polz.si/media/uploads/kpov/virtualke). Za NATServer lahko uporabiš base-student-desktop-2014.
<br>
   <h3>2. Postavi NAT server tako, da ima dva omrežna vmesnika. Z enim naj bo povezan na simpleArbiter, z drugim pa na internet.</h3> 
  (settings-Network) Adapter 1 nastavimo na NAT (omrežje), adapter 2 pa na InternalNetwork (lokalno).<br>
  Simple Arbiter nastavimo na InternalNetwork(lokalno).
<br>
	<img style="width: 500px; height: 310px;" src="../images/1.jpg" alt="slika-1"></img>
   <h3>3.Na NATServer z ukazom ifconfig in z datoteko /etc/network/interfaces skonfiguriraj omrežne vmesnike<br>
	tako, da bo en povezan v WAN (internet) in en vmesnik na LAN (simpleArbiter).</h3> 
	
	-vim /etc/network/interfaces<br>
	-dopišemo:<br>
		auto eth1<br>
		iface eth1 inet static<br>
		NETMASK 255.255.0.0        # Specify based on your requirement<br>
		IPADDR 192.168.2.1        # Gateway of the LAN<br>
		NETWORK 192.168.0.0        # Optional<br>
		ADDRESS 192.168.0.0 <br>
	-ifdown eth1<br>
	-ifup eth1
<br>
<img style="width: 500px; height: 310px;" src="../images/2.jpg" alt="slika-2"></img>
   <h3>4. SimpleArbiter skofiguriraj tako, da bo privzeti prehod uporabljal NATServer.</h3> 

  <h3> 5. Nastavi DNS (etc/resolv.conf) na NATServerju.</h3> 
		vim /etc/resolv.conf
		nameserver 203.145.184.13      # Primary DNS Server provided by the ISP<br>
		nameserver 202.56.250.5        # Secondary DNS Server provided by the ISP<br>
	Nato nastavimo še host:<br>
		vim /etc/hosts<br>
		Prvo vrstico zamenjamo z:<br>
			 127.0.0.1       nat localhost.localdomain   localhost<br>
			 
   <h3>6. Omogoči posredovanje IP naslovov na NATServerju.</h3> 
		echo 1 > /proc/sys/net/ipv4/ip_forward
		
   <h3>7. Nastavi NAT z uporabo paketa iptables na NATServerju.</h3> 
		
		apt-get install iptables<br>
		iptables -F<br>
		ptables -t nat -F<br>
		iptables -t mangle -F	<br>
		iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE<br>
		iptables -A FORWARD -i eth1 -j ACCEPT<br><br>
		
		service iptables restart

   <h3>8. Na simpleArbiter z vlc preberi naslov, na katerem si lahko ogledaš kratek filmček. </h3> <br>


   <h3>8. Dodatni viri </h3> <br>
-https://www.howtoforge.com/nat_iptables<br>
-http://www.bctes.com/nat-linux-iptables.html<br>





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