NAT VLC:

Explanation:


Set up a computer so that it forwards all packets meant for a certain address, to another computer.

Instructions:

1. Create two VMs. SimpleArbiter using the disk simpleArbiter and NATServer.

You can get the disks at polz.si/media/uploads/kpov/virtualke. As for the NATServer VM, you can use any disk you want like base-student-desktop-2014.

2. NATServer should have two network interfaces. One should connect to the simpleArbiter VM and the other to the internet.

Adapter 1 should be NAt and adapter 2 should be Internal Network.
Simple Arbiter must be connected to the Internal Network.
slika-1

3.On NATServer use ifconfig or /etc/network/interfaces to configure the network interfaces you created in virtualbox.

-vim /etc/network/interfaces
-Set it up like this:
auto eth1
iface eth1 inet static
NETMASK 255.255.0.0 # Specify based on your requirement
IPADDR 192.168.2.1 # Gateway of the LAN
NETWORK 192.168.0.0 # Optional
ADDRESS 192.168.0.0
-ifdown eth1
-ifup eth1
slika-2

4. Configure SimpleArbiter so that it uses NATServer as the default gateway.

5. Set up DNS (etc/resolv.conf) on NATServer.

vim /etc/resolv.conf nameserver 203.145.184.13 # Primary DNS Server provided by the ISP
nameserver 202.56.250.5 # Secondary DNS Server provided by the ISP
Than we set up the host:
vim /etc/hosts
Replace the first line with:
127.0.0.1 nat localhost.localdomain localhost

6. Enable IP forwarding on NATServerju (should be run as root).

echo 1 > /proc/sys/net/ipv4/ip_forward

7. Set up NAT on NATServer using iptables.

apt-get install iptables
iptables -F
ptables -t nat -F
iptables -t mangle -F
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
iptables -A FORWARD -i eth1 -j ACCEPT

service iptables restart

8. Use vlc on simpleArbiter to watch the video over your network.


8. Additional resources


-https://www.howtoforge.com/nat_iptables
-http://www.bctes.com/nat-linux-iptables.html