E10.md

Documentation for E10

Goal

The goal of this assignment was to configure the Network address translation (NAT) specifically Many to 1 NAT within the network. After that was done, I verified the functionality of the NAT through the show command and Wireshark.

Configuring Many-to-1 NAT

I decided to configure NAT without removing the firewall

set nat source rule 10 outbound-interface eth2
set nat source rule 10 translation address masquerade

set nat source rule 10 source address 192.168.15.0/24

NAT config on Vyos 3

Investigating traffic

nmap Lubuntu 1,2,3 --> Lubuntu 4

root@lubuntu-virtualbox:~# nmap -D 192.168.15.2,192.168.15.65,192.168.15.130 100.24.15.2
Starting Nmap 7.80 ( https://nmap.org ) at 2022-04-11 15:39 EEST
Nmap scan report for 100.24.15.2
Host is up (0.0057s latency).
Not shown: 997 filtered ports
PORT    STATE  SERVICE
22/tcp  closed ssh
80/tcp  open   http
443/tcp closed https

show on Vyos 3 after using nmap

show nat source translations

show nat destination translations 

I cloned Lubuntu 4 and turned it into the Wireshark machine

To check if the nat configuration is working I have pinged Lubuntu 4 from Lubuntu 1 while wiresharking public and LAN1 (one at a time)

Lubuntu 1 --> Lubuntu 4 (Wireshark connected to LAN1)

Lubuntu 1 --> Lubuntu 4 (Wireshark connected to public)