### Week 1 ### Session 1 ### System & Network Administration Fundamentals ### Nataliya Tupikina --- ## 1. Creating a Virtual Network Ubuntu Server and Clients installed with VirtualBox ![](https://i.imgur.com/9wP4DJZ.jpg) ![](https://i.imgur.com/eIj2MkJ.jpg) ![](https://i.imgur.com/Xk7oRrV.jpg) Ubuntu Server is in the same network as Ubuntu Clients ![](https://i.imgur.com/6aMlbmN.jpg) --- ## 2. Creating and Setting up a DHCP Server Turning off DHCP in VirtualBox ![](https://i.imgur.com/R2IpA9W.jpg) Dnsmasq running on Server ![](https://i.imgur.com/lUGK1GV.jpg) Setting dnsmasq in /etc/dnsmasq.conf ![](https://i.imgur.com/KQGf8DA.jpg) Clients have new IP, which lie between 192.168.56.10 and 192.168.56.20. Also shows Client pinging the google.com ![](https://i.imgur.com/tt2TUEY.jpg) --- ## Bonus ARP - Adress Resolution Protocol, used to resolve IP adresses to MAC adresses. ARP cache stores IP adress to MAC adress associations. There are Dynamic and Static ARP entries.