#ubuntu #networksecurity. Remove "listening" services: CUPS & AVAHI). UFW #firewall ALLOW HTTPS ONL

Protect your Ubuntu machine on a public WiFi network. Deny all outgoing/incoming traffic except https, http, and DNS queries.
I give credit to the article below...

https://null-byte.wonderhowto.com/how-to/locking-down-linux-using-ubuntu-as-your-primary-os-part-2-network-attack-defense-0185709/

--FAIR USE--
--FOR EDUCATIONAL USE--

--CAUTION:
-- THIS WILL DISABLE APPLE SERVICES AND PRINTER SERVICES ON YOUR UBUNTU MACHINE.
--THE FOLLOWING UFW COMMANDS WILL DENY ALL INCOMING/OUTGOING TRAFFIC. ONLY HTTPS, HTTPS, AND DNS THROUGH 1.1.1.1 WILL BE ALLOWED.

--YOU MAY USE THE FOLLOWING COMMAND: 'sudo ufw reset'
TO RESET ALL UFW RULES.

To spoof your MAC address in Ubuntu, open up Network Manager and "Edit" your Wi-Fi connection. In the Identity tab, enter the MAC address you want to use into the Cloned Address box.
You should spoof your MAC address in Ubuntu. I will not demonstrate this in this video because I won’t be able to hide my personal info.

Again, Please follow the article I have linked above.
Your cloned address should be something like: “AA:BB:CC:11:22:33”

Disable or Remove CUPS
If you're never going to use a printer, CUPS can be removed entirely with sudo apt autoremove cups-daemon.

The Avahi daemon implements Apple's Zeroconf architecture (also known as "Rendezvous" or "Bonjour"). The daemon registers local IP addresses and static services using mDNS/DNS-SD.

If you don't plan on interacting with Apple products or services on other devices, avahi-daemon can be disabled using the following sudo systemctl disable avahi-daemon command.

Defend Against Port Abuse
To manage port allowances, we'll use UFW, a program that aims to provide an easy to use interface while configuring firewalls. UFW literally stands for Uncomplicated FireWall. It acts as an Iptables (packet filtering) frontend and is not intended to provide complete firewall functionality, but instead an easy way to add or remove simple rules.

Deny All Incoming & Outgoing Connections
Find Your Wireless Interface
To allow outgoing connections, you'll first need to find your Wi-Fi adapter's name using the ifconfig -a command.
I will not be doing this demonstration for personal protection.
Please use “ifconfig –a” to locate your interface.