MAC is media access control, a permanent address to network devices, and it's unique.
Changing a MAC address can also be useful to impersonate other devices.
We can change the MAC address using ifconfig like so:
ifconfig [interface] down
ifconfig [interface] hw ether [mac:address]
ifconfig [interface] up
We can also use macchanger like this:
macchanger -r [interface] # to get a random mac
macchanger -m [mac:address] [interface] # to set a custom mac
We can change the MAC address manually:
ifconfig [interface_name] down ifconfig [interface_name] hw ether [new:mac:address] ifconfig [interface_name] up
Proxychains are set up to be used with tor by default. They can be ran as:
proxychains nmap 192.168.1.1/24
The proxychains configuration can be modified at /etc/proxychains4.conf. Proxies can be added like this:
[...]
http 183.111.169.207 3128
socks4 104.128.120.187 1080
https 75.66.83.12 80
http 91.221.61.126 3128