Share your Wi-Fi connectiong through cable

share_wifi.sh

# Based on tutorial at:
# https://null-byte.wonderhowto.com/how-to/share-your-laptops-wireless-internet-with-ethernet-devices-0130528/

# Bring your ethernet interface up and assign an IP to it
sudo ifconfig enp7s0 up
sudo ifconfig enp7s0 192.168.2.1

# Enable IPv4 forwarding
sudo echo "1" | sudo tee /proc/sys/net/ipv4/ip_forward

# Forward traffic to 192.168.2.* IP range
sudo iptables -t nat -A POSTROUTING -o wlp6s0 -s 192.168.2.0/24 -j MASQUERADE

echo "On your guest device use:"
echo "Address: 192.168.2.2 (or any other in this range)"
echo "Netmask: 255.255.255.0"
echo "Gateway: 192.168.2.1"
echo "DNS: 8.8.8.8 (from Google)"