Share Internet over LAN and WiFi at the same time (Ubuntu)

Question

Yota

Greetings.
The following problem arose:
Yota is connected to a laptop with Ubuntu on board (this is done on purpose, the laptop is raised to the attic - the signal is better), a twisted pair cable is lowered from the laptop into the house to the router. This scheme works wonderfully and distributes the Internet, in the aisles of the house. Therefore, there was a need to distribute the same Internet also via WiFi. The question is is this possible? If possible, please send me a link to some setup manual.
Thank you for your attention to my question.

Answer 1

https://debian.pro/249 read here.
In short, then.
Let's say you have an iota usb0 interface. Then we do

sed '/net.ipv4.ip_forward/d' /etc/sysctl.conf
echo > "net.ipv4.ip_forward=1" > /etc/sysctl.conf

Well, the last command will need to be "autorun" somehow, I use iptables-persistense for this.

Answer 2

habrahabr.ru/post/89420
superuser.com/questions/442166/sharing-wifi-connection