Can't share internet with Ubuntu Server. How to setup?

Question

ubuntu

I set up the network according to this Faq , everything connects, pings but does not distribute the Internet for some reason. there is no information on setting up dpkg-reconfigure arno-iptables-firewall, I searched the Internet, there are of course instructions, but I need it for how I set it up in this fake. And in general, according to this fact, after the 3rd step, the Internet should be distributed?

Answer 1

Do you have packet routing enabled?
Check the net.ipv4.ip_forward value in the /etc/sysctl.conf file:
On a clean installation of Ubuntu Server, this setting will be 0. Change to 1:
After a reboot it should work. To change on the fly, we do:
More on the topic:
NAT and iptables (How to distribute the Internet through a second ...

Answer 2

generally succeeded. Now the laptop is getting internet. I have a dlink wifi router, how can I set it up now so that the server gives the Internet to the router, and the router already distributes it?