How to set up NAT on pptpd-VPN with one network adapter?

Question

linux

Hello.
There is a problem: you need to make a VPN from a cloud server (Centos / Ubuntu) with one network adapter, so that when people connect to the VPN, all traffic leaves through a remote gateway.
From the simplest - I took pptpd, configured it, but I can't deal with NAT.
What rules should be written in order for people from the VPN subnet to flow through eth0?
If possible - using an example, let:
Physical adapter = eth0 = 1.1.1.1
Wirth VPN adapter = eth1 = 2.2.2.2

Answer 1

So have you tried it?
Values, of course, change for themselves.
In general - here , for example, is a translation of the iptables manual (the old version, there is a fresh version in English).