> On 16 Aug 2023, at 20:13, Mario Marietto <marietto2008@???> wrote:
>
> 
> It's too much out of my knowledge. I'm not able to understand what's the correct syntax to use.

The manpage for iptables-translate says it takes the same arguments as iptables. You can try:

iptables-translate -t nat -A POSTROUTING -o eth0 -j MASQUERADE

and that should output the equivalent nftables command. I don’t have a terminal here to try that myself right now.

Tom