unable to run ufw on Ubuntu

This is the error message I am getting Perhaps iptables or your kernel needs to be upgraded

I have tried the following

sudo apt-get install --reinstall iptablessudo apt-get install --reinstall linux-modules-5.4.0-42-generic

The second one give me this error message Couldn't find any package by regex 'linux-modules-5.4.0-42-generic

So I guess I am missing something, anybody has an idea what I might be missing?

I am using Ubuntu 24, and I am trying to access my VPS via SSH to setup wireguard client to import the configuration to my router, and I am getting permission denied, publickey, password.

But in order to access the VPS via SSH the firewall must be running if I am not wrong.