Set Key="C:\Path\to\keyfile"
Cmd /c Icacls %Key% /c /t /Inheritance:d
Cmd /c Icacls %Key% /c /t /Grant %UserName%:F
Cmd /c Icacls %Key% /c /t /Remove Administrator "Authenticated Users" BUILTIN\Administrators BUILTIN Everyone System Users
Cmd /c Icacls %Key%
sudo apt update
sudo apt install nginx
sudo ufw enable
sudo ufw app list
sudo ufw allow 'Nginx HTTP'
sudo ufw status
systemctl status nginx
puttygen -t rsa -b 2048 -o private.ppk
puttygen private.ppk -O private-openssh -o private.pem
openssl rsa -in private.pem -pubout
ssh-keygen -y -f private.pem
openssl rsa -text -in private.key