Hi @hardik.turakhia,
Using nginx as a reverse-proxy in front of ProGet is definitely the easiest way. I'm guessing you already took a look at our example nginx config file. When it comes to certificates, I find that it's easiest to use .pem files on Linux. There are a lot of guides out there on how to convert certificates to .pem files and configure them in nginx. The best source is to check with your SSL provider on how to create a fullchain (includes the intermediate certificates) .pem file. We do have some notes in the HTTPS on Windows guide in the update config section that has some commands on how to convert a .pfx file to .pem, which includes some crossover with converting .crt files to .pem files.
If you are planning to use a dynamic SSL provider like Let's Encrypt, certbot has an extension called certbot-nginx on most distros or via snap on ubuntu/debian distros. That will configure nginx for you.
Thanks,
Rich
