What are these terms? What is the difference?
I am kind of new to servers but I understand what is a server, client, and transfer protocols like ftp, sftp, vpn etc. I have also created server using filezilla and transferred files using it, and I unsuccessfully tried creating sftp server using OpenSSH. (After doing all the stuff I got an error says, openSSH.exe is not valid windows executable.... something like that, I took help from here http://www.digitalmediaminute.com/article/1487/setting-up-a-sftp-server-on-windows, but that is a different issue I will create another thread for that, mentioned it just to give a background).
That being said, my company's IT guys is bothering our analytics team over these terms. They are saying our server is not secure, and they need some 5000 USD to buy and some monthly charges to maintain the same. (They say our existing server is a public server, I don't know what does that mean). I tried googeling but couldn't find a satisfying answer.
So please help me here.