I have built an FTP server using the CoreFTP product and will be using the Core client to connect.
There is the option of using either SSL/TLS or SSH2 (SFTP). Is one more secure than the other?
We are using a Cisco PIX 506E firewall and would be giving the FTP server a NAT'd address, so that people outside the network can use it to, although this will be tied down by IP address, and files will be encrypted using AES when being uploaded/downloaded. I've heard many people complain that configuring the port range using SSL/TLS is a complete nightmare, whereas SFTP uses only 22.
An additional question is that the box I am running this server on is Windows 2003 at the moment, since I was planning on using MS's FTP server, however that seems too insecure. Am I ok to leave as it is, or should I rebuild the machine using XP, since Server functionality is not needed? Or would this not make a difference?
Many thanks in advance.