Phillip Hallam-Baker wrote:
Whether FTP is easier or harder is besides the point, they are both vastly harder than is necessary.
Because we have already configured FTP capable servers, whether FTP is easier or harder than necessary is besides the point
One of the weaknesses of the Internet architectural model as insisted upon by many here is that insisting 'anything can talk to anything' makes it really hard to secure file servers locking them to only be visible to the local network.
If making initial TTL 1 is not enough, feel free to make routing tables of the servers contain entries for local IP addresses only. Masataka Ohta