Say that an ext4 file system on /dev/sda7 was to be mounted at /ftpfiles. As root you could manually do the job with ...
mount -t ext4 -o noexec /dev/sda7 /ftpfiles
For this to happen at every boot you would put it in /etc/fstab
/dev/sda7 /ftpfiles ext4 rw,auto,noexec 1 2
Of course you should add addtional options as appropriate. This is just an example using the noexec option.
You can simply type mount
to see how all of the filesystems on your computer are currently mounted.
See man mount
for more information.