Ok I just wanted to recommend a little bit of a addition to openSUSE. The recommendation is., Making New types of file systems
for the actual filesystems other then ext2 mayby something only this distrobution can understand. I thought about it and it might make it hard to mount across a network and thats probably alot of extra work for the mount command but mount 192.168.15.100:/ /mnt/Network_Mnt would be a cool feature to keep
but worth passing up having a file system type only novell linux understands that is hard to intigrate into other systems easily
so that I can keep things not acceable to other operating systems.
And it would not work. Regardless of what fs type you have on your system, when NFS exported it can be mounted on another system as an NFS filesystem. You can NFS mount on Linux from any Unix system having a proprietry filesystem type (ufs, hpfs, VxFS, ZFS to name but a few).
That’s not the way to avoid that file systems (or parts of it) are not accesable via network. As other said it wouldn’t work. The file system must be understood by the local system. The system that opens/writes files on a network ressource is not interested in the local file system but in the network file system or in general in the handler how to read/write files on the shared ressource.
The way to avoid that others on the network have access to your files (or whole file systems) is not to share them. If you don’t use NFS, Samba or any other server software which enables exports, shares or however they are called in that software others can’t access your files. If you need to use such software because you need to share files you have to configure it correctly so only the files you like to share are accessable but not the whole file system. Also you can/must set the correct access rights on your files/dirs/file systems.
To avoid an access from outside our network (e. g. via internet) we use firewalling. So you need a machine (e. g. a slim server) inbetween your internet access point and your local network which controlls incoming and outgoing traffic and set appropriate firewall rules to keep other ppl out.