Common FileManagers can also mount SSH (secure ftp) and nfs on demand just by typing in the URL. Pretty easy, you can also make it global:
You can use ssh for mounting in fstab like that (it is an example, and you have to adjust it):
ssh_user@ip_or_domain:/remote/path /media/sshfs-nas fuse.sshfs noauto,x-systemd.automount,_netdev,user,idmap=user,follow_symlinks,identityfile=/home/user/.ssh/ssh_key,allow_other,default_permissions,uid=1000,gid=1000,X-mount.mkdir=0755,x-gvfs-hide 0 0
or NFS have look here: [root tip] [How To] Share data using NFS it explains the server and client side configuration.