which server to offer files to friends

[Franz Waldmüller]

Hi,

I am looking for a solution to offer files on my ubuntu server to my 
friends.
I considered several option but none is

* ftp with individual user accounts: ftp is not encrypted, I don't care 
about the data but I prefer not sending passwords plain text.
If I switch on the TLS/SSL option for the vsftpd, clients will need a 
special ftp-client to connect. I hope that if I set 
force_anon_logins_ssl=NO then access to the anonymous-ftp site will 
still be possible.
Disadvantage of this solution: I have to copy all files into the users 
home directory as I use the chroot option.

* Create torrent files: I don't have to copy the desired file to the 
users home directory. Creating the torrents need a lot of manual input. 
The solution is kind of problematic with confidential documents. If my 
friend sends the torrent file around the world, he is to blame but I am 
the person who is seeding the data.

* ssh-login: I do not want to give friends from untrusted computer 
ssh-access to my machine.

* Any other solution? What about WebDav? Up to now I only run print, 
bittorrent,ssh and ftp server on this machine. If I keep apache and 
webdav at Not a lot of vulnerabiliyI  If I keep all apache and webdav 
settings at their default value will installing webdav increase the 
vulnerability of my server?

I appreciate any suggestion.
Franz