Ubuntu 16.04
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ProFTPD Over SSL/TLS
2016/05/18
 
Configure ProFTPD to use SSL/TLS.
[1] Create certificates.
root@www:~#
cd /etc/ssl/private

root@www:/etc/ssl/private#
openssl req -x509 -nodes -newkey rsa:2048 -keyout proftpd.pem -out proftpd.pem -days 365

Generating a 1024 bit RSA private key
......++++++
.......++++++
writing new private key to '/etc/pki/tls/certs/proftpd.pem'
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [AU]:
JP
   
# country

State or Province Name (full name) [Some-State]:
Hiroshima
   
# State

Locality Name (eg, city) []:
Hiroshima
   
# city

Organization Name (eg, company) [Internet Widgits Pty Ltd]:
GTS
   
# company

Organizational Unit Name (eg, section) []:
Server World
   
# department

Common Name (eg, YOUR name) []:
www.srv.world
   
# server's FQDN

Email Address []:
root@srv.world
   
# admin's email
root@www:/etc/ssl/private#
chmod 600 proftpd.pem

[2] Configure ProFTPD.
root@www:~#
vi /etc/proftpd/proftpd.conf
# line 138: uncomment

Include /etc/proftpd/tls.conf
root@www:~#
vi /etc/proftpd/tls.conf
# line 10-12: uncomment

TLSEngine               on
TLSLog                  /var/log/proftpd/tls.log
TLSProtocol             TLSv1.2
# line 27-28: uncomment and change

TLSRSACertificateFile        
/etc/ssl/private/proftpd.pem

TLSRSACertificateKeyFile  
/etc/ssl/private/proftpd.pem
root@www:~#
systemctl restart proftpd

FTP Client : Ubuntu
 
Configure FTP Client to use FTPS connection.
[3] Install FTP Client and configure like follows.
ubuntu@client:~$
vi ~/.lftprc
# create new

set ftp:ssl-auth TLS
set ftp:ssl-force true
set ftp:ssl-protect-list yes
set ftp:ssl-protect-data yes
set ftp:ssl-protect-fxp yes
set ssl:verify-certificate no
xerus@client:~$
lftp -u ubuntu www.srv.world

Password:
lftp ubuntu@www.srv.world:~>
FTP Client : Windows
[4] For example of FileZilla on Windows, Open [File] - [Site Manager].
[5] Input user info like follows, for encryption field, select [explicit FTP over TLS].
[6] The user's Password is required. Input it.
[7] The following warning is shown because the certificate is self signed, it's no ploblem. Go next.
[8] Just connected with FTPS.
 
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