Set FTP Server

Env: CentOS 6

Step

Install vsftpd(server) and ftp(client)

[root@localhost ~]# sudo yum install -y vsftpd
[root@localhost ~]# sudo yum install -y ftp

Configuration

vsftpd configuration file is /etc/vsftpd/vsftpd.conf, make sure options are set as follow:

anonymous_enable=NO
local_enable=YES
# not allowed to visit other part of server
chroot_local_user=YES

Startup

[root@localhost ~]# service vsftpd restart

Extend to FTPS

vsftpd may use SSL/TLS and serves as FTPS server.

Step

Create certificate and key file

[root@localhost ~]# mkdir /etc/ssl/private
[root@localhost ~]# openssl req -x509 -nodes -days 365 -newkey rsa:1024 -keyout /etc/ssl/private/vsftpd.pem -out /etc/ssl/private/vsftpd.pem

Config key file to vsftpd

Open /etc/vsftpd/vsftpd.conf, set certificate file options:

# SSL configuration
# RSA
rsa_cert_file=/etc/ssl/private/vsftpd.pem
rsa_private_key_file=/etc/ssl/private/vsftpd.pem

Enable SSL/TLS

# SSL
ssl_enable=YES
allow_anon_ssl=NO
force_local_data_ssl=YES
force_local_logins_ssl=YES

# TLS
ssl_tlsv1=YES
ssl_sslv2=NO
ssl_sslv3=NO

require_ssl_reuse=NO
ssl_ciphers=HIGH

Create user for access

Similiar like user creation in SFTP server setup.

Java Client

Apache Commons Net
Apache Commons Net Site
Use FTPClient to connect FTP server, and use FTPSClient to connect FTPS server.

Apache Common VFS:
See SFTP server setup.