FTP (Introduction): 

• It is a protocol used to download files from FTP Server to the client computer and vice versa (upload files to the FTP server from Client computer).
• Port no. 21 – used by server for incoming connection from client.
  (Connection, response, command passes using this port)
• Port no. 20 – outbound control (data flow)

 

 

FTP SERVER (Configuration): 

Install the required packages:

# yum   install   *ftp*

 

Add entries of network (in hosts.allow) that can communication with ftp server:

# vim   /etc/hosts.allow
vsftpd:   192.168.1.       (to allow this network)

 

If you have iptable enabled, allow TCP and UPD traffic for port no. 20 & 21:

# vim /etc/sysconfig/iptables

 

Add entry of ftp in IPTABLES_MODULES as below:

# vim /etc/sysconfig/iptables-config   
IPTABLES_MODULES= “ip_conntrack_netbios_ns   ip_conntrack_ftp”

 

Add user who you want to allow ftp access:

# vim /etc/vsftpd/user_list                                 

 

Add user who you want to deny ftp access:
# vim /etc/vsftpd/ftpusers                                 

 

# vim /etc/vsftpd/vsftpd.conf

anon_upload_enable=yes (to allow upload to the FTP Server)

anonymous_enable=NO  (by default it is YES)
userlist_enable=NO          (by default it is YES)

Note: if you don’t change the above setting in vsftpd.conf, anonymous users are allowed for ftp access)

# service   network   restart
# service   iptables   restart
# service   vsftpd    restart

 

Configuration Video: