ftp server is used
to transfer files between server and clients. All major operating
system supports ftp. ftp is the most used protocol over internet
to transfer files. Like most Internet operations, FTP works on a
client/ server model. FTP client programs can enable users
to transfer files to and from a remote system running an FTP server
program.
Any Linux system can operate as an FTP server. It has to
run only the server software—an FTP daemon with the appropriate configuration.
Transfers are made between user accounts on client and server systems. A user
on the remote system has to log in to an account on a server and can
then transfer files to and from that account's directories only.
A special kind of user account, named ftp,
allows any user to log in to it with the username “anonymous.” This
account has its own set of directories and files that are considered public,
available to anyone on the network who wants to download them.
The numerous FTP sites on the Internet are FTP servers
supporting FTP user accounts with anonymous login. Any Linux system can be
configured to support anonymous FTP access, turning them into network FTP
sites. Such sites can work on an intranet or on the Internet.
Configuring the ftp Server
The vsftpd RPM
package is required to configure a Red Hat Enterprise
Configure vsftpd
server
In this example we will configure a vsftpd server
and will transfer files from client side.
For this example we are using three systems one linux
server one linux clients and one windows xp clients. To complete
these per quest of ftp server Follow this link
per
quest of vsftpd
server
·
A linux
server with ip address 192.168.0.254 and hostname Server
·
A linux
client with ip address 192.168.0.1 and hostname Client1
·
A window
client with ip address 192.168.0.2 and hostname Client2
·
Updated
/etc/hosts file on both linux system
·
Running
portmap and xinetd services
·
Firewall
should be off on server
We have configured all these steps in our pervious
article.
necessary
configuration for vsftpd
server
We suggest you to review that article before start
configuration of ssh server. Once you have completed the necessary steps follow
this guide.
Three
rpm are required to configure ssh server. vsftpd, portmap,
xinetd check them if not found then install
Now
check vsftpd, portmap, xinetd service in system service it should be
on
#setup
Select
System service from list
[*]portmap
[*]xinetd
[*]vsftpd
Now
restart xinetd and portmap and vsftpd service
To keep on these services after reboot on then via chkconfig command
After reboot verify their status. It must be in running condition
To keep on these services after reboot on then via chkconfig command
After reboot verify their status. It must be in running condition
Create a
normal user named vinita
Login
for this user on other terminal and create a test file
On Linux client
ping from ftp
server and run ftp command and
give username and password
after login you can download files from the specified directories
after login you can download files from the specified directories
Most commonly commands used on ftp prompt are
put To upload files on server
get To download files from server
mput To upload all files
mget To download all files
? To see all available command on ftp
prompts
cd To change remote directory
lcd To change local directory
On window clients
Now go
on window clients and create a file. copy con command is used to
create files on window. To save use CTRL+Z
Now ping
from ftp server and invoke ftp session from server, login
from user account anddownload as well as uploads files
Enable root account for ftp session and set permission on
user
By
default on vsftpd server root account is disable. You cannot login
from root account.
Now we
will enable root account for ftp session and same time we
will disable our normal user vinita to use ftp sessions.
open
file /etc/vsftpd/ftpusers . Users whose name are set in this file
will not allowed to login from ftp.
By
default this file have an entry for root that why root are
not allowed to use ftp. removeroot from list and add user
vinita
Now
remove entry form /etc/vsftpd/user_list files. Users whose names are
set in this file are also not allowed to login from ftp even they are
not prompt for password.
By default this file have an entry for root that way root is denied form login even not asked for password remove root from list and add user vinita
By default this file have an entry for root that way root is denied form login even not asked for password remove root from list and add user vinita
After
saving change in these files restart the vsftpd service
Now go
on client system and login from root this time root will
login
Now try
to login form user vinita she should not prompt form password
also
How to set login
banner for ftp server
To set
login banner open /etc/vsftpd/vsftpd.conf file and search for this
tag
Uncomment this tag and set your banner and save file , and restart the vsftpd service
Uncomment this tag and set your banner and save file , and restart the vsftpd service
Go on
client system and check banner it will appear before user login
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