File Server II: FTP Server (PUREFTP)

FTP (file Transfer Protocol), which is used primarily for file transfer (especially handy for transferring large files), is used for two-way transmission of control files on the Internet. This service allows users to access a large number of programs and information on the server by connecting their PC to all servers running the FTP protocol around the world.

The primary role of FTP is to have users connect to a remote computer (the FTP service is running on the remote computer), to see which files are on that computer, to copy the required files from the remote computer locally, or to transfer the local files to the remote computer. However, there is a certain risk in the transmission process, because the data above the Internet is completely unprotected clear text transmission mode.

The FTP software that comes with CentOS or RedHat Linux is called vsftp, but here is a second software (PURE-FTPD) that provides the FTP service. This software is more flexible than the vsftp configuration.

Let's take a look at the deployment and optimization process of pureftp, where we use the source package to compile the installation method:

1, download the source package: PURE-FTPD's official website is: HTTP://WWW.PUREFTPD.ORG/PROJECT/PURE-FTPD

We can go to the website to download the version we need.

Cd/usr/local/src

wget wget https://download.pureftpd.org/pub/pure-ftpd/releases/pure-ftpd-1.0.42.tar.bz2

2. Installation steps:

Tar xjvf pure-ftpd-1.0.42.tar.bz2

CD pure-ftpd-1.0.42

./configure \

--PREFIX=/USR/LOCAL/PUREFTPD \

--WITHOUT-INETD \

--with-altlog \

--with-puredb \

--with-throttling \

--with-peruserlimits \

--with-tls

Note: We may encounter errors here, after compiling the system will prompt: Configure:error:OpenSSL headers not found.

The workaround is: Yum install-y OpenSSL openssl-devel, if you cannot find both packages, you will need to install the Yum extension Source: Yum Install-y epel-release

Make && make install

3, Configuration pure-ftpd

CD Configuration-file

Mkdir-p/usr/local/pureftpd/etc/

CP pure-ftpd.conf/usr/local/pureftpd/etc/pure-ftpd.conf

CP pure-config.pl/usr/local/pureftpd/sbin/pure-config.pl

chmod 755/usr/local/pureftpd/sbin/pure-config.pl

Before starting PURE-FTPD, you need to modify the configuration file, configuration file for/usr/local/pureftpd/etc/pure-ftpd.conf, you can open to see, there are a lot of content, the following is the author provides the configuration file content, If you feel that the direct change is too troublesome, directly bring your own configuration to remove, and then paste the following configuration can be

Chrooteveryone Yes

Brokenclientscompatibility No

Maxclientsnumber 50

Daemonize Yes

Maxclientsperip 8

Verboselog No

Displaydotfiles Yes

AnonymousOnly No

Noanonymous No

Syslogfacility FTP

Dontresolve Yes

MaxIdleTime 15

Puredb/usr/local/pureftpd/etc/pureftpd.pdb

Limitrecursion 3136 8

Anonymouscancreatedirs No

Maxload 4

Antiwarez Yes

Umask 133:022

Minuid 100

ALLOWUSERFXP No

ALLOWANONYMOUSFXP No

Prohibitdotfileswrite No

Prohibitdotfilesread No

Autorename No

Anonymouscantupload No

Pidfile/usr/local/pureftpd/var/run/pure-ftpd.pid

Maxdiskusage 99

Customerproof Yes

4. Start PURE-FTPD

cd/usr/local/pureftpd/

./sbin/pure-config.pl./etc/pure-ftpd.conf

If it is successful, it displays a long line of information that starts with Running, or it is an error message. Restarting may be a bit cumbersome, after all, we don't have a startup script. Restart, you can use the following command to implement.

Killall PUREF-FTPD

cd/usr/local/pureftpd/;/sbin/pure-config.pl./etc/pure-ftpd.conf

5. Create an Account

The account used by PURE-FTPD is not a Linux system account, but a virtual account. Because it's safer to do so.

mkdir/data/www/

Useradd FTP

Chown-r ftp:ftp/data/www/

/USR/LOCAL/PUREFTPD/BIN/PURE-PW Useradd ftp_user1-uftp-d/data/www/

Password:

Enter It again:

Where-u associates the virtual user Ftp_user1 with the system user www, that is to say, using ftp_user1
Once the account is logged in to FTP, it will read the file or download it as www. -D behind the directory is Ftp_user1 account
Home directory so that Ftp_user1 can only access its home directory/data/www/. It's not done yet.
The key step is to create a user information database file:

/USR/LOCAL/PUREFTPD/BIN/PURE-PW MKDB

PURE-PW can also list the current FTP account, of course, you can delete an account, we create an account:

/USR/LOCAL/PUREFTPD/BIN/PURE-PW useradd ftp_user2-uwww-d/tmp

/USR/LOCAL/PUREFTPD/BIN/PURE-PW MKDB

Note: Each time you create an account, execute this command, generate a database file, or you will get an error.

List Current Account:

/USR/LOCAL/PUREFTPD/BIN/PURE-PW List

The command to delete the account is:

/USR/LOCAL/PUREFTPD/BIN/PURE-PW Userdel Ftp_user2

6. Testing

Download Lftp:yum install-y lftp on the remote machine

Connect FTP Service Using remote machine: lftp [email protected]

This article is from "The Miracle Teenager" blog, please be sure to keep this source http://raffaelexr.blog.51cto.com/8555551/1723325

File Server Two: FTP server (PUREFTP)