Shulou(Shulou.com)06/02 Report--

Cloud Computing Learning Route course outline Courseware: FTP Serve

Important index 2 stars

Function: to provide file sharing services

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I. Foundation of FTP

FTP: file transfer protocol

Software package: vsftpd

FTP port: control port command 21/tcp

Dataport data 20/tcp (active mode)

Configuration file: / etc/vsftpd/vsftpd.conf

II. Default configuration of vsftpd

FTP Server

= = centos6==

[root@tianyun ~] # yum-y install vsftpd

[root@tianyun ~] # service vsftpd restart

[root@tianyun ~] # chkconfig vsftpd on

SELinux

[root@tianyun ~] # sed-ri'/ ^ SELINUX=/cSELINUX=disabled' / etc/selinux/config

[root@tianyun ~] # setenforce 0

Iptables [temporary shutdown]

[root@tianyun] # iptables-F

[root@tianyun ~] # service iptables save

= = centos7==

[root@iZwz9f17um10wphrf38ni8Z ~] # cat / etc/redhat-release

CentOS Linux release 7.2.1511 (Core)

[root@iZwz9f17um10wphrf38ni8Z ~] # yum-y install vsftpd

[root@iZwz9f17um10wphrf38ni8Z ~] # touch / var/ftp/yang.txt

[root@iZwz9f17um10wphrf38ni8Z ~] # systemctl start vsftpd

[root@iZwz9f17um10wphrf38ni8Z ~] # systemctl enable vsftpd

The default firewalld/SELinux is turned off, if not:

[root@aliyun] # firewall-cmd-- permanent-- add-service=ftp

[root@aliyun] # firewall-cmd-- reload

[root@aliyun ~] # sed-ri'/ ^ SELINUX=/cSELINUX=disabled' / etc/selinux/config

[root@aliyun ~] # setenforce 0

FTP default shared directory: / var/ftp

FTP Clinet:

Lftp

[root@tianyun ~] # yum-y install lftp

[root@tianyun ~] # lftp zhufo.top

Lftp zhufo.top:~ > ls

Drwxr-xr-x 20 0 4096 Mar 31 2016 pub

-rw-r--r-- 1000 Nov 22 03:53 yang.txt

Lftp zhufo.top:/ > get yang.txt

Lftp zhufo.top:/ > mirror pub

Wget

[root@tianyun ~] # wget-- help | less

[root@tianyun ~] # wget ftp://10.18.40.100/kvm-manager-centos

[root@tianyun] # wget ftp://10.18.40.100/kvm-manager-centos-P / tmp/

[root@tianyun ~] # wget ftp://10.18.40.100/kvm-manager-centos-O / tmp/a.sh

[root@tianyun ~] # wget / / nginx.org/download/nginx-1.10.2.tar.gz

[root@tianyun] # wget-m ftp://zhufo.top/soft

Curl

Firefox,IE

[root@tianyun ~] # lftp alice@zhufo.top

Password:

Lftp alice@zhufo.top:~ > ls

-rw-r--r-- 1 0 1523 Nov 22 04:25 alice.txt

Lftp alice@zhufo.top:~ > pwd

Ftp://alice@zhufo.top/%2Fhome/alice

Lftp alice@zhufo.top:~ > put / etc/hosts

Anonymous user ftp is used by default, HOME is / var/ftp, and only files can be downloaded by default

System user: alice,HOME / home/alice, downloading and uploading by default

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3. Basic configuration, such as implementing access control.

Note: spaces in instructions, instruction errors, instruction repeats

[root@tianyun ~] # vim / etc/vsftpd/vsftpd.conf

Anonymous_enable=YES / / whether to allow anonymous users to log in to ftp

Local_enable=YES / / whether to allow local users to log in to alice

Write_enable=YES / / whether to allow writing (global)

Local_umask=022 / / controls the default permissions for local users to upload files. Umask indicates the permissions to be reduced.

Anon_umask=077 / / controls the default permissions for anonymous users to upload files

Chroot: lock local user HOME

Method 1: some users chroot

Chroot_list_enable=YES

Chroot_list_file=/etc/vsftpd/chroot_list

Method 2: all local users chroot

Chroot_local_user=YES

Anon_max_rate=500000 / / anonymous user speed limit

Local_max_rate=80000 / / Speed limit for local users

Max_clients=500 / / ftp maximum number of connections

Max_per_ip=2 / / maximum number of connections / threads per IP

Local_root=/ftproot / / specifies the root directory accessed by the local user

Anon_root=/anonroot / / specifies the root directory accessed by anonymous users

Case 1: using FTP to share YUM sources

Server:

[root@yangs ~] # mkdir / var/ftp/ {centos6u8,centos7u3}

[root@yangs] # mount-o loop / home/centos7u3.iso / var/ftp/centos7u3

[root@yangs ~] # echo "mount-o loop / home/centos7u3.iso / var/ftp/centos7u3" > > / etc/rc.local

[root@yangs ~] # chmod + x / etc/rc.d/rc.local

Client:

[root@tianyun ~] # vim / etc/yum.repos.d/centos7.repo

[centos7u3]

Name=centos7u3

Baseurl= ftp://10.18.40.100/centos7u3

Gpgcheck=0

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