front
Download information
cd /home rm -f download rm -f teachers.ini rm -rf course wget --ftp-user=ftp --ftp-password=ftp --preserve-permissions ftp://47.119.161.215/* ./download zag 47.119.161.215 cd /home/course cat linux_exam.txt | grep 3119004122 ./upload 3119004122 47.119.161.215 ./getScore 3119004122 47.119.161.215
global replacement
in command mode (:)
%s/replace/replace/g
example:
%s/149/36/g
sh
wget 106.55.246.243/httpN.sh
wget 106.55.246.243/ftp.sh
loopback card
Loopback network card → properties → ipv4 → properties
VMware network card
Edit → Virtual Network Editor
Virtual machine settings
33 network card
Enter administrator privileges first
su
1234
Then modify the network card configuration
vi /etc/sysconfig/network-scripts/ifcfg-ens33 TYPE="Ethernet" PROXY_METHOD="none" BROWSER_ONLY="no" BOOTPROTO="static" DEFROUTE="yes" IPV4_FAILURE_FATAL="no" IPV6INIT="yes" IPV6_AUTOCONF="yes" IPV6_DEFROUTE="yes" IPV6_FAILURE_FATAL="no" IPV6_ADDR_GEN_MODE="stable-privacy" NAME="ens33" UUID="8972f637-4947-42cb-8150-19db760514ef" DEVICE="ens33" ONBOOT="yes" IPADDR=172.28.149.1 NETMASK=255.255.255.0
Disconnect and restart ens33 to view the configuration
ifdown ens33 ifup ens33 ifconfig ens33
Test whether the network is connected under Linux
ping 172.28.149.100 -c 4
turn off firewall
Check the firewall status, active means open, inactive means close
systemctl is-active firewalld.service
Temporarily turn off the firewall
systemctl stop firewalld.service
Permanently turn off firewall (no longer starts on reboot)
systemctl disable firewalld.service
close selinux
Check the status of selinux, Enforcing means start, permissive means close
getenforce
temporarily closed
setenforce 0
change source
The default source is cn99, if the download is slow, change the source
Enter the yum source configuration directory
cd /etc/yum.repos.d
Backup the original yum source for easy recovery
mv CentOS-Base.repo CentOS-Base.repo.bk
Download the new CentOS-Base.repo to /etc/yum.repos.d/
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
Run yum makecache to generate the cache
yum clean all yum makecache
HTTP
Install DNS
yum install -y bind
Change setting
vim /etc/named.conf
In the options field, the field value of listen-on port 53 (the first line) and allow-query (the last line) is any
Modify logging fields
logging { channel "default_syslog" { syslog daemon; severity info; }; channel general_log { file "data/general_log" versions 3 size 20m; severity info; print-time yes; print-severity yes; print-category yes; }; channel query_log { file "data/query_log" versions 3 size 20m; severity info; print-time yes; print-severity yes; print-category yes; }; category general{ general_log; }; category queries{ query_log; }; };
Add forward zone and reverse zone configuration information at the end of the file
vim /etc/named.rfc1912.zones zone "example.com" { type master; file "data/example.com.zone"; allow-update { none; }; }; zone "149.28.172.in-addr.arpa" { type master; file "data/172.28.149.arpa"; allow-update { none; }; };
Forward zone file and reverse zone file
cp /var/named/named.localhost /var/named/data/example.com.zone cp /var/named/named.localhost /var/named/data/172.28.149.arpa chown named.named /var/named/data/example.com.zone chown named.named /var/named/data/172.28.149.arpa
Modify dns forward and reverse configuration
positive
vim /var/named/data/example.com.zone $TTL 1D example.com. IN SOA dns.example.com. admin.example.com. ( 0 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum example.com. IN NS dns.example.com. dns IN A 172.28.149.1 example.com. IN MX 10 mail.example.com. example.com. IN MX 11 mail2.example.com. example.com. IN MX 12 mail3.example.com. bbs IN CNAME www samba IN A 172.28.149.1 ftp IN A 172.28.149.1 mail IN A 172.28.149.1 mail2 IN A 172.28.149.1 mail3 IN A 172.28.149.1 www IN A 172.28.149.1 abc IN A 172.28.149.203 xyz IN A 172.28.149.203
reverse
vim /var/named/data/172.28.149.arpa $TTL 1D 149.28.172.in-addr.arpa. IN SOA dns.example.com. admin.example.com. ( 0 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum 149.28.172.in-addr.arpa. IN NS dns.example.com. 1 IN PTR dns.example.com. 1 IN PTR ftp.example.com. 1 IN PTR mail.example.com. 1 IN PTR mail2.example.com. 1 IN PTR mail3.example.com. 1 IN PTR www.example.com. 1 IN PTR samba.example.com. 203 PTR abc.example.com. PTR xyz.example.com.
Install HTTP
yum install httpd
Change setting
vim /etc/httpd/conf/httpd.conf
modify severname
Add the following information at the end
ServerName dns.example.com:80 NameVirtualHost 172.28.149.203 <VirtualHost abc.example.com> ServerAdmin admin@example.com DocumentRoot "/var/www/web3" ServerName abc.example.com DirectoryIndex index.html ErrorLog logs/web3/error_log CustomLog logs/web3/access_log common </VirtualHost> <VirtualHost xyz.example.com> ServerAdmin admin@example.com DocumentRoot "/var/www/web4" ServerName xyz.example.com DirectoryIndex index.html ErrorLog logs/web4/error_log CustomLog logs/web4/access_log combined </VirtualHost>
Network card settings
ifconfig ens33:3 172.28.149.203 netmask 255.255.255.0
create index
mkdir -p /var/www/web3 mkdir -p /var/www/web4 echo "hello,web3" > /var/www/web3/index.html echo "hello,web4" > /var/www/web4/index.html
create log
mkdir -p /etc/httpd/logs/web3 mkdir -p /etc/httpd/logs/web4 touch /etc/httpd/logs/web3/error_log touch /etc/httpd/logs/web3/access_log touch /etc/httpd/logs/web4/error_log touch /etc/httpd/logs/web4/access_log
test
enable dns
systemctl restart named
open http
systemctl restart httpd
Linux
yum install nscd -y systemctl restart nscd
Open a browser and visit abc.example.com and xyz.example.com
Windows
Clear cache in cmd
ipconfig/flushdns
Open a browser and visit abc.example.com and xyz.example.com
wget abc.example.com wget xyz.example.com
FTP
install mysql
yum install gcc gcc-c++ pam-devel yum install mysql-devel wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm rpm -ivh mysql-community-release-el7-5.noarch.rpm yum install mysql-community-server wget http://downloads.sourceforge.net/project/pam-mysql/pam-mysql/0.7RC1/pam_mysql-0.7RC1.tar.gz tar -zxf pam_mysql-0.7RC1.tar.gz -C /tmp/ cd /tmp/pam_mysql-0.7RC1/ ./configure --with-pam=/usr --with-mysql=/usr --with-pam-mods-dir=/usr/lib64/security make; make install
Create system users corresponding to virtual users
useradd -d /home/virtual -s /sbin/nologin virtual chmod o+r /home/virtual
Create databases and tables to store virtual users
systemctl restart mysqld mysql -u root -p
Note: The password here is empty by default, just press Enter to enter.
create database ftpdb; use ftpdb; create table ftpusers(name char(20),password char(48)); insert into ftpusers(name,password) values ('mary',password('mary')); grant select on ftpdb.ftpusers to virtual@localhost identified by '123456';
install vsftpd
yum install vsftpd yum install ftp
Modify vsftp main configuration file
vim /etc/vsftpd/vsftpd.conf
delete the last few sentences
pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES
pam_service_name=vsftpd.virtual guest_enable=YES guest_username=virtual user_config_dir=/etc/vsftpd/vsftpd_user_conf allow_writeable_chroot=YES
Create pam authentication file
vim /etc/pam.d/vsftpd.virtual auth required /usr/lib64/security/pam_mysql.so user=virtual passwd=123456 host=localhost db=ftpdb table=ftpusers usercolumn=name passwdcolumn=password crypt=2 account required /usr/lib64/security/pam_mysql.so user=virtual passwd=123456 host=localhost db=ftpdb table=ftpusers usercolumn=name passwdcolumn=password crypt=2
Create mary and modify properties
mkdir /home/mary
skipped by mary users
chown virtual.virtual /home/mary/ chmod 755 -R /home/mary/ mkdir -p /etc/vsftpd/vsftpd_user_conf cd /etc/vsftpd/vsftpd_user_conf vim mary local_root=/home/mary anon_other_write_enable=YES anon_upload_enable=YES write_enable=YES anon_mkdir_write_enable=YES anon_umask=022 download_enable=YES
enable log file
Find relevant information in the main configuration file /etc/vsftpd/vsftpd.conf to modify
vim /etc/vsftpd/vsftpd.conf
xferlog_std_format=NO
restart ftp
systemctl restart vsftpd
Test, account password is mary
Linux
ftp localhost
Windows
Open cmd/terminal
echo lbwnb>mary.txt ftp 172.28.149.1 mkdir upload cd /upload put mary.txt quit