Net25-第13周作业

1、建立samba共享，共享目录为/data，要求：（描述完整的过程）

• 1)共享名为shared，工作组为magedu；
• 2)添加组develop，添加用户gentoo,centos和ubuntu，其中gentoo和centos以develop为附加组，ubuntu不属于develop组；密码均为用户名；
• 3)添加samba用户gentoo,centos和ubuntu，密码均为“mageedu”；
• 4)此samba共享shared仅允许develop组具有写权限，其他用户只能以只读方式访问；
• 5)此samba共享服务仅允许来自于172.16.0.0/16网络的主机访问；

~]#yum install -y samba samba-client
~]#mkdir /data
~]#groupadd develop
~]#useradd -G develop gentoo -p gentoo
~]#useradd -G develop centos -p centos
~]#useradd ubuntu -p ubuntu
~]#smbpasswd -a gentoo
New SMB password:
Retype new SMB password:
Added user gentoo.
~]#smbpasswd -a centos
New SMB password:
Retype new SMB password:
Added user centos.
~]#smbpasswd -a ubuntu
New SMB password:
Retype new SMB password:
Added user ubuntu.
~]#chgrp develop /data
~]#chmod g+w /data
~]#cat /etc/samba/smb.conf
[global]
workgroup=magedu
[shared]
comment = data
path=/data
browseable = no
write list=@develop
hosts allow=172.16.0.0/16
~]#systemctl start nmb
~]#systemctl start smb

测试

~]#smbclient //10.211.55.35/shared -U gentoo
Enter gentoo's password: 
Domain=[MYGROUP] OS=[Unix] Server=[Samba 3.6.23-36.el6_8]
smb: \> ls
  .                                   D        0  Mon Feb 20 01:47:42 2017
  ..                                 DR        0  Thu Mar 23 23:43:54 2017
  my                                  D        0  Mon Feb 20 00:49:55 2017
  hosts                               N      160  Tue Feb 14 16:46:32 2017

                51475068 blocks of size 1024. 42181944 blocks available
smb: \> lcd /etc/
smb: \> put hosts.deny
putting file hosts.deny as \hosts.deny (149.7 kb/s) (average 149.7 kb/s)


~]#smbclient //10.211.55.35/shared -U ubuntu
Enter ubuntu's password: 
Domain=[MYGROUP] OS=[Unix] Server=[Samba 3.6.23-36.el6_8]
smb: \> ls
  .                                   D        0  Fri Mar 24 05:55:26 2017
  ..                                 DR        0  Thu Mar 23 23:43:54 2017
  my                                  D        0  Mon Feb 20 00:49:55 2017
  hosts                               N      160  Tue Feb 14 16:46:32 2017
  hosts.deny                          A      460  Fri Mar 24 05:55:26 2017

                51475068 blocks of size 1024. 42181932 blocks available
smb: \> lcd /etc
smb: \> put hosts.allow
NT_STATUS_ACCESS_DENIED opening remote file \hosts.allow
smb: \> get hosts.deny
getting file \hosts.deny of size 460 as hosts.deny (224.6 KiloBytes/sec) (average 224.6 KiloBytes/sec)

2、搭建一套文件vsftp文件共享服务，共享目录为/ftproot,要求：（描述完整的过程）

• 1)基于虚拟用户的访问形式；
• 2)匿名用户只允许下载，不允许上传；
• 3)禁锢所有的用户于其家目录当中；
• 4)限制最大并发连接数为200:；
• 5)匿名用户的最大传输速率512KB/s
• 6)虚拟用户的账号存储在mysql数据库当中。
• 7)数据库通过NFS进行共享。

先做nfs
~]#yum install -y nfs-utils rpcbind
~]#systemctl start rpcbind
~]#systemctl start nfs.service
~]#mkdir /mysqldata
~]#groupmod -g 3306 mysql
~]#usermod -u 3306 mysql
~]#chown -R mysql.mysql /mysqldata
~]#cat /etc/exports
/mysqldata 10.211.55.35(rw,sync)
~]#exportfs -r

nfs挂载并启动mariadb
~]# showmount -e 10.211.55.24
Export list for 10.211.55.24:
/mysqldata 10.211.55.35
~]#mount -t nfs 10.211.55.24:/mysqldata /mysqldata
~]#groupmod -g 3306 mysql
~]#usermod -u 3306 mysql
~]#su - mysql
~]#cd /usr/local/mariadb/scripts
~]#./mysql_install_db --basedir=/usr/local/mariadb --datadir=/mysqldata --user mysql
~]#cp ../support_files/my-huge.cnf /etc/my.cnf
~]#cat /etc/my.cnf
[mysqld]
datadir=/mysqldata
~]#cp ../support_files/mysql.server /etc/init.d/mysqld
~]#service mysqld start

配置vsftpd虚用户访问
~]#yum install -y vsftpd
~]#mysql
MariaDB [vsftpd]> desc users;
+--------+----------+------+-----+---------+----------------+
| Field  | Type     | Null | Key | Default | Extra          |
+--------+----------+------+-----+---------+----------------+
| id     | int(11)  | NO   | PRI | NULL    | auto_increment |
| name   | char(30) | NO   |     | NULL    |                |
| passwd | char(48) | NO   |     | NULL    |                |
+--------+----------+------+-----+---------+----------------+
3 rows in set (0.00 sec)
MariaDB [vsftpd]> insert into users (name,passwd) values ('jusene',password('jusene'));
Query OK, 1 row affected (0.02 sec)
MariaDB [vsftpd]> insert into users (name,passwd) values ('tom',password('tom'));      
Query OK, 1 row affected (0.00 sec)
MariaDB [vsftpd]> select * from users;
+----+--------+-------------------------------------------+
| id | name   | passwd                                    |
+----+--------+-------------------------------------------+
|  1 | jusene | *F4FC8B2A0A53CB6EB68F6F87B760AE616E8E2A78 |
|  2 | tom    | *71FF744436C7EA1B954F6276121DB5D2BF68FC07 |
+----+--------+-------------------------------------------+
2 rows in set (0.00 sec)
~]#cd pam_mysql
~]#./configure --with-mysql=/usr/local/mysql --with-openssl --with-pam=/usr --with-pam-mods-dir=/lib64/security
~]#make && make install
~]#cd /lib64/security/
~]#ll pam_mysql.so
~]#cat /etc/pam.d/vsftpd.mysql
auth      required pam_mysql.so user=vsftpd passwd=vsftpd host=localhost db=vsftpd table=users usercolumn=name passwdcolumn=passwd crypt=2
account   required pam_mysql.so user=vsftpd passwd=vsftpd host=localhost db=vsftpd table=users usercolumn=name passwdcolumn=passwd crypt=2
~]# useradd -s /sbin/nologin -d /ftpdata vuser
~]# cat /etc/vsftpd/vsftpd.conf
anonymous_enable=YES
anon_upload_enable=NO
max_clients=200
anon_max_rate=512K
chroot_local_user=YES