安装freebsd4.9时请装上ports
1.安装mysql
2.安装pam_mysql-0.5
3.准备数据库vsftpd
4.安装vsftpd
5.修改vsftpd.conf及/etc/pam.conf
6.修改/etc/pam.conf

1.安装mysql
#mkdir /usr/local/mysql
#pw groupadd mysql
#pw useradd mysql -g mysql
#tar zxvf mysql-3.23.55.tar.gz
#cd mysql-3.23.55
#./configure --prefix=/usr/local/mysql
#make && make install
#cd scripts
#./mysql_install_db
#chown -R root /usr/local/mysql
#chown -R mysql /usr/local/mysql/var
#chgrp -R mysql /usr/local/mysql
#ee /etc/rc.local
添加/usr/local/mysql/bin/safe_mysqld --user=mysql &
起动mysql
#cd /usr/local/mysql/bin
#./safe_mysqld --user=mysql &

2.安装pam_mysql-0.5
先装gmake
#cd /usr/ports/devel/gmake
#make install
这里有个技巧，要装mysql-4.0.16的client
#cp /home/mysql-4.0.16.tar.gz /usr/ports/distfiles
#cp /home/pam_mysql-0.5.tar.gz /usr/ports/distfiles
#cd /usr/ports/security/pam-mysql
#make install
#cp /usr/local/lib/pam_mysql.so /usr/lib

3.准备数据库vsftpd
#cd /usr/local/mysql/bin
#./mysql -u root
>create database vsftpd ;
>use vsftpd ;
>create table users ( name char(16) binary ,passwd char(16) binary ) ;
>insert into users ( name,passwd) values (\'xiaotong\',password(\'qqmywife\');
>insert into users (name,passwd) values (\'xiaowang\',password(\'ttmywife\'));
>grant select on vsftpd.users to vsftpdguest@localhost identified by \'vsftpdguest\';
>quit ;

4.安装vsftpd
#cd /home
#pw useradd nobody
#mkdir /usr/share/empty/
#mkdir /var/ftp/
#pw useradd ftp -d /var/ftp
#chown root /var/ftp
#chgrp wheel /var/ftp
#tar zxvf vsftpd-1.2.0.tar.gz
#cd vsftpd-1.2.0
#make
#cp vsftpd /usr/local/sbin/vsftpd
#cp vsftpd.conf.5 /usr/local/man/man5
#cp vsftpd.8 /usr/local/man/man8
#cp vsftpd.conf /etc

5 修改vsftpd.conf
建立系统用户vsftpdguest
#mkdir /home/vsftpdguest
#pw useradd vsftpdguest -d /home/vsftpdguest
修改vsftpd.conf:
listen=YES
anonymos_enable=YES
guest_enable=YES
guest_username=vsftpdguest
pam_service_name=vsftpd
local_enable=YES
write_enable=YES
anon_upload_enable=YES
anon_mkdir_write_enable=YES
anon_other_write_enable=YES
chroot_local_user=YES

6.修改/etc/pam.conf
vsftpd auth required pam_mysql.so user=vsftpdguest passwd=vsftpdguest
host=localhost db=vsftpd table=users usercolumn=name passwdcolumn=passwd crypt=2

vsftpd account required pam_mysql.so user=vsftpdguest passwd=vsftpdguest
host=localhost db=vsftpd table=users usercolumn=name passwdcolumn=passwd crypt=2

最后在rc.local添加vsftpd
#ee rc.local
加上/usr/local/sbin/vsftpd &
保存退出
在系统下让虚拟用户和匿名用户对目录有写权限
#chmod a+w /var/ftp
#chmod a+w /home/vsftpdguest
#reboot