Experiment of VSFTPD server based on virtual user under CentOS 5.x

Required Requirements:

Virtual users who are real, but cannot log in

FTP1 VFTP1

FTP2 VFTP2

VIP VVIP

VFTP1: can only download

VFTP2: can only upload

VVIP: That can upload and can download

Start the implementation step below:

Install the required software

Yum-y Install vsftpd DB4 db4-devel

First, create a user database

1. Create a user text file----> create three accounts

Vi/etc/vsftpd/ftpvuser.txt

Add three virtual accounts in it, one person user and password each line

Such as:

VFTP1---Users

VFTP1PW---vftp1 password

2. Build the database (to install the DB4 and Db4-devel packages beforehand)

Db_load-t-T Hash-f/etc/vsftpd/ftpvuser.txt/etc/vsftpd/vu.db

3. Modify database File access rights

chmod 600/etc/vsftpd/vu.db

Second, configure Pam file

Vi/etc/pam.d/vsftpd

The default configuration is all commented out or deleted, add two rows of corresponding configuration fields

Auth required/lib/security/pam_userdb.so Db=/etc/vsftpd/vu

Account Required/lib/security/pam_userdb.so Db=/etc/vsftpd/vu

PS: The above is 32-bit writing, the following is the 64-bit system:

Auth required/lib64/security/pam_userdb.so Db=/etc/vsftpd/vu

Account Required/lib64/security/pam_userdb.so Db=/etc/vsftpd/vu