Use pam_pwdfile.so in FC4 to create a virtual user

In FC4, pam_pwdfile.so is used to create a virtual user-Linux Enterprise Application-Linux server application information. The following is a detailed description. We 've been working on virtual users over the past few days. Now we have done a good job.
Here we will share the solution steps with you:
First everyone here to download pam_pwdfile-0.99 (installed friends can skip this step)
Http://cpbotha.net/pam_pwdfile.html

Install pam_pwdfile (very simple, I think: P)
1)
Download pam_pwdfile, and then do the following


# Wget http://www.us.kernel.org/pub/lin... ux-PAM-0.75.tar.bz2
# Bunzip2-c Linux-PAM-0.75.tar.bz2 | tar-xvf-
# Cd Linux-PAM-0.75/modules
# Tar-xzvf/you save the path/pam_pwdfile-0.99.tar.gz of pam_pwdfile-0.99.tar.gz (unzip it under modules, don't put it elsewhere .....)
# Cd ..
# Rm default. defs)
# Ln-s defs/redhat. defs default. defs)


Do this in Linux-PAM-0.75/(coming soon ......)
# Make

Make this step succeeded (don't look for me if not) will find a file named pam_pwdfile.so in the Linux-PAM-0.75/modules/pam_pwdfile-0.99,
Haha, all I need is it. Copy it to/lib/security/(this is important .....)

2) After the preparation is complete, configure virtual user

2-1) vsftpd. conf configuration

Anonymous_enable = NO
Local_enable = YES
Write_enable = NO
Local_umask = 022
Dirmessage_enable = YES
Xferlog_enable = YES
Xferlog_file =/var/log/vsftpd. log
Xferlog_std_format = YES
Pam_service_name = vsftpd
Connect_from_port_20 = YES
Ftpd_banner = Welcome to S _ FTP server.
Listen = YES
Listen_port= 2121
One_process_model = NO
Chroot_local_user = YES
Guest_enable = YES
Guest_username = virtualus


2-2) Modify/etc/pam. d/vsftpd (comment out the original one !!)

Auth required pam_pwdfile.so pwdfile/etc/vsftpd/passwd_ftp
Account required pam_permit.so


2-3) create a script for MD5 encryption of the virtual user password/etc/vsftpd/filter. pl and enter the following content in it:

#! /Usr/bin/perl-w
Use strict;

# Filter "user: cleartext" lines into "user: md5_crypted"
# Probably requires glibc

While (<> ){
Chomp;
(My $ user, my $ pass) = split/:/, $ _, 2;
My $ crypt = crypt $ pass, '$1 $'. gensalt (8 );
Print "$ user: $ cryptn ";
}

Sub gensalt {
My $ count = shift;
My @ salt = ('.', '/', 0 .. 9, 'A'... 'Z', 'A'... 'Z ');
My $ s;
$ S. = $ salt [rand @ salt] for (1 .. $ count );
Return $ s;
}


2-4) modify the filter. pl attribute
# Chmod + x/etc/vsftpd/filter. pl

2-5) Create a New us.txt file that creates a virtual user as follows:
Qq: 123 (pp is a virtual user and 123 is his password)
Pp: 456

2-6) write the virtual user information to passwd_ftp (after this step, you can delete us.txt. For security, do not contact me if you forget your password: em11 :)

# Perl/etc/vsftpd/filter. pl./us.txt>/etc/vsftpd/passwd_ftp


3) Restart vsftpd
# Service vsftpd restart

4) You can skip step 4 ..........