EvilAdmin, Org - Vsftpd Virtual User Configuration

Vsftpd Configuration

Create file /etc/vsftpd.passwd with the following format:
```
USER
PASSWORD
USER2
PASSWORD2
[..etc..]
```
Create the DB3 database:
db_load -T -t hash -f /etc/vsftpd.passwd /etc/vsftpd.passwd.db
Secure the two files from prying eyes:
chmod 600 vsftpd.passwd*

Teach pam about our database by creating /etc/pam.d/ftp with the following:

auth required /lib/security/pam_userdb.so db=/etc/vsftpd.passwd
account required /lib/security/pam_userdb.so db=/etc/vsftpd.passwd

Create virtual user to run sessions as:
useradd -d /home/ftpsite vsftpd
Move the /etc/vsftpd.conf out of the way

Create a new /etc/vsftpd.conf with the following:

## Prep things to ensure that logging and virtual users are enabled. This is 
## linked with a set of fake PAM password entries
anon_world_readable_only=YES
download_enable=NO
anonymous_enable=NO
local_enable=YES
write_enable=YES
hide_ids=YES
anon_upload_enable=YES
anon_mkdir_write_enable=NO
anon_other_write_enable=NO
chroot_local_user=YES
guest_enable=YES
guest_username=vsftpd
xferlog_enable=YES
## Hiding files should work, but some suse versions doesn't support it.
hide_file={*,.*}

## This allows use to manage passive ftp better for firewall security.  Make 
## sure these ports are not filtered.
pasv_min_port=30000
pasv_max_port=50000

## This shouldn't be "root" for chown_username, but frankly I don't know what 
## user name to use at this point.
chown_uploads=YES
chown_username=root

## We should use local_root/user_sub_token, but some suse version doesn't 
## support it.  Thus we do "user_config_dir" with the following command to set 
## local_root per user: echo "local_root=/h/site/USER" > /etc/vfstpd-user/USER
#local_root=/home/ftpsite/$USER
#user_sub_token=$USER
user_config_dir=/etc/vsftpd-user/

Adding New Users

Add to /etc/vsftpd.passwd as per the first step above.
Rerun the db_load command per the second step above.
Make home directory:
mkdir /home/ftpsite/USER
Set vsftpd as owner:
chown vsftpd /home/ftpsite/USER
Set $HOME via vsftpd:
echo "local_root=/home/ftpsite/USER" > /etc/vsftpd-user/USER