install vsftpd in freebsd

[golfreeze]

#freeBSD
การติดตั้ง vsftpd บน FreeBSD

พิมพ์บน command ตามลำดับดังนี้นะครับ

#pw groupadd -g 75 -n ftp
#pw useradd -u 75 -g ftp -c “FTP Service” -d /home/ftp -m -s /sbin/nologin -n
ftp
#cd /usr/ports/ftp/vsftpd
#make install clean
#cd /home
#chown root:wheel ftp
#chmod og-w ftp
#vi /usr/local/etc/vsftpd.chroot_list แล้วเพิ่มชื่อ user ที่ต้องการทำ chroot

จากนั้นแก้ไขไฟล์ /usr/local/etc/vsftpd.conf ดังนี้

anonymous_enable=YES
local_enable=YES
write_enable=YES
chroot_list_enable=YES
chroot_list_file=/usr/local/etc/vsftpd.chroot_list
secure_chroot_dir=/home/ftp

แก้ไขไฟล์ /etc/inetd.conf ดังนี้
ftp stream tcp nowait root /usr/local/libexec/vsftpd vsftpd

แล้วพิมพ์ที่ command shell ดังนี้
#killall inetd
#inetd –Ww
ก็เป็นอันเสร็จเรียบร้อยแล้วครับสำหรับ vsftpd
#ที่มา : www.thaibsd.com

[golfreeze]

#####ใน Debian ลง vsftpd ได้ดังนี้ golfreeze step ######

#apt-get install vsftpd
#vi /etc/vsftpd.conf

##### Config for use ftp for each account non annoynemous#######
listen=YES
#listen_ipv6=YES
#
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
anonymous_enable=NO
#
# Uncomment this to allow local users to log in.
local_enable=YES
#
# Uncomment this to enable any form of FTP write command.
write_enable=YES
#
# Default umask for local users is 077. You may wish to change this to 022,
# if your users expect that (022 is used by most other ftpd's)
#local_umask=022
#
# Uncomment this to allow the anonymous FTP user to upload files. This only
# has an effect if the above global write enable is activated. Also, you will
# obviously need to create a directory writable by the FTP user.
#anon_upload_enable=YES
#anon_mkdir_write_enable=YES
#
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
dirmessage_enable=YES
#
# Activate logging of uploads/downloads.
xferlog_enable=YES
#
# Make sure PORT transfer connections originate from port 20 (ftp-data).
connect_from_port_20=YES
#
# If you want, you can arrange for uploaded anonymous files to be owned by
# a different user. Note! Using "root" for uploaded files is not
# recommended!
#chown_uploads=YES
#chown_username=whoever
#
# You may override where the log file goes if you like. The default is shown
# below.
#xferlog_file=/var/log/vsftpd.log
#xferlog_std_format=YES
#
# You may change the default value for timing out an idle session.
#idle_session_timeout=600
#
# You may change the default value for timing out a data connection.
#data_connection_timeout=120
#
# It is recommended that you define on your system a unique user which the
# ftp server can use as a totally isolated and unprivileged user.
#nopriv_user=ftpsecure
#
# Enable this and the server will recognise asynchronous ABOR requests. Not
# recommended for security (the code is non-trivial). Not enabling it,
# however, may confuse older FTP clients.
#async_abor_enable=YES
#ascii_upload_enable=YES
#ascii_download_enable=YES
#
# You may fully customise the login banner string:
#ftpd_banner=Welcome to blah FTP service.
#
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
#deny_email_enable=YES
# (default follows)
#banned_email_file=/etc/vsftpd.banned_emails
#
# You may restrict local users to their home directories. See the FAQ for
# the possible risks in this before using chroot_local_user or
# chroot_list_enable below.
chroot_local_user=YES
#
# You may specify an explicit list of local users to chroot() to their home
# directory. If chroot_local_user is YES, then this list becomes a list of
# users to NOT chroot().
chroot_list_enable=NO
# (default follows)
chroot_list_file=/etc/vsftpd.chroot_list
#
# You may activate the "-R" option to the builtin ls. This is disabled by
# default to avoid remote users being able to cause excessive I/O on large
# sites. However, some broken FTP clients such as "ncftp" and "mirror"
assume
# the presence of the "-R" option, so there is a strong case for enabling it.
#ls_recurse_enable=YES
#
#
# Debian customization
#
# Some of vsftpd's settings don't fit the Debian filesystem layout by
# default. These settings are more Debian-friendly.
#
# This option should be the name of a directory which is empty. Also, the
# directory should not be writable by the ftp user. This directory is used
# as a secure chroot() jail at times vsftpd does not require filesystem
# access.
secure_chroot_dir=/var/run/vsftpd
#
# This string is the name of the PAM service vsftpd will use.
pam_service_name=vsftpd
rsa_cert_file=/etc/ssl/certs/vsftpd.pem

[golfreeze]

ปกติ ถ้าเราเรียกใช้ config default ของ vsftpd.conf

ถ้าเรา login เข้า ftp ของ user นั้นๆ แล้ว มันจะมองเห็นไฟล์ของ user ในห้องนั้นทั้งหมด

แต่ถ้า บาง user ดันเข้ามาก่อกวนแล้ว กด up higher level เพื่อออกไปดู folder ที่อยู่ใน path อื่นๆ
เช่นเข้าไป path "/" , "/var" บ้าง
เราก็แก้ไข โดย ใช้ตัว chroot เข้ามาช่วยครับ

#vi /etc/vsftpd.conf

chroot_list_enable=YES
chroot_list_file=/etc/vsftpd.chroot_list

แล้วเพิ่ม user ftp ตัวนั้นเข้า ใน /etc/vsftpd.chroot_list

แล้ว restart ftp 1 รอบก็เรียบร้อยครับผม