1. vsftpd 설치
-
[ec2-user@ip-172-31-20-116 ~]$ sudo yum install vsftpd
Loaded plugins: priorities, update-motd, upgrade-helper
amzn-main | 2.1 kB 00:00:00
amzn-updates | 2.5 kB 00:00:00
Resolving Dependencies
--> Running transaction check
---> Package vsftpd.x86_64 0:2.2.2-13.13.amzn1 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
===========================================================================================================
Package Arch Version Repository Size
===========================================================================================================
Installing:
vsftpd x86_64 2.2.2-13.13.amzn1 amzn-main 161 k
Transaction Summary
===========================================================================================================
Install 1 Package
Total download size: 161 k
Installed size: 320 k
Is this ok [y/d/N]: y
Downloading packages:
vsftpd-2.2.2-13.13.amzn1.x86_64.rpm | 161 kB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : vsftpd-2.2.2-13.13.amzn1.x86_64 1/1
Verifying : vsftpd-2.2.2-13.13.amzn1.x86_64 1/1
Installed:
vsftpd.x86_64 0:2.2.2-13.13.amzn1
Complete!
[
2. VSFTP 환경설정
[ec2-user@ip-172-31-20-116 www]$ sudo vi /etc/vsftpd/vsftpd.conf
# The name of log file when xferlog_enable=YES and xferlog_std_format=YES
# WARNING - changing this filename affects /etc/logrotate.d/vsftpd.log
#xferlog_file=/var/log/xferlog
#
# Switches between logging into vsftpd_log_file and xferlog_file files.
# NO writes to vsftpd_log_file, YES to xferlog_file
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
#
# By default the server will pretend to allow ASCII mode but in fact ignore
# the request. Turn on the below options to have the server actually do ASCII
# mangling on files when in ASCII mode.
# Beware that on some FTP servers, ASCII support allows a denial of service
# attack (DoS) via the command "SIZE /big/file" in ASCII mode. vsftpd
# predicted this attack and has always been safe, reporting the size of the
# raw file.
# ASCII mangling is a horrible feature of the protocol.
#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 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_local_user=YES <-- home디렉토리를 FTP 접속루트로 잡고 계정도 리눅스꺼 공유해서 쓰겠다
#chroot_list_enable=YES
# (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
#
# When "listen" directive is enabled, vsftpd runs in standalone mode and
# listens on IPv4 sockets. This directive cannot be used in conjunction
# with the listen_ipv6 directive.
listen=YES
#
# This directive enables listening on IPv6 sockets. To listen on IPv4 and IPv6
# sockets, you must run two copies of vsftpd with two configuration files.
# Make sure, that one of the listen options is commented !!
#listen_ipv6=YES
pam_service_name=vsftpd
userlist_enable=YES <-- user_list 파일 사용
tcp_wrappers=YES
pasv_enable=YES <-- passive mode 사용
pasv_min_port=1024
pasv_max_port=1048
pasv_address=11.111.222.233 <-- Public IP (외부에서 치고 들어오는 IP)
3. 리눅스 사용자 계정 추가 및 홈 디렉토리 변경하여 FTP 접속 루트 디렉토리로 지정
[ec2-user@ip-172-31-20-116 donzbox]$ sudo adduser donzbox2
[ec2-user@ip-172-31-20-116 donzbox]$ sudo passwd donzbox2
choickey 사용자의 비밀 번호 변경 중
새 암호:
새 암호 재입력:
passwd: 모든 인증 토큰이 성공적으로 업데이트 되었습니다.
[ec2-user@ip-172-31-20-116 donzbox]$ sudo usermod -d /ftp_root donzbox2 <-- donzbox2님의 홈디렉토리 /home/donzbox2 를
/ftp_root 로 바꾸고 FTP 접속시 절루 가게함
[ec2-user@ip-172-31-20-116 donzbox]$ sudo chmod -R 755 /ftp_root <-- 쓰기권한 부여하지 않으면 FTP 접속은 되지만 파일업로드가 안됨
[ec2-user@ip-172-31-20-116 donzbox]$
4. VSFTPD 서버 재기동하여 위의 사항 적용
[ec2-user@ip-172-31-20-116 donzbox]$
[ec2-user@ip-172-31-20-116 donzbox]$ sudo service vsftpd restart
Shutting down vsftpd: [ OK ]
Starting vsftpd for vsftpd: [ OK ]
[ec2-user@ip-172-31-20-116 donzbox]$
5. 접속 테스트
조낸잘댐
6. 참고
이 목록에 없는 사용자만 FTP에 접근할 수 있게 하는 설정 (파일이름이 헷갈리네 @_@)
[ec2-user@ip-172-31-20-116 www]$
[ec2-user@ip-172-31-20-116 vsftpd]$ sudo vi /etc/vsftpd/user_list
# vsftpd userlist
# If userlist_deny=NO, only allow users in this file
# If userlist_deny=YES (default), never allow users in this file, and
# do not even prompt for a password.
# Note that the default vsftpd pam config also checks /etc/vsftpd/ftpusers
# for users that are denied.
root
bin
daemon
adm
lp
sync
shutdown
halt
news
uucp
operator
games
nobody
~
서버 재기동시 자동으로 vsftpd 가 시작되지 않게
sudo chkconfig --level 345 vsftpd on
vsftpd 제거 (환경설정 및 서비스도 날라감)
sudo yum remove vsftpd