Ubuntu搭建vsftpd服务器-陌上烟雨遥

软件环境；ubuntu22，VMware15

本实验基于dns搭建好的ftp域名，使用客户端（Ubuntu）进行域名访问服务端服务器


root@huhy:~ ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com has address 192<span class="token punctuation">.</span>168<span class="token punctuation">.</span>200<span class="token punctuation">.</span>160 root@huhy:~ 
root@huhy:~ ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com has address 192<span class="token punctuation">.</span>168<span class="token punctuation">.</span>200<span class="token punctuation">.</span>160 root@huhy:~ 
root@huhy:~ ftp.hoyeong.com has address 192.168.200.160 root@huhy:~

服务端配置

安装ftp软件包


apt install <span class="token operator">-</span>y vsftpd 
apt install <span class="token operator">-</span>y vsftpd 
apt install -y vsftpd

备份配置文件好习惯


<span class="token function">cp</span> <span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>conf <span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>conf<span class="token punctuation">.</span>bak 
<span class="token function">cp</span> <span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>conf <span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>conf<span class="token punctuation">.</span>bak 
cp /etc/vsftpd.conf /etc/vsftpd.conf.bak

配置文件参数详解


 anonymous_enable=YES  anon_root=<span class="token operator">/</span><span class="token keyword">var</span><span class="token operator">/</span>ftp  no_anon_password=YES/NO（NO）  ftp_username=ftp  anon_umask=022  anon_upload_enable=YES  anon_world_readable_only=YES/NO（YES） anon_mkdir_write_enable=YES  anon_other_write_enable=YES  anon_max_rate=0   local_enable=YES  local_root=<span class="token operator">/</span>home/username  chroot_local_user=YES/NO（NO）  write_enable=YES/NO（YES） local_umask=022  file_open_mode=0755   dirmessage_enable=YES/NO（YES） message_file=<span class="token punctuation">.</span>message  banner_file=<span class="token operator">/</span>etc/vsftpd/banner  ftpd_banner=Welcome to BOB's FTP server   chroot_list_enable=YES/NO（NO）  chroot_list_file=<span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>chroot_list  chroot_local_user=YES/NO（NO）  userlist_file=<span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>user_list  userlist_enable=YES/NO（NO）  userlist_deny=YES/NO（YES）   listen=YES  listen_address=192<span class="token punctuation">.</span>168<span class="token punctuation">.</span>4<span class="token punctuation">.</span>1  listen_port=21  write_enable=YES  download_enable＝YES  userlist_enable=YES  userlist_deny=YES  max_clients=0  max_per_ip=0  
 anonymous_enable=YES  anon_root=<span class="token operator">/</span><span class="token keyword">var</span><span class="token operator">/</span>ftp  no_anon_password=YES/NO（NO）  ftp_username=ftp  anon_umask=022  anon_upload_enable=YES  anon_world_readable_only=YES/NO（YES） anon_mkdir_write_enable=YES  anon_other_write_enable=YES  anon_max_rate=0   local_enable=YES  local_root=<span class="token operator">/</span>home/username  chroot_local_user=YES/NO（NO）  write_enable=YES/NO（YES） local_umask=022  file_open_mode=0755   dirmessage_enable=YES/NO（YES） message_file=<span class="token punctuation">.</span>message  banner_file=<span class="token operator">/</span>etc/vsftpd/banner  ftpd_banner=Welcome to BOB's FTP server   chroot_list_enable=YES/NO（NO）  chroot_list_file=<span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>chroot_list  chroot_local_user=YES/NO（NO）  userlist_file=<span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>user_list  userlist_enable=YES/NO（NO）  userlist_deny=YES/NO（YES）   listen=YES  listen_address=192<span class="token punctuation">.</span>168<span class="token punctuation">.</span>4<span class="token punctuation">.</span>1  listen_port=21  write_enable=YES  download_enable＝YES  userlist_enable=YES  userlist_deny=YES  max_clients=0  max_per_ip=0  
 anonymous_enable=YES  anon_root=/var/ftp  no_anon_password=YES/NO（NO）  ftp_username=ftp  anon_umask=022  anon_upload_enable=YES  anon_world_readable_only=YES/NO（YES） anon_mkdir_write_enable=YES  anon_other_write_enable=YES  anon_max_rate=0   local_enable=YES  local_root=/home/username  chroot_local_user=YES/NO（NO）  write_enable=YES/NO（YES） local_umask=022  file_open_mode=0755   dirmessage_enable=YES/NO（YES） message_file=.message  banner_file=/etc/vsftpd/banner  ftpd_banner=Welcome to BOB's FTP server   chroot_list_enable=YES/NO（NO）  chroot_list_file=/etc/vsftpd.chroot_list  chroot_local_user=YES/NO（NO）  userlist_file=/etc/vsftpd.user_list  userlist_enable=YES/NO（NO）  userlist_deny=YES/NO（YES）   listen=YES  listen_address=192.168.4.1  listen_port=21  write_enable=YES  download_enable＝YES  userlist_enable=YES  userlist_deny=YES  max_clients=0  max_per_ip=0

修改配置文件


vim <span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>conf 
vim <span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>conf 
vim /etc/vsftpd.conf

重启服务生效


systemctl restart vsftpd 
systemctl restart vsftpd 
systemctl restart vsftpd

配置完后即可实现远程访问，上传下载文件

客户端测试

客户端配置dns的IP地址为域名解析


root@slave1:~  network: ethernets: ens33: dhcp4: no addresses: <span class="token punctuation">[</span>192<span class="token punctuation">.</span>168<span class="token punctuation">.</span>200<span class="token punctuation">.</span>101/24<span class="token punctuation">]</span> gateway4: 192<span class="token punctuation">.</span>168<span class="token punctuation">.</span>200<span class="token punctuation">.</span>2 nameservers: addresses: <span class="token punctuation">[</span>192<span class="token punctuation">.</span>168<span class="token punctuation">.</span>200<span class="token punctuation">.</span>160<span class="token punctuation">,</span>8<span class="token punctuation">.</span>8<span class="token punctuation">.</span>8<span class="token punctuation">.</span>8<span class="token punctuation">]</span> version: 2 root@slave1:~ ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com has address 192<span class="token punctuation">.</span>168<span class="token punctuation">.</span>200<span class="token punctuation">.</span>160 root@slave1:~ 
root@slave1:~  network: ethernets: ens33: dhcp4: no addresses: <span class="token punctuation">[</span>192<span class="token punctuation">.</span>168<span class="token punctuation">.</span>200<span class="token punctuation">.</span>101/24<span class="token punctuation">]</span> gateway4: 192<span class="token punctuation">.</span>168<span class="token punctuation">.</span>200<span class="token punctuation">.</span>2 nameservers: addresses: <span class="token punctuation">[</span>192<span class="token punctuation">.</span>168<span class="token punctuation">.</span>200<span class="token punctuation">.</span>160<span class="token punctuation">,</span>8<span class="token punctuation">.</span>8<span class="token punctuation">.</span>8<span class="token punctuation">.</span>8<span class="token punctuation">]</span> version: 2 root@slave1:~ ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com has address 192<span class="token punctuation">.</span>168<span class="token punctuation">.</span>200<span class="token punctuation">.</span>160 root@slave1:~ 
root@slave1:~  network: ethernets: ens33: dhcp4: no addresses: [192.168.200.101/24] gateway4: 192.168.200.2 nameservers: addresses: [192.168.200.160,8.8.8.8] version: 2 root@slave1:~ ftp.hoyeong.com has address 192.168.200.160 root@slave1:~

服务端/opt/下提前创建hoyeong.txt下载测试文档


root@huhy:<span class="token operator">/</span>opt hoyeong<span class="token punctuation">.</span>txt root@huhy:<span class="token operator">/</span>opt 
root@huhy:<span class="token operator">/</span>opt hoyeong<span class="token punctuation">.</span>txt root@huhy:<span class="token operator">/</span>opt 
root@huhy:/opt hoyeong.txt root@huhy:/opt

客户端/opt/下创建hwiung.txt上传测试文档


root@slave1:~ root@slave1:~ total 8 drwxr-xr-x 2 root root 4096 Nov 29 08:27 <span class="token punctuation">.</span><span class="token operator">/</span> drwxr-xr-x 19 root root 4096 Aug 29 14:42 <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token operator">/</span> <span class="token operator">-</span>rw-r-<span class="token operator">-</span>r-<span class="token operator">-</span> 1 root root 0 Nov 29 08:27 hwiung<span class="token punctuation">.</span>txt root@slave1:~ 
root@slave1:~ root@slave1:~ total 8 drwxr-xr-x 2 root root 4096 Nov 29 08:27 <span class="token punctuation">.</span><span class="token operator">/</span> drwxr-xr-x 19 root root 4096 Aug 29 14:42 <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token operator">/</span> <span class="token operator">-</span>rw-r-<span class="token operator">-</span>r-<span class="token operator">-</span> 1 root root 0 Nov 29 08:27 hwiung<span class="token punctuation">.</span>txt root@slave1:~ 
root@slave1:~ root@slave1:~ total 8 drwxr-xr-x 2 root root 4096 Nov 29 08:27 ./ drwxr-xr-x 19 root root 4096 Aug 29 14:42 ../ -rw-r--r-- 1 root root 0 Nov 29 08:27 hwiung.txt root@slave1:~

测试访问，客户端使用 ftp+地址的格式访问，由于配置了域名所以使用ftp+域名访问
注：客户端进入ftp服务器时会以当前目录作为起始目录，也就是说你在客户端/opt/下使用ftp访问服务端时使用上传文件就会以当前目录作为起始，访问时会以服务端的用户来进行访问，我的服务端只有一个huhy用户


 ftp ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com  Name <span class="token punctuation">(</span>ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com:root<span class="token punctuation">)</span>:huhy 密码  230 Login successful<span class="token punctuation">.</span> Remote system <span class="token function">type</span> is UNIX<span class="token punctuation">.</span> <span class="token keyword">Using</span> binary mode to transfer files<span class="token punctuation">.</span> ftp>  ftp> cd <span class="token operator">/</span>opt/ 250 Directory successfully changed<span class="token punctuation">.</span> ftp> <span class="token function">ls</span> 229 Entering Extended Passive Mode <span class="token punctuation">(</span><span class="token punctuation">|</span><span class="token punctuation">|</span><span class="token punctuation">|</span>42970<span class="token punctuation">|</span><span class="token punctuation">)</span> 150 Here comes the directory listing<span class="token punctuation">.</span> <span class="token operator">-</span>rw-r-<span class="token operator">-</span>r-<span class="token operator">-</span> 1 0 0 0 Nov 29 08:25 hoyeong<span class="token punctuation">.</span>txt 226 Directory send OK<span class="token punctuation">.</span> ftp> get hoyeong<span class="token punctuation">.</span>txt local: hoyeong<span class="token punctuation">.</span>txt remote: hoyeong<span class="token punctuation">.</span>txt 229 Entering Extended Passive Mode <span class="token punctuation">(</span><span class="token punctuation">|</span><span class="token punctuation">|</span><span class="token punctuation">|</span>34340<span class="token punctuation">|</span><span class="token punctuation">)</span> 150 Opening BINARY mode <span class="token keyword">data</span> connection <span class="token keyword">for</span> hoyeong<span class="token punctuation">.</span>txt <span class="token punctuation">(</span>0 bytes<span class="token punctuation">)</span><span class="token punctuation">.</span> 0 0<span class="token punctuation">.</span>00 KiB/s 226 Transfer complete<span class="token punctuation">.</span> ftp>  ftp> cd <span class="token operator">/</span>home/huhy 250 Directory successfully changed<span class="token punctuation">.</span> ftp> put hwiung<span class="token punctuation">.</span>txt local: hwiung<span class="token punctuation">.</span>txt remote: hwiung<span class="token punctuation">.</span>txt 229 Entering Extended Passive Mode <span class="token punctuation">(</span><span class="token punctuation">|</span><span class="token punctuation">|</span><span class="token punctuation">|</span>26556<span class="token punctuation">|</span><span class="token punctuation">)</span> 150 Ok to send <span class="token keyword">data</span><span class="token punctuation">.</span> 0 0<span class="token punctuation">.</span>00 KiB/s 226 Transfer complete<span class="token punctuation">.</span> ftp>  ftp> <span class="token keyword">exit</span> 221 Goodbye<span class="token punctuation">.</span> 
 ftp ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com  Name <span class="token punctuation">(</span>ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com:root<span class="token punctuation">)</span>:huhy 密码  230 Login successful<span class="token punctuation">.</span> Remote system <span class="token function">type</span> is UNIX<span class="token punctuation">.</span> <span class="token keyword">Using</span> binary mode to transfer files<span class="token punctuation">.</span> ftp>  ftp> cd <span class="token operator">/</span>opt/ 250 Directory successfully changed<span class="token punctuation">.</span> ftp> <span class="token function">ls</span> 229 Entering Extended Passive Mode <span class="token punctuation">(</span><span class="token punctuation">|</span><span class="token punctuation">|</span><span class="token punctuation">|</span>42970<span class="token punctuation">|</span><span class="token punctuation">)</span> 150 Here comes the directory listing<span class="token punctuation">.</span> <span class="token operator">-</span>rw-r-<span class="token operator">-</span>r-<span class="token operator">-</span> 1 0 0 0 Nov 29 08:25 hoyeong<span class="token punctuation">.</span>txt 226 Directory send OK<span class="token punctuation">.</span> ftp> get hoyeong<span class="token punctuation">.</span>txt local: hoyeong<span class="token punctuation">.</span>txt remote: hoyeong<span class="token punctuation">.</span>txt 229 Entering Extended Passive Mode <span class="token punctuation">(</span><span class="token punctuation">|</span><span class="token punctuation">|</span><span class="token punctuation">|</span>34340<span class="token punctuation">|</span><span class="token punctuation">)</span> 150 Opening BINARY mode <span class="token keyword">data</span> connection <span class="token keyword">for</span> hoyeong<span class="token punctuation">.</span>txt <span class="token punctuation">(</span>0 bytes<span class="token punctuation">)</span><span class="token punctuation">.</span> 0 0<span class="token punctuation">.</span>00 KiB/s 226 Transfer complete<span class="token punctuation">.</span> ftp>  ftp> cd <span class="token operator">/</span>home/huhy 250 Directory successfully changed<span class="token punctuation">.</span> ftp> put hwiung<span class="token punctuation">.</span>txt local: hwiung<span class="token punctuation">.</span>txt remote: hwiung<span class="token punctuation">.</span>txt 229 Entering Extended Passive Mode <span class="token punctuation">(</span><span class="token punctuation">|</span><span class="token punctuation">|</span><span class="token punctuation">|</span>26556<span class="token punctuation">|</span><span class="token punctuation">)</span> 150 Ok to send <span class="token keyword">data</span><span class="token punctuation">.</span> 0 0<span class="token punctuation">.</span>00 KiB/s 226 Transfer complete<span class="token punctuation">.</span> ftp>  ftp> <span class="token keyword">exit</span> 221 Goodbye<span class="token punctuation">.</span> 
 ftp ftp.hoyeong.com  Name (ftp.hoyeong.com:root):huhy 密码  230 Login successful. Remote system type is UNIX. Using binary mode to transfer files. ftp>  ftp> cd /opt/ 250 Directory successfully changed. ftp> ls 229 Entering Extended Passive Mode (|||42970|) 150 Here comes the directory listing. -rw-r--r-- 1 0 0 0 Nov 29 08:25 hoyeong.txt 226 Directory send OK. ftp> get hoyeong.txt local: hoyeong.txt remote: hoyeong.txt 229 Entering Extended Passive Mode (|||34340|) 150 Opening BINARY mode data connection for hoyeong.txt (0 bytes). 0 0.00 KiB/s 226 Transfer complete. ftp>  ftp> cd /home/huhy 250 Directory successfully changed. ftp> put hwiung.txt local: hwiung.txt remote: hwiung.txt 229 Entering Extended Passive Mode (|||26556|) 150 Ok to send data. 0 0.00 KiB/s 226 Transfer complete. ftp>  ftp> exit 221 Goodbye.

验证上传的文件


ftp> <span class="token keyword">exit</span> 221 Goodbye<span class="token punctuation">.</span> 
ftp> <span class="token keyword">exit</span> 221 Goodbye<span class="token punctuation">.</span> 
ftp> exit 221 Goodbye.

验证下载的文件


root@slave1:<span class="token operator">/</span>opt hoyeong<span class="token punctuation">.</span>txt hwiung<span class="token punctuation">.</span>txt root@slave1:<span class="token operator">/</span>opt 
root@slave1:<span class="token operator">/</span>opt hoyeong<span class="token punctuation">.</span>txt hwiung<span class="token punctuation">.</span>txt root@slave1:<span class="token operator">/</span>opt 
root@slave1:/opt hoyeong.txt hwiung.txt root@slave1:/opt

如上测试，客户端可以自由访问etc、boot等目录，不安全，如下我们配置指定用户可以访问，且不能自由切换访问的目录

服务端下创建测试用户


root@huhy:~ root@huhy:~ root@huhy:~ New password: Retype new password: passwd: password updated successfully root@huhy:~ New password: Retype new password: passwd: password updated successfully root@huhy:~ 
root@huhy:~ root@huhy:~ root@huhy:~ New password: Retype new password: passwd: password updated successfully root@huhy:~ New password: Retype new password: passwd: password updated successfully root@huhy:~ 
root@huhy:~ root@huhy:~ root@huhy:~ New password: Retype new password: passwd: password updated successfully root@huhy:~ New password: Retype new password: passwd: password updated successfully root@huhy:~

修改配置文件


vim <span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>conf 
vim <span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>conf 
vim /etc/vsftpd.conf


userlist_file=<span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>user_list userlist_enable=YES  userlist_deny=NO 
userlist_file=<span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>user_list userlist_enable=YES  userlist_deny=NO 
userlist_file=/etc/vsftpd.user_list userlist_enable=YES  userlist_deny=NO


root@huhy:~ ftpuser1 ftpuser2 
root@huhy:~ ftpuser1 ftpuser2 
root@huhy:~ ftpuser1 ftpuser2

重启生效


systemctl restart vsftpd 
systemctl restart vsftpd 
systemctl restart vsftpd

则只能被该/etc/vsftpd.user_list文件里面的用户访问，huhy用户拒绝访问


root@slave1:<span class="token operator">/</span>opt Connected to ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com<span class="token punctuation">.</span> 220 <span class="token punctuation">(</span>vsFTPd 3<span class="token punctuation">.</span>0<span class="token punctuation">.</span>5<span class="token punctuation">)</span> Name <span class="token punctuation">(</span>ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com:root<span class="token punctuation">)</span>: huhy 530 Permission denied<span class="token punctuation">.</span> ftp: Login failed ftp> user ftpuser1 331 Please specify the password<span class="token punctuation">.</span> Password: 230 Login successful<span class="token punctuation">.</span> Remote system <span class="token function">type</span> is UNIX<span class="token punctuation">.</span> <span class="token keyword">Using</span> binary mode to transfer files<span class="token punctuation">.</span> ftp> 
root@slave1:<span class="token operator">/</span>opt Connected to ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com<span class="token punctuation">.</span> 220 <span class="token punctuation">(</span>vsFTPd 3<span class="token punctuation">.</span>0<span class="token punctuation">.</span>5<span class="token punctuation">)</span> Name <span class="token punctuation">(</span>ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com:root<span class="token punctuation">)</span>: huhy 530 Permission denied<span class="token punctuation">.</span> ftp: Login failed ftp> user ftpuser1 331 Please specify the password<span class="token punctuation">.</span> Password: 230 Login successful<span class="token punctuation">.</span> Remote system <span class="token function">type</span> is UNIX<span class="token punctuation">.</span> <span class="token keyword">Using</span> binary mode to transfer files<span class="token punctuation">.</span> ftp> 
root@slave1:/opt Connected to ftp.hoyeong.com. 220 (vsFTPd 3.0.5) Name (ftp.hoyeong.com:root): huhy 530 Permission denied. ftp: Login failed ftp> user ftpuser1 331 Please specify the password. Password: 230 Login successful. Remote system type is UNIX. Using binary mode to transfer files. ftp>

修改配置文件


vim <span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>conf 
vim <span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>conf 
vim /etc/vsftpd.conf


chroot_local_user=YES chroot_list_enable=YES chroot_list_file=<span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>chroot_list allow_writeable_chroot=YES 
chroot_local_user=YES chroot_list_enable=YES chroot_list_file=<span class="token operator">/</span>etc/vsftpd<span class="token punctuation">.</span>chroot_list allow_writeable_chroot=YES 
chroot_local_user=YES chroot_list_enable=YES chroot_list_file=/etc/vsftpd.chroot_list allow_writeable_chroot=YES


root@huhy:~ ftpuser1 
root@huhy:~ ftpuser1 
root@huhy:~ ftpuser1

重启生效


systemctl restart vsftpd 
systemctl restart vsftpd 
systemctl restart vsftpd

ftpuser1用户可以自由切换目录


root@slave1:<span class="token operator">/</span>opt Connected to ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com<span class="token punctuation">.</span> 220 <span class="token punctuation">(</span>vsFTPd 3<span class="token punctuation">.</span>0<span class="token punctuation">.</span>5<span class="token punctuation">)</span> Name <span class="token punctuation">(</span>ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com:root<span class="token punctuation">)</span>: ftpuser1 331 Please specify the password<span class="token punctuation">.</span> Password: 230 Login successful<span class="token punctuation">.</span> Remote system <span class="token function">type</span> is UNIX<span class="token punctuation">.</span> <span class="token keyword">Using</span> binary mode to transfer files<span class="token punctuation">.</span> ftp> cd <span class="token operator">/</span>opt 250 Directory successfully changed<span class="token punctuation">.</span> ftp> 
root@slave1:<span class="token operator">/</span>opt Connected to ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com<span class="token punctuation">.</span> 220 <span class="token punctuation">(</span>vsFTPd 3<span class="token punctuation">.</span>0<span class="token punctuation">.</span>5<span class="token punctuation">)</span> Name <span class="token punctuation">(</span>ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com:root<span class="token punctuation">)</span>: ftpuser1 331 Please specify the password<span class="token punctuation">.</span> Password: 230 Login successful<span class="token punctuation">.</span> Remote system <span class="token function">type</span> is UNIX<span class="token punctuation">.</span> <span class="token keyword">Using</span> binary mode to transfer files<span class="token punctuation">.</span> ftp> cd <span class="token operator">/</span>opt 250 Directory successfully changed<span class="token punctuation">.</span> ftp> 
root@slave1:/opt Connected to ftp.hoyeong.com. 220 (vsFTPd 3.0.5) Name (ftp.hoyeong.com:root): ftpuser1 331 Please specify the password. Password: 230 Login successful. Remote system type is UNIX. Using binary mode to transfer files. ftp> cd /opt 250 Directory successfully changed. ftp>

ftpuser2用户不能自由切换目录


root@slave1:<span class="token operator">/</span>opt Connected to ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com<span class="token punctuation">.</span> 220 <span class="token punctuation">(</span>vsFTPd 3<span class="token punctuation">.</span>0<span class="token punctuation">.</span>5<span class="token punctuation">)</span> Name <span class="token punctuation">(</span>ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com:root<span class="token punctuation">)</span>: ftpuser2 331 Please specify the password<span class="token punctuation">.</span> Password: 230 Login successful<span class="token punctuation">.</span> Remote system <span class="token function">type</span> is UNIX<span class="token punctuation">.</span> <span class="token keyword">Using</span> binary mode to transfer files<span class="token punctuation">.</span> ftp> cd <span class="token operator">/</span>opt 550 Failed to change directory<span class="token punctuation">.</span> ftp> 
root@slave1:<span class="token operator">/</span>opt Connected to ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com<span class="token punctuation">.</span> 220 <span class="token punctuation">(</span>vsFTPd 3<span class="token punctuation">.</span>0<span class="token punctuation">.</span>5<span class="token punctuation">)</span> Name <span class="token punctuation">(</span>ftp<span class="token punctuation">.</span>hoyeong<span class="token punctuation">.</span>com:root<span class="token punctuation">)</span>: ftpuser2 331 Please specify the password<span class="token punctuation">.</span> Password: 230 Login successful<span class="token punctuation">.</span> Remote system <span class="token function">type</span> is UNIX<span class="token punctuation">.</span> <span class="token keyword">Using</span> binary mode to transfer files<span class="token punctuation">.</span> ftp> cd <span class="token operator">/</span>opt 550 Failed to change directory<span class="token punctuation">.</span> ftp> 
root@slave1:/opt Connected to ftp.hoyeong.com. 220 (vsFTPd 3.0.5) Name (ftp.hoyeong.com:root): ftpuser2 331 Please specify the password. Password: 230 Login successful. Remote system type is UNIX. Using binary mode to transfer files. ftp> cd /opt 550 Failed to change directory. ftp>