公司基于安全考虑，要求给用户SFTP，SCP权限可以上传相关文件到指定目录，但不能SSH登录，考虑到RSSH也是个解决方案，但有点麻烦，最后找到了SCPONLY

直接说下配置过程，

如果你的系统是CENTOS，那直接用这个配置

1.wget -c http://nchc.dl.sourceforge.net/s … nly/scponly-4.8.tgz #scponly 支持的软件有scp、sfp、rsync、subversion、gftp等客户端
2. ./configure –prefix=/usr/local/scponly –enable-chrooted-binary –enable-sftp-logging-compat –enable-scp-compat –enable-passwd-compat
3. make && make install #安装配置
4.echo /usr/local/scponly/sbin/scponlyc >> /etc/shells
5.make jail #建立chroot用户、目录及上传文件夹, 根据提示输入
然后我们要写一个脚本

#vi limit_scp.sh
#!/bin/bash
cp /lib64/ld-linux-x86-64.so.* in /home/$1/lib64/
cp /lib64/libnss_files.so.2 /home/$1/usr/lib64/
ldconfig -r /home/$1/
cp /etc/group /home/$1/etc/
mkdir /home/$1/dev
mknod /home/$1/dev/null c 1 3
chmod 666 /home/$1/dev/null
cat > /etc/sysconfig/selinux << EOF
SELINUX=disabled
SELINUXTYPE=targeted
EOF
exit 0
6.#sh +x limit_scp.sh username       #username 是jail时 我们设置的
经过以上步骤就完成了对SCP/SFTP上传目录做出了限制。
好了，可以直接到我们的测试环节了


如果你的系统是UBUNTU，那就要注意版本了，我的是Ubuntu 12.04.1 LTS 

#wget http://ncu.dl.sourceforge.net/project/scponly/scponly/scponly-4.8/scponly-4.8.tgz
#tar -zxvf scponly-4.8.tgz
#./configure -prefix=/usr/local/scponly -enable-chrooted-binary -enable-sftp-logging-compat - enable-scp-compat -enable-passwd-compat
# make

gcc -g -O2 -I. -I. -DHAVE_CONFIG_H -DDEBUGFILE='"/usr/local/scponly/etc/scponly/debuglevel"' 

-o scponly.o -c scponly.c
scponly.c: In function ‘main’:
scponly.c:226:9: warning: ignoring return value of ‘fscanf’, declared with attribute 

warn_unused_result [-Wunused-result]
gcc -g -O2 -I. -I. -DHAVE_CONFIG_H -DDEBUGFILE='"/usr/local/scponly/etc/scponly/debuglevel"' 

-o helper.o -c helper.c
helper.c: In function ‘check_dangerous_args’:
helper.c:233:6: error: #elif with no expression
make: *** [helper.o] Error 1

root@ubuntu:/tmp/scponly-4.8#vi helper.c

把第 233 行
#elif
改成
#else

再重新make

root@ubuntu:/tmp/scponly-4.8#make && make install
root@ubuntu:/tmp/scponly-4.8#echo /usr/local/scponly/sbin/scponlyc >> /etc/shells
root@ubuntu:/tmp/scponly-4.8#ln -s /lib64/ld-linux-x86-64.so.2 /lib/ld.so
root@ubuntu:/tmp/scponly-4.8#make jail #建立chroot用户、目录及上传文件夹, 根据提示输入


-en Username to install [scponly]

mytest      #要建的用户

-en home directory you wish to set for this user [/home/usertest]

          #用户的目录

-en name of the writeable subdirectory [incoming]

www      #用户上传的目录


Your platform (Linux) does not have a platform specific setup script.

This install script will attempt a best guess.

If you perform customizations, please consider sending me your changes.

Look to the templates in build_extras/arch.

 - joe at sublimation dot org


please set the password for usertest:

Enter new UNIX password:

root@ubuntu:/tmp/scponly-4.8#mkdir /home/usertest/dev
root@ubuntu:/tmp/scponly-4.8#cp -rp /dev/null /home/usertest/dev
root@ubuntu:/tmp/scponly-4.8#mkdir /home/usertest/lib64/
root@ubuntu:/tmp/scponly-4.8#cp /lib64/ld-linux-x86-64.so.2 /home/usertest/lib64/
root@ubuntu:/tmp/scponly-4.8#cp /lib/x86_64-linux-gnu/libnss_* -av /home/usertest/lib

注意：如果没有拷贝lib，就报错，类似：

scponly unknown user 1005  lost connection

好了，我们测试下

SSH

root@ubuntu:/home/mygod# ssh [email protected] 
The authenticity of host '18.92.185.2 (18.92.185.2)' can't be established.
ECDSA key fingerprint is c1:c2:6a:7a:68:c8:e5:a6:87:f4:9b:95:d5:fd:ff:09.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '18.92.185.2' (ECDSA) to the list of known hosts.
[email protected]'s password: 

Welcome to aliyun Elastic Compute Service!


The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.

Last login: Tue May  5 16:57:18 2015 from 183.11.156.185
Connection to 18.92.185.2 closed.

SFTP

root@ubuntu:/home/mygod# sftp [email protected]
[email protected]'s password: 
Connected to 18.92.185.2.
sftp> ls
bin    dev    etc    lib    lib64  usr    www    
sftp> cd /
sftp> ls
bin    dev    etc    lib    lib64  usr    www    
sftp> cd /root
Couldn't canonicalise: No such file or directory
sftp>

SCP

root@ubuntu:/tmp# scp a.txt  [email protected]:www
[email protected]'s password: 
a.txt                                         100%    4     0.0KB/s   00:00

验证下目录锁定

root@ubuntu:/tmp# scp [email protected]:/etc/group ./
[email protected]'s password: 
scp: /etc/group: No such file or directory