CentOS7.2 创建本地YUM源和局域网YUM源
http://www.cnblogs.com/nidey/p/6200685.html
linux安装ssh和开启 ssh服务
https://blog.csdn.net/java_dotar_01/article/details/76942563
Linux下搭建FTP服务器(Ubuntu16.04)
https://www.cnblogs.com/dupengcheng/p/6790143.html#4131982
ftp文件上传下载命令
https://www.cnblogs.com/emilyyoucan/p/7550574.html
linux 添加ftp用户与登录配置详解
https://www.cnblogs.com/staryea/p/8520817.html
什么是SSH 以及常见的ssh 功能
https://blog.csdn.net/u013452337/article/details/80847113
啰里啰唆版本:
Linux 系统安全SELinux讲解配置
https://blog.csdn.net/wads23456/article/details/79515793
Ubuntu 搭建FTP服务器以及解决530问题
https://blog.csdn.net/dreamjava9213/article/details/42155875
ubuntu 14.04 下FTP服务器的搭建–锁定用户目录,解决vsftpd: refusing to run with writable root inside chroot()
https://www.cnblogs.com/bcsflilong/p/4200139.html
FTP(vsftp)服务器的搭建配置以及访问控制
https://blog.csdn.net/lockey23/article/details/76736665