October 2002
Intermediate to advanced
448 pages
14h 54m
English
Content preview from Building Secure Servers with LinuxBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 9. Securing File Services
File transfers are among the most important Internet transactions. All Internet applications support file transfer in one form or another. In email, MIME attachments can take virtually any form, including executables and archives. HTTP supports file transfers with aplomb: “loading a web page” actually entails the downloading and displaying of a multitude of text, graphic, and even executable code files by your browser. Even Internet Relay Chat can be used to transfer files between chatters.
When all is said and done, however, email, HTTP, and IRC are all designed to handle relatively small chunks of data. This chapter covers tools and protocols specifically designed for transferring large files and large quantities of files.
The File Transfer Protocol
(FTP) in particular is
one of the oldest and (still) most useful methods for TCP/IP file
transfers. Accordingly, this chapter covers both general FTP security
and specific techniques for securing the ProFTPD FTP server. But FTP
isn’t the best tool for every bulk-data-transfer
job, so we’ll also cover RCP, SCP, and rsync. These,
unlike FTP, can be encrypted with the help of Secure Shell or
Stunnel, covered in Chapter 4 and Chapter 5,
respectively. (Chapter 4 also covers
SFTP, an FTP-like frontend for the Secure Shell.)
FTP Security
What would we do without FTP? You can use FTP to install Linux, download software from public archives, and share files with friends and colleagues. It’s both venerable and ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.