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.
Sendmail
Sendmail is one of the most venerable Internet software packages still in widespread use: it first appeared in 4.1c BSD Unix (April 1983), and to this day, it has remained the most relied-upon application of its kind. But Sendmail has both advantages and disadvantages.
Sendmail Pros and Cons
On the plus side, Sendmail has a huge user community; as a result, it’s easy to find both free and commercial support for it, not to mention a wealth of electronic and print publications. It’s also stable and predictable, being one of the most mature applications of all time.
On the down side, Sendmail has acquired a certain amount of “cruft” (layers of old code) over its long history, resulting in a reputation of being insecure and bloated. Both charges are open to debate, however.
While it’s true that Sendmail has had a number of significant vulnerabilities over the years, these have been brought to light and fixed very rapidly. An argument can therefore be made that Sendmail security is a glass half-empty/half-full situation. Depending on your viewpoint, Sendmail’s various vulnerability reports and subsequent patches may prove that Sendmail is inherently insecure; or perhaps the fact that they come to light and are fixed quickly prove that Sendmail’s development team and user community are pretty much on top of things; or maybe you think the truth is somewhere in between. (I’m in this last camp.)
A more useful criticism is that Sendmail is monolithic: a vulnerability in one portion ...
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.