December 2018
Beginner
320 pages
8h 57m
English
Content preview from CentOS Quick Start Guide
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Modifying port context
SELinux does much more than just restricting the access of processes to files based on SELinux labels. It can also control the network traffic by restricting access to unauthorized ports for a service. By default, the SELinux policy allows the ssh service to access port, 22/TCP . In the following example, we allow ssh to run on another port 2525/TCP, in addition to its default port, as shown in the following steps:
- The semanage command can be used with the port sub-command to list the current port assigned to a service as shown in the following screenshot:
- We can also use the semanage command for granting access to ...
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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.