Join Sean Colins for an in-depth discussion in this video Understand Firewalld services, part of Linux: Firewalls and SELinux.
- [Narrator] We just got finished talking…about what zones are and how you can view them…and how they relate to the idea of working…within the FirewallD system.…But there's another area that I think is worth talking about…and that is with services.…The Fedora project defines a FirewallD service…as a list of local ports and destinations…and additionally, also a list of firewall…helper modules automatically loaded if a service is enabled.…So this is very useful, right?…And it's helpful if you think about it.…
FirewallD is providing a list…of commonly used TCP and UDP ports…so you can easily figure out which ports…and protocols are being used by the different services…you may be running on the Linux server…or host you're firewalling.…So let's see a list of supported…services that are installed be default with FirewallD.…To do that, we're going to type firewall-cmd --get-services.…I'd like to point out that I am running this…as root in a pseudo session as we've talked…about in one of the first movies here in this chapter.…
- Working with iptables
- Installing Firewalld
- Exploring zones and services
- Allowing the Apache web server
- Allowing FTP and SFTP servers
- Installing SELinux utils
- Setting discretionary or mandatory access
- Installing SELinux man pages
- Working with Booleans
- Changing context labels
- Running sepolicy
- Finding SELinux logs
- Making domains permissive
- Disabling and reenabling SELinux
Skill Level Intermediate
Linux: Multitasking at the Command Linewith Scott Simpson39m 1s Intermediate
1. Firewall Basics on Linux
2. Configuring Firewalld for Local Protection
3. SELinux Fundamentals
4. Working with SELinux
5. SELinux Troubleshooting
Next steps3m 4s
- Mark as unwatched
- Mark all as unwatched
Are you sure you want to mark all the videos in this course as unwatched?
Take notes with your new membership!
Type in the entry box, then click Enter to save your note.
1:30Press on any video thumbnail to jump immediately to the timecode shown.