Join Sean Colins for an in-depth discussion in this video ShieldsUP! panic mode, part of Linux: Firewalls and SELinux.
- [Instructor] There comes a time…in every system administrator's life…when the panic starts and you want to make the order…for shields to be put up on full.…If you are absolutely certain by watching network traffic…that you have a system that is under attack…and you don't know why…and you need time to figure it out,…clearly there is always the option…of pulling the Ethernet cable out of the back of the system.…But we don't always have that access.…Sometimes our systems are virtualized.…
Sometimes, frequently in fact, they're in data centers.…Sometimes we don't have the ability…to get to that physical Ethernet cable.…So we introduced panic mode.…Firewalld comes with a panic mode that will…absolutely stop all network traffic…in the case of an emergency.…So I want to tell you what that was…and tell you how to enable it.…So we start with the firewall-cmd command,…as we have before.…And then what we're going to do…is we're going to just do two dashes,…write the word, panic, and then the word, on.…
This is something that changed in version 0.3.0.…
- 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
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