One approach to rule them all?
I was just wondering, in the terms used by LFS201, if "modern" is to be read as "whatever Red Hat prefer at the moment", and "legacy" means "used by other distribution families"?
The Firewalls chapter seems -- to this user of Debian derivatives at least -- to be all about skipping over other approaches and zeroing in on the RH/systemd approach as embodied by firewalld and firewall-cmd. More or less to the exclusion of all others, including the "legacy" iptables. I'm not sure whether "drop what you're doing and install Red Hat's alternative" is as educational as it is indoctrinaire.
I appreciate that space is limited, and that you can't cover every last angle. But perhaps these limitations can be met without glossing over or ignoring non-RH practices. A great deal of the examples seem to start with the RH way of doing things first, and others later if at all.
Comments
-
It is not a pro Red-Hat bias. All the distros are moving to firewalld. (and it is not a systemd bias either).
iptables is covered thoroughly in the next course (LFS230), but firewalling in general is not supposed to be covered much if at all in the LFCS exam. iptables is rather complicated to give a simple introduction to and that is the reason it is not really discussed. It is easy to use firewalld on Debian-derivatives and all the distros still cover iptables.
We have worked hard to make sure everthing is tested on redhat, suse and ubuntu and debian. Whenver it doesn't someone tells us and we fix it. However, red hat does have the vast lionshare of the Enterprise market and most of our students who work in sys admin are on redhat of some form. So we have to be doubly sure about it working on RH.
So I'm sorry we give iptables short shrift. If you have ever tried to write a short description of iptables that gives enough information to actually be used (rather than to destroy a system) you know what i mean. firewalld is actually simpler and more future oriented and we try to train people in the future.
Thanks for your concern and patience0 -
So I take it ufw isn't going to get me very far?0
-
Sorry for delay in responding. I have nothing against ufw and it seems to be mostly a ubuntu/debian oriented facility. It is mentioned in the text but not expounded on.
If we were writing a detailed thing on firewalls it would deserve a fair treatment.
The choice of firewalld was to teach concepts plus the fact it is available on all distros so we don't have to say on Ubuntu using ufw do this, on RedHat using firewalld use this, etc, and we get lost in the weeds. We could have done this with iptables, which while it is familiar with sysadmins, is hard for a newcomer to grok -- that is why it is done in detail in the next course, LFS230. And so is ufw (discussed in LFS230)
in some depth, though not as much depth as iptables. We can't do everything in one course.0
Categories
- All Categories
- 51 LFX Mentorship
- 104 LFX Mentorship: Linux Kernel
- 576 Linux Foundation IT Professional Programs
- 304 Cloud Engineer IT Professional Program
- 125 Advanced Cloud Engineer IT Professional Program
- 53 DevOps Engineer IT Professional Program
- 61 Cloud Native Developer IT Professional Program
- 5 Express Training Courses
- 5 Express Courses - Discussion Forum
- 2K Training Courses
- 19 LFC110 Class Forum
- 7 LFC131 Class Forum
- 27 LFD102 Class Forum
- 157 LFD103 Class Forum
- 20 LFD121 Class Forum
- 1 LFD137 Class Forum
- 61 LFD201 Class Forum
- 1 LFD210 Class Forum
- LFD210-CN Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum
- LFD237 Class Forum
- 23 LFD254 Class Forum
- 611 LFD259 Class Forum
- 105 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 1 LFD273 Class Forum
- 2 LFS145 Class Forum
- 24 LFS200 Class Forum
- 739 LFS201 Class Forum
- 1 LFS201-JP クラス フォーラム
- 11 LFS203 Class Forum
- 75 LFS207 Class Forum
- 300 LFS211 Class Forum
- 54 LFS216 Class Forum
- 47 LFS241 Class Forum
- 41 LFS242 Class Forum
- 37 LFS243 Class Forum
- 11 LFS244 Class Forum
- 36 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- LFS251 Class Forum
- 140 LFS253 Class Forum
- LFS254 Class Forum
- 1.1K LFS258 Class Forum
- 10 LFS258-JP クラス フォーラム
- 93 LFS260 Class Forum
- 132 LFS261 Class Forum
- 33 LFS262 Class Forum
- 80 LFS263 Class Forum
- 15 LFS264 Class Forum
- 11 LFS266 Class Forum
- 18 LFS267 Class Forum
- 17 LFS268 Class Forum
- 23 LFS269 Class Forum
- 203 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- LFS274 Class Forum
- LFS281 Class Forum
- 235 LFW211 Class Forum
- 172 LFW212 Class Forum
- 7 SKF100 Class Forum
- SKF200 Class Forum
- 903 Hardware
- 219 Drivers
- 74 I/O Devices
- 44 Monitors
- 116 Multimedia
- 209 Networking
- 101 Printers & Scanners
- 85 Storage
- 763 Linux Distributions
- 88 Debian
- 66 Fedora
- 15 Linux Mint
- 13 Mageia
- 24 openSUSE
- 142 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 357 Ubuntu
- 479 Linux System Administration
- 41 Cloud Computing
- 70 Command Line/Scripting
- Github systems admin projects
- 95 Linux Security
- 78 Network Management
- 108 System Management
- 49 Web Management
- 68 Mobile Computing
- 23 Android
- 30 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 537 Off Topic
- 131 Introductions
- 217 Small Talk
- 21 Study Material
- 826 Programming and Development
- 278 Kernel Development
- 514 Software Development
- 928 Software
- 260 Applications
- 184 Command Line
- 3 Compiling/Installing
- 76 Games
- 316 Installation
- 61 All In Program
- 61 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)