- Apr 16, 2017
- 3,137
I still need to take more time understanding H_C more deeply. And saw unexpected side-effect from using H_C firewall hardening earlier today. I was signed in at youtube, watching a cruelsister video!, and when I tried to post a simple thank you reply I got "comment failed to post" in red text! Never seen that before, at first I thought maybe cruelsister had some sort of limitation on her channel, but soon discovered I could not post a comment anywhere. Only thing that comes to mind on my side is the firewall hardening, but I also checked the H_C tool blocked events log, and nothing is shown for today. I suppose youtube may be blocking me, but I'd have no idea why, and if that was the case, I think they'd block my login, not my ability to post.System hardening is an excellent protection step but it requires understanding as I mentioned earlier. Let me give a very simple example. It's common that hardening software will stop PowerShell from working, for instance. That's ok if you don't use it for anything but even some very simple tools, such as TCPOptimizer, requires PowerShell to acquire TCP stack information. Also, some of the most powerful Windows maintenance tools require PowerShell.
A common complaint in forums is that some parts of Windows will display a message similar to "this setting has been locked by an administrator/system policy" That is also caused by hardening.
IF you understand what the hardening software is doing, it's amazingly simple to change the setting that is causing you trouble. Otherwise, you'll end up in forums asking for help.
Some other hardening tips, such as do not install Java sometimes is not possible depending on the software you need for your work. I for instance, needed Java installed on my computer up to around 2 years ago because of two different government client software I needed to run on my computers to work. Not having Java installed, simply was not an option. Those tooles still require Java but are now self-contained and do not require a system-wide installation of Java to work just in case you are curious.
So, if you feel your current software is not protective enough and wish to use a layered approach, I recommend you do so, but FIRST understand how the hardening works. There is no "one size fits all" you need to understand what is being done to be sure it will not cause you any unnecessary problem. I'm glad when I see people like @simmerskool and @Guilhermesene saying they took time to understand the tips and instructions before applying. They learned something useful that will avoid them having a lot of trouble in the future.
PS re fw hardening I selected "ADD recommended H_C" ie I did not select, LOLBins, MS Office, Adobe Acrobat, or an external block list. Just now realized logging was "off" but now "on" so I'll go back to youtube and see if anything is logged.