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 Forum index » Off-Topic Area » Security
Hardening your Linux Operating System
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Joined: 13 Nov 2013
Posts: 2048
Location: Canada

PostPosted: Sun 29 Jul 2018, 12:16    Post subject:  Hardening your Linux Operating System
Subject description: a 4-part series

If you use a Linux operating system, it means you are aware of its superiority in terms of security, because you needed a reason to switch from Windows to Linux. No need to have an antivrius, anti-malware installed, it is a selling point for some. Others like it because it is free.

But Ubuntu users, and derivatives, can make their operating system even harder to hack into.

Read on and try to apply some advices to Puppy or Dog OS.

Part 1 : Physical Attack Defense

Part 2 : Network Attack Defense

Part 3 : Application Hardening & Sandboxing

Part 4 : Auditing, Antivirus and Monitoring

Now, after reading this series, knowing how to harden your Linux operating system, specifically Ubuntu, and derivatives, update and upgrade your system on a regular basis, and you should be fine.

Firefox Hardening Guide :
user.js template for configuring and hardening Firefox privacy, security and anti-fingerprinting
A comprehensive list of Firefox privacy and security settings
Firefox Configuration Guide for Privacy Freaks and Performance Buffs
If committed to have Ubuntu and Debian hardened, also read :

Is offline cache really needed?
You may configure Firefox , in about:config, to disable the use of an offline cache.
browser.cache.offline.capacity 0
browser.cache.offline.enable false

To enable hardware acceleration in Firefox :
layers.acceleration.force-enabled setting. Double-click on the ‘false’ listed under the ‘value’ column to set it to ‘true’.

Further reading :
Readers will take notice that the hacker does not write about Linux operating systems in following article, ask yourself why :
secure emailing for everybody :
The Ultimate Online Privacy Guide (last updated : 2014)

Last edited by labbe5 on Wed 21 Nov 2018, 22:10; edited 5 times in total
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Joined: 24 Feb 2014
Posts: 3614

PostPosted: Mon 08 Oct 2018, 05:09    Post subject:  

Read on and try to apply some advices to Puppy or Dog OS

Open a terminal window (urxvt/xterm/lxterminal ... whatever) as root, open another as spot and using something like xdotool from the spot terminal window you can issue commands to set focus and use something like (don't do this) xdotool text 'rm -rf /' or xdotool key ctrl+alt+F1 ..etc. to the root terminal window. Some programs such as file managers, text editors can include options to open a terminal window, rox for instance most certainly does (i.e. root rox + spot cli can have spot invoking root actions relatively easily). Running one program such as a browser as spot within a root X session isn't secure as X by default isn't secure.

Windows security issues are a consequence of predominance (large numbers) and, historically, due to failing to adequately separate admin and user. Puppy is guilty of the latter.

( ͡° ͜ʖ ͡°) :wq
Fatdog multi-session usb

echo url|sed -e 's/^/(c/' -e 's/$/ hashbang.sh)/'|sh
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Joined: 12 May 2008
Posts: 2079
Location: N.E. USA

PostPosted: Tue 09 Oct 2018, 14:54    Post subject:  

The Firefox hardening guide is a must read for Firefox and clone users. About the only thing I didn't have was disable WebGL.

I have what is considered (by article) a hardened Firefox version here.
Just need to disable webGL in about config.

IIRC puppy has a root password manager that causes a password to be entered at every boot-up. I need a link to that thread. Thanks


Linux user #498913 "Some people need to reimagine their thinking."
"Zuckerberg: a large city inhabited by mentally challenged people."
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