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Old 02-28-2010, 01:39 PM   #16
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Have you seen this

Old 06-07-2010, 04:50 PM   #17
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Location: Round Rock, TX
Distribution: Slackware 14.2
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I run Slackware 13.1 with GNOME 2.30.0 so I do a Slackware full-installation with GNOME.
To harden this I do the following for a laptop:
1. Completely encrypt the hard drive with LUKS.
2. Use a good password for root user and regular user.
3. Disable unneeded services. Use the command "netstat -lundt" to see which services are running. Then use "cat /etc/services | grep <service_number> to see what this port is used for. Then, either remove the executable bit from the startup script in /etc/rc.d/rc.<service> or comment-out the unneeded services in /etc/inetd.conf
4. Install the FireHOL application from It lets you configure a firewall using plain English.
5. For the more paranoid, you can password-protect lilo so boot parameters cannot be changed and it will only boot Slackware. Also you can disable booting from a CD-ROM/USB in the BIOS and add a BIOS password so no one can boot using a Live-CD.
6. Check the Slackware website and keep up with patches so your system is up-to-date.
7. I harden Firefox with a) Better Privacy (Flash Cookies) b) No Script (Browser Scripting) c) Ad-Block Plus (Popup Blocker)
Old 06-08-2010, 11:22 AM   #18
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Location: Harrisburg, PA
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Thanks for the excellent response! I'll especially need to check out FireHOL.

Old 06-08-2010, 05:56 PM   #19
Samhain Slackbuild Maintainer
Registered: Sep 2004
Location: Phoenix, AZ, USA
Distribution: Slackware
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I beat the crap out of my systems and I can't see any slow down in my laptop when I use LUKS, AES 256, and LVM as specified in the Slackware distribution docs.

I stayed away from disk encryption for a long time because I am always trying to eek out as much performance as possible. I use Fluxbox for my Window Manager, KDE is a pig. This is a 2.2 GHz dual Core Intel Centrino with 4 Gigabytes of RAM. It's a decent system but there is seriously no performance difference as far as I can tell. Things have been rock solid and reliable. Suspend works as well. I should have encrypted it a long time ago. The speed difference was the boogy man. I can't see that it exists.

The benefits of data safety are obvious. I wish I had tried this sooner. I would have slept better when traveling with this thing. AES appears to be "Good Enough" for Top Secret government stuff, so I guess I'll live with it ;-) Top Secret requires AES 192 or something.


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