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5
votes
1answer
19 views

gdm greeter configuration: Exclude all *except* for one specific user

I have Googled this one and tried so many combinations, with no success. I need the GDM login greeter to display one and only one username. In effect, what I need is something like this in ...
1
vote
1answer
60 views

Auto-delete LUKS Key-slots

After installing Kali with the Nuke feature I'm wondering if there's an easy way to limit failed login attempts by simply erasing the LUKS keys-lots. EDIT: I'm asking with the idea in mind to store ...
1
vote
1answer
101 views

Mount home partition on user login

I got a VPS with a user dedicated to store my files. As i am aware of the current situation with the NSA and many other governments, and my VPS is hosted on a doubtful country i would like to ensure ...
0
votes
1answer
43 views

Is it possible to have a seperate firefox profile for root?

There's a shared office PC that employees can use to surf / look up information on, etc. There are times when it would be convenient for me to use the same PC to check my email / log into secure ...
2
votes
1answer
52 views

Keep track of all files accessed by a specific process?

There has recently been a (publicly unconfirmed) report that Skype is accessing files that it shouldn't be, without user intervention. I have no idea if this is the case with Skype on linux, but it ...
2
votes
1answer
51 views

Prevent `finger` from giving out mail info

To quote from finger's man page Mail status is shown as No Mail.'' if there is no mail at all, Mail last read DDD MMM ## HH:MM YYYY (TZ)'' if the person has looked at their mailbox ...
1
vote
1answer
450 views

Random mac address at startup [closed]

I would like to get a random mac address everytime I turn on my linux machine (debian). Is this possible? If so, how?
0
votes
1answer
64 views

locating somebody on IRC servers over the Internet

Is there a way to locate somebody by his nick or IP address on the internet's IRC servers? I guess the protocol doesn't seem to support it! Still... can it be done? like crawling the web for IRC ...
0
votes
1answer
42 views

Prevent access to files on linux file server

I have a linux system running Debian Wheezy stable on it and am using it as a file repository (not a true file server because I am using BitTorrent sync to move files as I move around the world). Some ...
4
votes
1answer
64 views

Editing Truecrypt Hidden Volume's Outer Volume?

I just created a tor hidden (plausible deniability) volume. I used a 32GB USB flash drive, for the outer volume, and made the inner volume 20GB. Does this mean that I can safely add another ~12GB of ...
2
votes
1answer
115 views

Are remote LUKS volumes mounted locally with sshfs made visible to remote users?

I created an encrypted volume with LUKS and uploaded it to a remote directory on an untrusted host. I can mount it locally though. I first mount the remote directory locally with sshfs and then open ...
4
votes
4answers
174 views

Are commands executed through SSH transparent to a remote host's administrator?

Can administrators know what commands I execute non-interactively through SSH? For example: does echo hello get logged somewhere at remote if I run this? $ ssh me@remote "echo hello" Can remote ...
2
votes
1answer
201 views

What are the key differences between “SSH tunnels” and “Squid reverse IPs” in regards to web page scraping and private browsing?

What are the key differences between "SSH tunnels" and "Squid reverse IPs" in regards to web page scraping and private browsing? Interested to know if there are any differences between using "SSH ...
2
votes
1answer
126 views

Restrict applications to access certain hardware (webcam, microphone…)

If I tell applications like VLC or Audacity to record from my webcam or microphone, they just wake the hardware if sleeping and do their work without my interference. Although this is a good thing, ...
2
votes
1answer
73 views

Do tar archives include user/group name by default?

In tar's man page I stumbled upon two options: --numeric-owner: always use numbers for user/group names --owner=NAME: force NAME as owner for added files This made me wonder: When I tar ...
2
votes
2answers
886 views

SSH using keys in external storage - permissions?

I have a set of SSH keys to login to accounts and servers. However, ever since I moved my main work profile to a USB drive (for sync and ease of use among other reasons) I have been unable to directly ...
2
votes
2answers
1k views

How to remove the “Received: from” from an e-mails source?

I'm using: thunderbird-10.0.3-1.el6_2.x86_64 on Scientific Linux 6.1 and if I send an e-mail (with Gmail) from my Thunderbird then I can see that the e-mail I sent contains a very-very bad thing: ...
3
votes
1answer
664 views

Outgoing firewall application similar to Little Snitch for Mac

Is there a Linux application similar to Little Snitch? Little Snitch is an outgoing firewall that temporarily blocks outgoing network requests until the user decides whether to allow the connection or ...
3
votes
1answer
738 views

How to clear the last -10 info?

How to clear the last -10 information only for a Linux system? I tried to execute the command > /var/log/wtmp to clear the last info, but it clears the whole login info , but I need to clear only ...
3
votes
2answers
520 views

How to make a folder request root password to view execute?

I am running Ubuntu 10.04 LTS. I want to use my laptop to play music in a party. MY screensaver does not need a password to deactivate. I would like to allow people to use my computer to play the ...
1
vote
1answer
418 views

LoJack protection and recovery for Unix/GNU/Linux running systems?

The LoJack theft protection and recovery system looks very impressive, especially that they will find and return your computer for you, but the software is for Windows and OS X only. Is there an ...
9
votes
2answers
875 views

How do I hide/anonymise/defend a computer when on hostile networks?

I connect to a lot of open networks when I'm pootling around. I'm fairly careful to VPN home for anything important but that's not really my boggle. The laptop runs several services (nfs, dev http ...
2
votes
1answer
486 views

Does truecrypt leave behind temporary files

I've I have some scans of sensitive documents in image format such as jpg png etc. When I open up the folder containing them which is in a truecrypt file, will nautilus create a temporary version of ...
1
vote
1answer
150 views

What are the cons of posting dmidecode output publicly?

I remember somewhere mentioned that posting dmidecode output publicly is risky (security/privacy).