General :: Secure Erase Of CF Card Over USB?
Aug 9, 2011
I have a CF card I'd like to erase. My CF card reader is connected to my Linux machine via USB. How do I do a secure erase (i.e., the ATA Secure Erase functionality) of the CF card?
I have tried hdparm --security-erase NULL /dev/sdc, but I get an error: ERASE_PREPARE: Invalid exchange. In fact, any hdparm command gives me the same error:
# hdparm -I /dev/sdc
/dev/sdc:
HDIO_DRIVE_CMD(identify) failed: Invalid exchange
I read somewhere that hdparm can't do an ATA Secure Erase of a drive that is connected over USB. Is this true? I tried using sdparm, but sdparm doesn't seem to have the capability to send the ATA Secure Erase command to the CF card. So, what is the proper way to do this?
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Jan 11, 2011
can hdparm do secure erase on just a partition or does it have to be the whole drive?
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Oct 18, 2010
I first tried to use UBCD HDDErase although it won't detect my seagate 1000 GB Sata HD (This worked for my other computer/HD). So I loaded up a OpenSUSE live cd rescue terminal to enter the command (of course after setting a password and making sure HD is not frozen):
time hdparm --user-master u --security-erase uber /dev/sda
The following line appears:
"Issuing SECURITY_ERASE Command, password="uber", user=user
That's all it says and there is no % completed or anything. (as it appears on the wiki)
https://ata.wiki.kernel.org/index.php/ATA_Secure_Erase
Also I can still type but theres no command or console or anything it just is blank if I hit enter.Is my HD being wiped right now? or is it not working?
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Jan 14, 2010
I have recently installed ubuntu on a previously vista operated laptop, now i need to eradicate all of vista i care not for it at all, I've read some of the threads here and saw someone say something about ubuntu overwriting everything on my hard drive including vista, is that dangerous, easy, and the most efficient way of doing this. i also tried removing the partition of vista by following a response to a thread, using gparted but now im stuck and i failed horribly (very limited computer knowledge).
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Nov 22, 2010
Assume I have a computer on which I want to use ubuntu for a while (single boot). Assume also that in about six months I want to give this computer to Mr. X, but I do not want Mr. X to know that I have been using ubuntu. I don't want to install anything over top of ubuntu, I just want the computer to be completely (or as nearly completely as possible) blank so that Mr. X cannot infer what I've been doing on it. The trick here is that I can't use operating system x_{1} to delete operating system x_{0}. I don't want Mr. X to know anything about which OS I have been using. Mr. X, by the way, is a sophisticated computer user but not particularly interested in tracking me down. Once he sees that the computer is blank Mr. X will just install his own operating system and everybody will be happy.
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Sep 1, 2010
I am in fc13, have installed a package, realise lately that its not really useful. that package install a lot of package for dependency.How can i erase all the package together that was downloaded and installed together with the target package as dependency via yum? actually i have done it using #yum erase `cat /var/log/yum.log |grep "Aug 31 22" |awk '{print $5}'|`as I know when I have installed them.....but is there ant safer and better way?
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Jan 15, 2011
I need to restart my harddrive and reinstall debian.
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Oct 12, 2010
Can anybody explain step by step how to erase windows xp from the computer and how to install Ubuntu?
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Jun 22, 2011
After installation, when starting to boot, I have several choices showing:
1)Ubuntu, w/ Linux 2.6.38-8-generic pae
2)Ubuntu, w/ Linux 2.6.38-8-generic pae (Recovery Mode)
3)Memory test (memtest 86+)
4)Memory test (memtest 86+, serial console 115200
5)Windows Server 2003 For Small Business Server (on /dev/sdd1)
I used #1 and I only have a blank screen.
I used #2 and I went into recovery mode, but I keep getting the error message: "No root
file system is defined. Please correct this from the partition.
I just want to erase all of numbers 1 to 5 and start clean. what should I do?
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Dec 1, 2010
I'm an Oracle DBA and started working for my current employer about 4 months ago. This past weekend an alert re: FS space brought my attention to /var/spool/clientmqueue (full of mail re: cron jobs) and the fact that sendmail is not running on our Linux servers.I'm told that the IT security team deemed sendmail too vulnerable so we don't run it.Aside from FS filling up and missing notification of issues with crontab entries, I'm concerned that we may be missing notification of potential issues. In other Unix/Linux environments I've seen emails from the print daemon when it experienced problems with specific jobs.
Are there other Linux facilities aside from cron and lpd that use email to advise the users of possible issues? Are there ways to secure sendmail or secure alternatives to sendmail? My primary need/desire is to make sure that emails regarding issues on the server get to the appropriate users. Secondary goal would be to have the ability to use mailx to send mail out. There is No need/desire to receive mail from outside.
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May 1, 2011
How can I change or erase windows XP password from Ubuntu Live (11.04) booted on the PC in question? I reckon it should be possible, at least it is possible to do so to another Ubuntu installation, but I never knew how to do it to XP.
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Mar 3, 2011
The XP partition ceased to boot (in fact when it seems to start Windows, it re-boots once and again). I can access the XP partition from Ubuntu 9.10
If I boot with the WXP CD and reinstall it in the original NTFS partition, will it wipe the boot menu out, loosing any chance to boot in Linux?
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Feb 2, 2011
How do I format another drive to "accept" Linux and delete/erase Windows?
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Aug 3, 2011
setting up secure ftp on linux
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Apr 21, 2011
there are different methods for securing based on home versus professional computers. My questions generally pertains to securing home desktops, but professional protection is definitely welcome :) Knowledge is power. Ever since moving to the wonderful world of Linux a couple years ago, I never even really thought about security. Seeing as most low-life scum make viruses for Windows machines seeing as they're more abundant.But how do I know if I'm safe/secure from anyone who want's to get at me or my stuff. I know that anyone who is determined enough to get in will, there's no question about that. But what steps can I take to ensure I'm protected from things like rogue root shells and automatic attacks? Also, is there a sort of built-in firewall/antivirus in more Linux distros?
I know this question is quite broad seeing as there are tons of ways someone could compromise your system, but maybe you could share what you did to make sure you were safe.I decided to not allow root login via ssh and to change the port is listens on to something random. Hopefully this a step in the right direction. Currently looking at iptables and shutting down services.
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Aug 14, 2011
I choose not to run a login manager on my systems, instead opting for a tty login and then invoking xinit manually (slightly long story, it makes my life a lot easier to have a bunch of environment tweaks that my login shell sets up and has the rest inherit), but this leaves me with a security issue if someone else comes upon my PC, because even if I've locked my X session they can switch to a tty and kill my X session, dropping back to a shell.
I can either
Start running xinit; logout (which still has a race condition issue, if they get another Ctrl+C in before logout is invoked it'll give a shell) Try to disable the tty switching keys in X Wrap xinit in something to catch and ignore the signal from the Ctrl+C
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Mar 7, 2011
I am trying to do secure VNC over SSH to a remote linux server from my windows PC, but running into this error.
Error: Unable to connect to host: Connection refused (10061)
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Dec 20, 2010
My better half spilled some coffee on her 8month old macbook and it decided not to work anymore. Apple says it will cost around $800 or more to fix, we wont be paying that, Ill be finding a logic board or service somewhere online now that our warranty is shot and going that route.But before I send the macbook off anywhere I need to pull some data off the HDD. I was able to plug the HDD into my Linux box(internally, I dont have an external enclosure). I was able to mount the drive and copy the directories I wanted to the HDD on my linuxbox.
But Im unable to to access the directory from the terminal or from the file browser, I get an access denied message. Because I know the username and password for the macbook is there a way I can use that to gain access to the directories?Google got me this far, but when I googled "access locked directory ubuntu" or any variation of that with the terms linux and osx thrown in there for good measure.
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Mar 3, 2010
I am using Firefox 2.0.0.8 and Opera.Both the browsers can open all sites except secure sites like, URL>..In Firefox I have checked SSL3.0 and TLS1.0.The default Enforcing mode of the OS I have set to 'Permissive'.
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Jun 11, 2010
I want to learn using SSH (Secure Shell) service in linux and connect to SSH server with PuTTY to test some commands, but I have not worked with it yet;
I have Ubuntu 9.04 on my "Virtual Machine" and my host OS is Win.XP and I have installed "OpenSSH server" and "PuTTY" from the ubuntu repository,
Is this action rational? I mean I want to connect from PuTTY on linux(on VM) to the SSH Server on linux?
(Meanwhile, I have no work with the host Windows and just wanna test it on the linux!)
where should I see the "Host Name/Ip Address" of the SSH Server to enter in the PuTTy's dialog? In windows we can use "ipconfig" command to see the IP Addresses, but I don't know what is the command in linx for this purpose?
use SSH Service in ubuntu correctly
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Sep 23, 2010
If a user want secure coping of files through scp from one system to another system then how this can be done. This user have only been granted securing coping of files through another system but without ssh.
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Jun 13, 2011
I loaded Ubuntu on a Windows OS laptop and am finally figuring out how to connect wireless. Before I do what can I do that will protect me? I am told I don't need anti-virus. Is this accurate? Also, I want a really secure firewall...not one that an experienced hacker could see and just hop over.
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Jul 22, 2010
There are a couple commands I want to run in a terminal that require me to provide my password. I really don't want those commands ending up in any kind of history or anywhere else where they could be seen by someone after the command was run. Are there any shells/terminals for Ubuntu that I could use (or options to bash/zsh/etc) that would give me a secure environment where I don't have to worry about my history being kept?
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Dec 10, 2010
I'm launching screen with the following command, inside a shell script that is set as a user's shell to keep them from escaping.
screen -dRRq -S ${USER}_MC -s $HOME/runthis.sh
Is there a way to secure screen, to keep the user from being able to even use the escape sequence, or at worst, prevent them from running commands like exec?
Edit: It's not that the user should have access to an actual command-prompt shell. I only want them to be able to run a single program that runs persistently, and as far as I know screen is the easiest way to do that. However, getting out of this is as easy as C-a : exec bash.
Right now I've just unbound most of the keys using .screenrc (especially colon), I just want to make sure I'm not missing something easier.
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Aug 2, 2011
I'm looking for a live Linux distro that is secure and preserves my anonymity online. For what I need, Tor seems to do the job - but such software requires configuration that someone who is not knowledgeable in how it works might find difficult. I was looking at 'Lightweight portable security' but it does not specify whether it sends all traffic through Tor. Does anyone know more information about it and/or any other such live Linux distro?
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May 13, 2010
i believe it is a wpa_supplicant problem. running ubuntu 10.04 on a toshiba netbook. i have my account which cannot connect to internet, wicd returns an error that it cannot obtain ip address. cannot even connect to a unesecure network for that matter. if i switch users to another user and do the quick switch users i can get internet then i switched back to my main account and here i am postings. how do i begin to hunt down the problem logs, settings how do some of you begin to hunt down the cause of this and where it would be located.
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Nov 25, 2010
I've been searching for the exact set of tools to accomplish what I need. I was once at a LANparty. I used my webmail account and I think someone stole my password. I realized that the LAN used hubs instead of switches.
So next time, I thought I could run a server at home, which would allow me to connect with SSL (??). Then I would be able to connect to whatever website knowing that I was secure between myself and my home computer. I guess I would need to have a key before a secure connection could be made. Otherwise a "man in the middle" kind of exchange could take place.
So I guess I would need a VPN between myself and my home computer. Then my home computer would act as a proxy to allow me to surf securely. I'm not sure if these are the correct terms to use. Does anyone know what type of server I'm looking for?
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Jan 7, 2010
Been messing around with Ubuntu 9.1 for the last few weeks and am loving it so far. Been trying to get in the terminal and learn a little something, to no avail. LOL I have been googling and searching the site today for info on networking. My Linux box is a desktop, with my main HDD mounted with music, and movies and some other stuff. My intent is to network the two laptops in the house (Windows XP and Windows 7) to the Linux box so I can listen to my music and watch movies when not in the office. I have found some info, mostly involving Samba, and plan to install Samba tonight and fiddle with it. My issue was with security. I have read a few posts and they talk about the fact that if you share files in this manner, the set up is not secure at all. Is this something i should really be concerned about? If the folders I share only have my music and videos in them,
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Nov 2, 2010
I am running WHM and CPANEL on centos.I would like to upload a file to the root user directory. To be honest, my only experience uploading and downloading files with FTP has been with domain related accounts that were set up under WHM to be managed under CPANEL. This is quite simple, because all you do is set FileZilla or Dreamweaver up with the FTP address of the domain account and the username and password.How can I do something similar to FTP a file into the root or home directory?
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Mar 9, 2010
Can any one tell me a good GUI based tool to secure PHP code . i have tried ioncube but its not GUI based on linux
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