General :: Will WPA Encryption Interfere With A Netinstall
Jun 6, 2010
I have been trying to perform a netinstall (of Debian). Will the WPA encryption on my wireless network prevent (or at least make difficult) the netinstall? Will I need to have the WPA password handy or even to temporarily remove the encryption?I haven't actually run into this problem yet; what I was dealing with on the last attempt, before I decided to finish the netinstall later and went back to my working Linux system (I got impatient with being stuck outside it), was that the netinstall couldn't detect my network by DHCP, and wanted me to enter an IP address. I don't suppose that would be any more difficult than going to the host computer and writing down its IP address, but thinking ahead, I wondered whether the WPA encryption would pose another problem.I didn't really think about these issues when deciuding to try a netinstall: whether my internet connection would work. I mean, if it doesn't, trying to netinstall is a waste of time.
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Jul 7, 2010
A friend of mine is having a problem where one application will cut off another application when playing sounds.
For example, if he has amarok playing music and pidgin beeps on a new message, amarok stops.
If he has vlc playing music, and then has amarok play something simultaneously, vlc stops.
The only related bug I've been able to find is [URL]
But I cannot even confirm that this is a pulseaudio problem. He's using an updated 10.04 installation
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Aug 22, 2011
What is the difference between "bin" and "netinstall" ISO files for Linux?I need a full OS, not just a Live CD. On the mirrors there are two kind of files.Which one is the full OS?
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Dec 19, 2010
So I am (excitedly frustrated) 3-4 months from the first working install of my linux server. So I am setting up a team to work on the server, I have a couple questions. first what the server will do.The server will host icecast (internet broadcasting program similar to shoutcast), podcast versions of said shows, and a website.
1. Will icecast or similar interfere with normal hosting of the website (though they are coming from the same server I believe its broadcasted on different ports so I imagine not)
2. Should I use a seperate server to store the mp3's or is it ok to keep them where on the same machine ( I would like to keep them on the same machine, logicly I would think it would cut down on load time)
3. I am worried about server maintaince in the way of hackers n such as well as hardware and software, memory usuage, bandwidth is there a checklist and maybe a way to automate this.
I should clarify, I know how to tell schedule a task but what if I need it in perverbial safe mode (yay windows) and I can't be there for it to happen and when its finished return to work as usual by its self.
4. I was thinking my content (file) manager, server maintainer, and I would have access to wlan when we can't physically be there, is this safe? Can I make it safer? What about ftp for my webdesigners and podcasters?
5. I started having doubt about myself using linux (ubuntu server) because for cost saving I am sacrificing a gui as well as general knowledge. I have previously installed and got working a server in linux before but I don't know what hole I could have possibly left open. Question would it be better and easier to use someone else to host my site for me such as amazon or o-f.com or should I keep going with linux, or buy windows server?
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May 22, 2011
I was experiencing problems in Totem (Movie Player) seeking through some mp3 files. This problem, luckily, was solved (as per this launchpad bug post) by swapping the package:
gstreamer0.10-plugins-bad
for the package:
gstreamer0.10-plugins-bad-multiverse
The only problem being that the package Miro requires:
gstreamer0.10-plugins-bad
So, this makes me have to choose between Totem and Miro. I'd like to use both, fully enabled.
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Apr 4, 2010
What are my options for encrypting the /home directories of my Ubuntu laptops? They are currently setup without any encryption and some have /home as a separate partition whilst others don't. Most of these laptops are single-user standalone laptops which are out on the road a lot.
Is ecryptfs and the encrypted Private directory good enough or are there better, more secure, options? If somebody got hold of the laptop, how easy would it be for them to gain access to the encrypted files?
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Jul 21, 2010
I have PDF files secured using 256-bit AES, requiring a password to open the file (Acrobat 9 or greater)
I can use Foxit Reader or Adobe Acrobat just fine on Windows, but I can't view those PDF's on Ubuntu or Mac OS X. What PDF readers for OS X and Ubuntu support 256-bit AES?
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Oct 27, 2010
how to test the AES Encryption in the openSuSE 11.3
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Feb 21, 2010
Question: The USA forbids the export of secure cryptography. NSAKEY has already been discovered in the Windows cryptograhic API. Since the Linux-Kernel is hosted in the USA, how secure is its cryptography ?
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Mar 1, 2011
Currently I am wondering whether it is possible to apply asymetric encryption of a directory in Linux.
I would like to achieve the following:
Write log files to /var/log/secret Everything written to /var/log/secret is instantly encrypted by a public RSA key (or something similar)
The encryption programms I know, i.e. ecryptfs do not support asymetric encryption of files, at least as far as I know. (Correct me if I am wrong). Therefore I am asking here whether you know of any possibility to implement this.
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Mar 31, 2011
I've accidentally encrypted my 8GB usb stick instead of my 4GB stick and now I need to revert the encryption on the 8GB one. There doesn't seem to be an option like this in the TrueCrypt interface when I mount the USB.
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Dec 9, 2010
I am using dd_rhelp to recover data from a failed 80Gb hard drive with Windows XP and PGP encryption.
My question: How do you mount a drive encrypted with PGP under Windows on a Linux box?
My scenario...
1. I am new to Linux
2. I do not know the PGP passphase
3. I am using Ubuntu and Knoppix
4. I have another 80Gb drive as the target drive
5. Source (bad) drive /dev/sdc1 drive is attached via a SATA-to-USB adapter
6. Target (good) drive /dev/sda1 drive is installed in laptop
My Problem....
Copies data from source to target drive with many errors. When I view the files copied to the target disk they file names are gibberish (extend character sets for file names) with huge file sizes (up to 9Gb).
I plug the target drive into a Windows laptop and it does not recognize it, even though it was formatted as ntfs.
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Nov 12, 2010
I used this password Pass1234 when I search password stored its Nh2yEjhdHIwtY what kind of encryption is used? I thought it was crypt() , but when I create crpypt on my local machine its different.
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Mar 2, 2010
I connect wireless success
WEP Encryption Key:10chars
Interface Type: 802.11b/g
well now in my windows pcs changed to
WEP Encryption Key:26chars [windows success]
what choices must change in ubuntu 9.10 for the new change?
Can you tell for 26chars WEP, what choices do not try [Not Appropriate], so find the solution for the right choice[selections of the form - WLAN CONN] easier of the remaining? E.g. Do not try "40/128..." but "128 passphrase"...?
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Jan 25, 2011
Bitlocker is a harddrive encryption data protection tool which comes with Windows Vista Ultimate and 7. Does anyone know an equivalent for Linux distros like Fedora and Ubuntu?
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Jul 14, 2011
The only reason why I don't use Linux (even though I prefer Linux over Windows, and can do everything faster and more efficiently) is because each time I try to learn about dm-crypt I give up.
Can someone point me in the right direction for full OTFE on Linux (like TrueCrypt)?
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Jul 21, 2010
I'm a relative newby to Linux so forgive me if this is a simple question. I know that if you install Ubuntu using the alternate CD, you can create a whole disk encrypted installation, but what about after a normal installation? What is the best procedure to use to get more than just the home folder encryted? Installation of Fedora 13 gives the option during a normal install to encrypt more than just the home folder. I really only want to encrypt my Ubuntu partition. I have a laptop with a multi-boot setup with Windows 7, Fedora 13 and Ubuntu 10.04 all residing in their own partition. Because of this setup I really can't use whole disk encryption. I use Truecrypt on my Windows 7 partition and it works great but encryption of a Linux system partition is not supported.
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May 12, 2011
Am configured SVN on Ubuntu 10.04 ,It's Working fine ;svn access method is svn://ipaddress .In this method am not encrypting the password ,Currently my passwd (/homesvnMyProject/conf )file like that [users]test = testNow i want to Implement the password Encryption for any users, without implementing svn+ssh:// method
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Nov 26, 2009
I am just wondering what encryption method the shadow file uses, so that I may be able to manually change it. I ask this because I am trying to make a web page that will allow people to change their linux password via a browser.
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Dec 23, 2010
I am building an active directory and using BIND9 as my DNS. To allow for secure dynamic updates from the domain, I am enabling GSS-TSIG as detailed here and here. Unfortunately, some of the commands and configurations used here seem to be depreciated, at least in the newer versions that I'm using. My issue is one of keytab encryption. I generated a keytab using ktpass.exe on the Windows Server 2008 domain controller. I have tried DES/MD5, AES128/SHA1 and AES256/SHA1, each have been turned down by ktutil on the kerberos server (FreeBSD). Each time, it outputs the following error: ktutil: AES256/SHA1*: encryption type AES256/SHA1* not supported *Respective to encryption used.
I cannot find a list of suitable encryption schemes that ktutil will accept. The FreeBSD handbook details a means of producing a keytab file, but I'm not sure how to configure the Domain Controller to use the keytab.
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Oct 21, 2010
I'm not sure of what is going on here, I might be missing something obvious, but anyway my fresh netinstall of Testing doesn't boot without the USB stick that I installed from plugged in. When USB plugged in it boots without problems.
root@dellserver:/boot/grub# fdisk -l
Disk /dev/sda: 60.0 GB, 60011642880 bytes
255 heads, 63 sectors/track, 7296 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0009486a .....
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May 1, 2016
Every single theme has at least one or more broken UI element. In Arc, I'm missing highlighting in the context menu, and in Numix, some application's backgrounds are just completely black. All of these themes don't give me a urlbar. I'm also missing a lot of boxes. There is no box around the word "submit" in reddit, and neither around "cancel". If you go into the search bar, I'm missing the checkbox for "limit my search to /r/...". I know these themes work, because I had them working in my last install of Debian. Except, last time I used the XFCE iso instead of the netinst. Even default themes, like Raleigh, are not working correctly. I installed all the necessary packages like the gtk2 murrine engine, but if the default themes aren't working then something is definitely missing.
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Nov 17, 2009
will it be possible to upgrade F11 to F12 using the netinstall iso? I saw some people got problems when trying to upgrade from F10 to F11 with the netinstall iso: [URL]
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Mar 26, 2010
I'm moving over to Linux when the new SSD arrives. SSD gives increased performance, so I thought that I could encrypt everything.
But then I came to think about TRIM, and garbage collection on the drive. Will a LUKS encrypted drive affect the garbage collection system? (TRIM).
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Jul 3, 2011
I have set up a Linux software RAID5 on three hard drives and want to encrypt it with cryptsetup/LUKS. My tests showed that the encryption leads to a massive performance decrease that I cannot explain. The RAID5 is able to write 187 MB/s [1] without encryption. With encryption on top of it, write speed is down to about 40 MB/s.
The RAID has a chunk size of 512K and a write intent bitmap. I used -c aes-xts-plain -s 512 --align-payload=2048 as the parameters for cryptsetup luksFormat, so the payload should be aligned to 2048 blocks of 512 bytes (i.e., 1MB). cryptsetup luksDump shows a payload offset of 4096. So I think the alignment is correct and fits to the RAID chunk size.
The CPU is not the bottleneck, as it has hardware support for AES (aesni_intel). If I write on another drive (an SSD with LVM) that is also encrypted, I do have a write speed of 150 MB/s. top shows that the CPU usage is indeed very low, only the RAID5 xor takes 14%.
I also tried putting a filesystem (ext4) directly on the unencrypted RAID so see if the layering is problem. The filesystem decreases the performance a little bit as expected, but by far not that much (write speed varying, but > 100 MB/s).
Summary:
Disks + RAID5: good
Disks + RAID5 + ext4: good
Disks + RAID5 + encryption: bad
SSD + encryption + LVM + ext4: good
The read performance is not affected by the encryption, it is 207 MB/s without and 205 MB/s with encryption (also showing that CPU power is not the problem). What can I do to improve the write performance of the encrypted RAID?
[1] All speed measurements were done with several runs of dd if=/dev/zero of=DEV bs=100M count=100 (i.e., writing 10G in blocks of 100M).
Edit: If this helps: I'm using Ubuntu 11.04 64bit with Linux 2.6.38. Edit2: The performance stays approximately the same if I pass a block size of 4KB, 1MB or 10MB to dd.
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Jul 18, 2010
I would really like to try and do a Netinstall on my laptop with it. I know I could just download the CD's/a DVD, but I would rather customize it for my laptop, and I've heard that's the fastest way. The problem is that I have to compile the drivers for both my wireless and my wired internet. I have guides to compile both the wireless [URL] and wired [URL] internet. I was wondering if there was a way to compile these drivers in a Netinstall (preferably the wireless, but wired if necessary)?
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Oct 27, 2010
I am trying to install Squeeze on a HP mini netbook. I have been trying to make a USB to netinstall Squeeze and cannot get it right. I cannot get past the message
SYSLINUX 4.02 debian-2010.............. on booting.
I have tried to make the netinstall usb from this
[URL] dInstaller
I am also trying to understand this
[URL]
I have also tried using Unetbootin. Nothing works so far. Some simple steps to make a workable USB.
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Dec 16, 2010
if debian lenny is installed using a netinstall cd would it contain a desktop environment if no internet connection is available at installation?
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Dec 18, 2010
I have internet connection - you need to open a browser & in the login screen enter your user name & password to get connected. The connection is via a ethernet cable. I have the netinstall cd for debian testing. How to connect to internet & get debian testing installed.
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Mar 15, 2011
When I netinstall debian squeeze an asus netbook using using Unetbootin usb stick, at the end I am asked if I want to install grub on MBR. I agree, yes, but on booting I find that the netbook has not grub. I go back to usb stick that stole my grub and I use it to boot. I go to sunaptic and install grub, still nothing, the netbook won't boot without the usb stick.
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