Debian :: Password Hashes Under Debian?
Feb 21, 2011
By default, as far as I know, Debian hashes passwords using a single application of md5 and stores them in /etc/shadow. [EDIT: apparently true for at least some Debian 5.0.x Lenny installations. By default, Debian 6.0.x Squeeze apparently uses SHA-512 with a salt which is a publically known 8 char string. MD-5 is generally agreed to be much too weak to use for cryptographic purposes; SHA-512 is thought to be much stronger. Even better would be to iterate the SHA-512 "hashing" many times. See the last page for how to do this, and how to check that it is working.]
But the md5 digest/hash is said to be insecure; several years ago a double application of sha256 digest / hash was said to be much better. Is there a way to implement that in Debian Squeeze?
View 14 Replies
ADVERTISEMENT
Apr 26, 2011
The /etc/shadow file contains an id of $1$, $2$, $5$ or $6$ to show the encryption method used.A salt follows this,followed by the password hash.When a user is created and a password is set, a hash is RANDOMLY generated and used as the salt to the password hash. Everytime that user logs in, login checks /etc/shadow for the $id$ and salt and runs the password given by the user through the hash mechanism ($id$) using the salt in /etc/shadow.So basically does login look at /etc/shadow for the $id$ and salt to create a hash with which to compare to the /etc/shadow hash?question 2 - If my $id$ was $5$, which is sha256, how would i go about changing this? Like is there a shadow.conf or crypt.conf or something? Can i change it per user?
View 2 Replies
View Related
Jul 3, 2009
I've been trying to write php or perl code to generate the sha-512 password hashes in fedora. I've been unable to do the hashing which is encoded in the shadow file on fedora core 11. Does anyone have php or perl code which provides the hashing algorithm. (All of my attempts result in the encrypted hashing being longer than 86 character -- the length that crypt says the sha-512 should be)
View 3 Replies
View Related
Jul 7, 2011
I have a Windows domain with a proxy. I have an account that can use the proxy and the URL that points to the proxy.pac file. this might seem a stupid question but can anyone tell me how do I enter the username and password for my test Windows account so that Debian can authenticate it?
View 1 Replies
View Related
Jun 17, 2010
Our Security Admin left the company and did not supply the Debian GUI passwords,o I cannot logon to the server using the GUI. However, I can log in using something like putty.How can I reset the gui passwords.
View 3 Replies
View Related
Jun 30, 2015
Code: Select all:~$ su
Password: #Typed user password
su: Authentication failure
~$ su
Password: #Typed root password
su: Authentication failure
:~$ sudo su
[Code] ....
The file does open but with a warning in red saying i could harm my system. Had almost got everything configured just as like it, tried adding a custom action (open as administrator) to Thunar and my house of cards collapsed around me.
Debian 8 xfce, single user account, passwords and user names are single characters so it's a given there's no typing error.
Code: Select all:~# cd ..
:/home# cd ..
:/# mkdir -p /root/.local/share/
:/# touch /root/.local/share/recently-used.xbel
:/# exit
exit
:~$ gksu mousepad /etc/apt/sources.list
Got another window prompting me for password, gave "Incorrect password...try again"
View 2 Replies
View Related
Dec 14, 2010
I guess this might sound strange, but, I want to be asked all the time for either my user password or root password. I have searched high and low and all I can find is people wanting to disable asking for password. My guess is a majority of those users are ex-Windows users. I prefer to be asked as I feel it an added security tool. how to enable the system to ask for the user/root password everytime?
View 8 Replies
View Related
May 4, 2011
Want to set root password.i don't have any idea as from where to get a root password. as I have freshly install Ubuntu10. Sudo cmd is working out.How to go in single user mode in Ubuntu.
View 5 Replies
View Related
Sep 21, 2015
I cannot log on. I don't know if this is related, I was setting up for remote desktop, setup a password for the remote session. After rebooting, my normal user and password do not work and my rdp password does not work.
View 13 Replies
View Related
Jun 17, 2010
I have forgot my root password. how to create new password before booting.
View 9 Replies
View Related
Nov 29, 2010
I tryied to modify the root password, but instead of using the "passwd" command, i tried to use "usermod -p", without knowing what outcome exactly i would get. But since then, i can't log as root, neither with my old neither with my new password. And i can't install absolutely nothing on my machine.
Please, help me... i have a test next wednesday, and i can't work in my blueprint. In appendix, i've uploaded a print screen of the sequence commands, for you to be able to explain me this phenomenom and to tell me how to solve it.
View 3 Replies
View Related
Jul 1, 2015
I just did a net install of Debian Jessie in VMWare Player. I very much enjoyed the install. I chose not to install a desktop. I set the root password as root. And the user as paul/paul. Now I cant login in root, it says I have the wrong password. How would you resolve this?
View 13 Replies
View Related
Feb 12, 2016
I just set up my Debian 8.3.0 Jessie install a couple of days ago. Today I am having a problem carrying out a command in terminal. All I want to do at the moment is make sure my firewall is active. I log in and out of my computer using the password that I set when I originally installed Debian, and I use the same password in the package updater, but today it would not accept that password in terminal. Here is what I am seeing;
rocky@debian:~$ sudo ufw-enable
[sudo] password for rocky:
rocky is not in the sudoers file. This incident will be reported.
rocky@debian:~$ sudo ufw-enable
[sudo] password for rocky:
Sorry, try again.
[sudo] password for rocky:
How do I use terminal? What password am I to use?
View 14 Replies
View Related
Apr 8, 2010
After installation of Debian 5.0.4 when a window is shown to type the root password, after I have typed it and press OK, window is closed and nothing happen. I have verified that root password is correct, also I have reinstall Debian, but nothing is changed. Is there something to enable?
View 14 Replies
View Related
Dec 16, 2010
I need to make it so that someone who is using my computer, logged in with my user name, is prompted by a window in the GUI if they try to access a certain folder. Logging in with a different user name is not an option, so "chmod"ing, "chown"ing or encryption is out. I picture something similar to what happens when you try to access GParted, Synaptic Package Manager, etc. When you try to access those, a window pops up prompting you for the root password. The reason being is that my wife uses my computer, logged in as me. She doesn't ever log out and log in with the user name I set up for her because it's "inconvenient." She's also not computer savvy whatsoever. Also, my kids run around like maniacs and my 3 (almost 4) year old knows how to click on things and type without knowing what she's doing. This has resulted in some deleted/changed files such as spreadsheets with important financial data and or Cisco configs in them. I would like to leave my computer on without having to watch over it all the time. Ok, I know there are threads in various forums all over the place with people who have asked this question, but nobody ever seems to actually provide an adequate answer or solution to the original poster as far as I can tell. (I have been searching for two hours on Google with no results). I am running Debian Squeeze. I am not necessarily a "beginner" anymore, being that I can move around and do pretty much anything I used to be able to do when I used to run Windows (yuck), but this is definitely something that is a bit over my head.
There are a few requirements, however.
-No creating new users or having to log in as another user
-I do not want to simply "chmod -r", "chmod ###", or "chown" the directory
-I also understand you can encrypt directories, but that's not what I need.
View 14 Replies
View Related
Dec 21, 2010
When installing, I was not prompted to enter root password, but I was prompted to enter root name, user name and user password. Now it seems Terminal opens with admin permissions for user. This is not good.
View 9 Replies
View Related
Feb 15, 2011
I know there has to be a way to log in as root through the GUI. I reverted back to the old GDM to get this problem fixed but it took out packages that I needed and the problems started which required me to reload Squeeze via the 8 DVDs. I don't want any posts talking about the dangers of logging in as root as I know what the consequences are. I don't want to play in the terminal mode either. I created an Admin passwd during installation. how to link the Root name to the Password during log in.
View 10 Replies
View Related
Feb 7, 2010
I have to add my students as a user to a class-server to have them work on some TCP/IP-related questions. The server is Debian Lenny.
It would be easy if I could make some kind of script to add them, even with a standard password like 'abc123'. I want to show them the way FTP uses clear-text passwords as opposed to SFTP. Or the differences between telnet and ssh.
I know something about scripting with bash, but how can I add the same standard password to each user, without having to type it for everyone?
View 2 Replies
View Related
Apr 5, 2011
BackupPC usually just works. It backs up the localhost and another PC, both running Debian Unstable. However it stopped backing up the remote machine after the 22nd March.This correlates with updating OpenSSH.All I get is "Unable to read 4 bytes from Server".As suggested on the backupPC website I ranCode:sudo -u backuppc /usr/share/backuppc/bin/BackupPC_dump -v -f backupclientI was asked for the sudo password and then for a password for each directory that was to be backed up.The backuppc password was not accepted. The root password was.Could somebody point me towards a solution? Do I have to recreate the SSH keys?
View 2 Replies
View Related
Aug 30, 2010
Im trying to get into my system for first time in 2 years, i've forgotten all of my login info.. is there a back door..BTW ive never gone behind the scenes with this o/s before
View 5 Replies
View Related
May 12, 2010
I've forgotten the password of one my rar file. Knows someone a rar password recovery tool for debian?
View 2 Replies
View Related
Aug 30, 2010
I have forgotten my user password....HOWEVER I remembered the root password and am able, (after much fumbling about)to get into the machine. Is there a way of resetting my password? It obviously will not let me do so on the password-reset-screen as it requires the old password....
View 1 Replies
View Related
Aug 29, 2015
I never turn off my laptop so I never noticed this, Debian never ask me my user password ! I reboot my pc several time to be sure. However, If I lock the pc or hibernate, then Debian ask me my user password.
View 4 Replies
View Related
Sep 18, 2015
I tried to install Debian on my MyBook Live NAS following this [URL] ..... I was as happy as a sandboy when the SSH login finally was reachable after the process which went through without any errors or problems. But thats not the end - my password is not accepted and so i can't login.
In more technical terms here's my question: I chrooted into a newly debootstrapped system and changed the password using simple 'passwd'. Having done that on another machine i could find out that there are no locales/keyboard settings applied. My guess is that in this case the default US(?) settings and the keyboard layout are used.
Not aware of any issue here i entered a password containing special characters like " and ! and @. After investigating further I found out that in the chroot environment my keyboard layout from the host is used, which is bad because i do not know what environment was set in the originally MyBook system. All the action was done via SSH using kitty.
Disassembly would be the last exit which i would like to avoid. What keyboard layouts are used in chroot without locales set AND which one is used in the openssh login prompt? Is there a way to enter the password in a <ALT> + x format?
View 1 Replies
View Related
Feb 22, 2010
Before upgrading to Lenny there was no noticeable delay between entering a username & the prompt for a password when logging in via ssh. Now there is about a 5-second delay which is rather annoying. There is no delay when logging in through the Gnome UI. Anyone know why the delay is there? Is it something about ssh under Lenny? Is there a setting that can be changed?
View 1 Replies
View Related
May 17, 2010
How to recover a lost password from a rar file?
View 1 Replies
View Related
Jul 8, 2010
I have setup a debian server and it has been working fine but I moved it to a different location and not I am getting a problem. When I start the server up, it loads fine and loggin prompt. I can enter the username "root" without any issues but as soon as I press enter, I am not able to enter password. The cursor just blinks and i press enter, the server responds by saying invalid password.
I was connecting a USB keyboard and changed to Ps/2 but this didn't make any difference.
View 5 Replies
View Related
Aug 6, 2010
I am trying to reset the root password of Squeeze so that I may be able to update. I forgot it. I have followed the howto Reset Root Password without success. I am getting a root prompt but for some weird reason the root commands are not found. When I type passwd, I get, "command not found". Moreover, If I try reboot and shutdown -h now, both fail.
View 2 Replies
View Related
Oct 13, 2010
I set up a debian lenny in vmware on my windows machine. The network interface is set to bridged, so the virtual machine is connected directly to the university network i am connected to. I want to be able to ssh into the vm.I installed sshd via "apt-get install ssh", generated a key pair with puttygen and copied the public part to "/home/user/.ssh/authorized_keys", set rights to 600 and then tried to disable password authentication completely, following the "securing debian" documentation.this is how my /etc/ssh/sshd_config looks now:
# Package generated configuration file
# See the sshd(8) manpage for details
# What ports, IPs and protocols we listen for
[code]...
View 7 Replies
View Related
Mar 13, 2011
just started using Debian today and I would like to know how can I disable the user acount password, I am the only user on this computer so I would like it to boot strait into my account.
View 3 Replies
View Related
