Questions regarding passwords and the use of them. Where and when it is needed for system security.

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4 views

Dropbear: Can't use regular passwords to login

I'm using dropbear to unlock my lvm/luks partition on a remote server during system boot. I've added dropbear to initramfs and I can connect and authenticate using public keys. But unfortunately, ...
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0answers
12 views

Cannot access my system after setting a Grub password

Since I realised that GRUB is not password protected, I have been slightly concerned, as any can get access to my system configuration. I decided to act on it, and followed the instructions in this ...
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0answers
17 views

My update password is no longer recognised by Ubuntu 16.04 64

Good day For some reason Ubuntu has decided, after an update and when I received notification of a new update, that it would not recognise my update authentification password. So unable to update. ...
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0answers
15 views

Password Requirement

I'm running Ubuntu 14.04 LTS and also hate the constant password requirement. It seems that when I installed this, I was asked if I wanted that option and I said no, but now I seem to be stuck with it!...
1
vote
1answer
18 views

Set password for specific workspace

I would like to set a password for a specific workspace W so that when I (or someone else using my user session) tries to switch to that workspace, they can't do so unless they know the user password. ...
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0answers
20 views

Ubuntu 14.04 Can't Login even after password recovery (GUI / TERMINAL)

suddenly i can't login into Ubuntu 14.04, not via GUI and not via Terminal. i already tried to use recovery mode and reset the password with the root user with the following commands: mount -rw -o ...
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0answers
18 views

Ubuntu One: can't log in anymore

I changed my password for Ubuntu One a couple of days ago, after the hack on Ubuntu Forums. Logging worked fine on the forums, AskUbuntu and Launchpad. But all of a sudden I can't log in anymore on U1 ...
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0answers
26 views

Can I use the Touch ID on an iPhone to unlock Ubuntu?

I have my iPhone next to me - and it's quicker to touch my finger to the Touch ID than type my password. Can I unlock my computer with my fingerprint via my iPhone?
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0answers
12 views

Hp compaq 6510b with Ubuntu & Windows Vista xp / locked out because lost Adim password [duplicate]

I had 2 hp compaq 6510b in 2010, my son needed one for school so gave him one.. He used it maybe 6-months and seen I was selling Blackberry tablets so I gave him that and got the laptop back. I just ...
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0answers
12 views

Restoring backup from another installation and myy Encryption Password for Dejadup does not work. Why, and what do I do?

I recently reinstalled Ubuntu. I was running Ubuntu MATE and decided to scale down to a stripped down version. I backed up all of my files to an external HDD and took a picture of my passphrase so I ...
0
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1answer
43 views

WiFi asks for password again and again

The Problem My WiFi network disconnects itself randomly and start asking for password. The password is already stored,I just have to click on connect. When I click on connect ,it remains connected ...
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1answer
29 views

How to achieve sudo privilege in shell script? [duplicate]

how do I can achieve sudo privilege via the shell script without entering the password? Example: [user@user Desktop]$ ./script.sh [user@user Desktop]# which command should I try on the script.sh?...
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0answers
23 views

Ubuntu 15.0 Administrator login

I keep getting a black screen that asks for Ubuntu administrator login and password I've tried every combo I have for this computer and it doesn't work. I can not get past this screen at all. Please ...
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0answers
22 views

Forgotten/not accepting password [duplicate]

Forgot my password, and can get no further with prompts. I've gotten as far as: root@blackbox:# but don't know where to go from there to access my computer. I keep getting "command not found".
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0answers
50 views

Problem with Ubuntu cloud image 16.04 on VirtualBox

I was trying to use Ubuntu 16.04 cloud image xenial-server-cloudimg-amd64-disk1.vmdk [downloaded from https://cloud-images.ubuntu.com/xenial/current/ ] on VirtualBox but facing two problems: ...
0
votes
1answer
26 views

How to change password using recovery console? [duplicate]

Im having a problem entering my password in the login, every time i login its says thats wrong. Can I change it via recovery console?
0
votes
1answer
24 views

evolution not accepting my hotmail password

I have been struggling for a while with evolution not accepting my hotmail account password for receiving emails. The sending of email is not a problem. I also have a gmail account which works fine ...
0
votes
1answer
18 views

Upgraded Ubuntu 15.04 and its going into login loop after that [duplicate]

Have tried other solutions posted on AU I tried CLTR+ALT+F1. It takes me to the login screen command screen. I logged in using UN & PW After that I tried many commands posted in other solutions ...
16
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3answers
1k views

Forgot passphrase (encrypted hard drive), how can I use my computer again?

I forgot my password for an old computer I have that is running Ubuntu 14.04. I encrypted the hard drive when I set up the computer. There is nothing important on the computer so I do not care about ...
1
vote
1answer
53 views

How to avoid password request for sudo for crontab scripts?

I need that a new user could execute sudo without any request of password, because this user has in crontab a .sh that uses sudo for some commands. I created a new user on my ubuntu server 16.04 x64 ...
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0answers
36 views

How do I get past my login screen?

When I boot up Ubuntu 16.04 LTS, I get shown my login screen. When I put in my password and press enter, I get a black screen that shows some letters for about half a second, then I am looped back to ...
-1
votes
1answer
41 views

Gnome keyring 11% cpu when opening chrome

I have little prolem that when open up chrome, gnome keyring starts to use cpu on 11%. If i start chrome from command line with google-chrome --password-store=basic this bug is not present. The ugly ...
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0answers
24 views

How to reset my password when i have never made one? [duplicate]

i just started using Ubuntu and i ran into a strange problem. when i was setting up ubuntu i did not enter a password. i just clicked on the always log in or no password needed button, something like ...
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0answers
12 views

Software Centre authentication on install not working

I'm attempting to install Chrome. I've downloaded the 64 bit .deb file and opened it in software centre. Upon attempting to install it asks me to authenticate. I only have 2 users on my system: root, ...
1
vote
1answer
21 views

Visudo - Change user without password doesn't work

I want a user to be able to change to another user without a password and any other root rights. I followed already a hint on http://apple.stackexchange.com/questions/82438/allow-sudo-to-another-user-...
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2answers
47 views

Prevent sudo users switching to another user, without the target-users password?

Sorry if the title is ambiguous, however I'm quite new to Ubuntu but have just set up a webserver running it with a group "developers" that are all sudo. At the moment Users can only login via SSH ...
1
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0answers
15 views

Replace kwallet with gnome seahorse

I have Ubuntu 15.04 and I have recently installed kde desktop. When I was on unity desktop the seahorse application was used to prompting me for main password at startup to unlock the keyring and let ...
1
vote
0answers
48 views

Trying to install Ubuntu to dual boot Windows 7

I am a newbie to Ubuntu. I have done 2 full installations of Ubuntu 15.04 on 2 PC's 100% ok and everything works. I have a Windows 7 Laptop and tried to install Ubuntu from a CD and could not find a ...
1
vote
1answer
27 views

Switched to GNOME, no password prompt on wakeup

After months of using Ubuntu I decided to switch from Unity to GNOME. Everything is working fine except it seems like some settings haven't carried over. When I close my laptop and reopen it, it doesn'...
2
votes
2answers
95 views

Enable password on lock screen

I have a problem with restoring the password request on the lock screen. During the installation of Ubuntu I specified the auto-login option, but now I want to re-enable the password protection. ...
0
votes
2answers
69 views

How to find my wi-fi password in ubuntu 16.04 LTS

Well, yesterday i wanted to connect in my wireless network in ubuntu 16.04 LTS , but figured out that i couldn't remember the router's password. First i check the router for the code in the down side ...
0
votes
3answers
72 views

Unable to find password on sudo apt-get [duplicate]

I want to install some apps. I did: $ sudo apt-get [sudo] password for .....: But I cannot install my apps!
3
votes
0answers
42 views

Unlocking at the lock screen fails

I have encountered a strange issue with my Ubuntu 15.10 install: Usually, I lock my desktop with Ctrl+Alt+L when I leave my computer, and when I come back, I enter my password and can continue working....
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votes
3answers
67 views

How to set up passwordless ssh for root account?

i am trying to follow the instructions here to set up passwordless ssh between root accounts (needed to use Ambari). However this involves ssh-copy-id user@machine and since user is root, when I try ...
0
votes
1answer
44 views

Prevent root from resetting a specific user password

Is there any way to prevent others including root account from resetting a user password? I'd like to protect my user account not to be logged in by others so that others can't see the mounted ...
1
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0answers
71 views

Login screen asks for username after removing and reinstalling lightdm

I have uninstalled lightdm by sudo apt-get remove lightdm by mistake but I installed it again by going to virtual console and using sudo apt-get install lightdm but the problem now I am encountering ...
0
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0answers
52 views

Ubuntu 16.04 - Trying to disable home folder encryption

I am trying to disable the home folder encryption on my Ubuntu 16.04. I followed this tutorial, but unfortunately something went wrong: http://www.howtogeek.com/116179/how-to-disable-home-folder-...
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0answers
31 views

Repeated prompt for wifi password without connection

My (old) laptop keeps prompting me for a password to my wifi. It does this repeatedly and does not connect even if I am sure the password is correct. I would like to state that I have no idea what I ...
1
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0answers
44 views

Ubuntu 16.04 login problem [duplicate]

I have problems with the startup from a USB flash. It asks for a login and a password and I don't know the login or password can anyone help? It writes ubuntu 16.04 LTS ubuntu tty1 in a prompt.
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0answers
30 views

Programs that require su permission dont work unless ran as sudo

I'm running Ubuntu MATE 16.04 with openbox as my DE. The programs that require the sudo password get weird errors when i try to run the action that needs it. For instance if i try to install a program ...
1
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0answers
31 views

What is the preferred way to store secret data on Ubuntu touch?

I am developing an Ubuntu Touch app which shall connect with an e-mail server. However, I do not know how to store the password so that it is safe, for example from abuse by people buying used phones ...
0
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0answers
37 views

Password Changes with Ansible (User Accounts)

I am having trouble changing passwords with Ansible. It might be my playbook. I need to change this password for specific users. The ssh-keys are the same in the authorized keys section. Not sure ...
0
votes
0answers
37 views

Reason why I am unable to login to ubuntu every time I upgrade the kernel

I am using xubuntu 16.04. Whenever any new kernel is available I upgrade my system using the command: apt upgrade But then when I reboot the system always shows authentication error after I type ...
0
votes
1answer
29 views

Why doesn't Ubuntu/Thunderbird save my PGP key?

I installed Thunderbird and followed the instructions from: https://help.ubuntu.com/community/GnuPrivacyGuardHowto to set up PGP. First it worked, but after restarting my system the next day, I wasn'...
0
votes
1answer
40 views

Forgotten password on compressed file

Two years ago, I did some data recovery for a client, and created a 7z compressed file with a password on the file. I have since forgotten the password i put on the file, the original hard drives are ...
1
vote
0answers
25 views

Disable numlock warning on lock screen for notebook

I own a notebook with separate number pad on the keyboard and running 16.04. On the login screen/lock screen, I see a grey warning triangle in the password input field telling me that NUM-Lock is on. ...
1
vote
1answer
39 views

MySQL does not accept password not lets me reset password by skip-grants-table, unable to login

I terminal I have typed: apt install mysql-server mysql-client It asked me for password and I gave it. Next I typed: mysql_secure_installation It prompted me for password. I am cent percent ...
0
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1answer
52 views

sudo problem. I can't write my password to terminal

so I was installing python on my laptop :~/Desktop/Python-3.5.1$ su root Password: ssu: Authentication failure` It didn't let me wrote my password. so I looked help and found that: gksu ...
0
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0answers
17 views

Unable to login using password on Ubuntu 16.04 [duplicate]

I selected the option of logging in to my user account (with administrator privileges) without a password. Now that I want to revert to logging in using a password, I am unable to do so. I have set a ...
1
vote
2answers
192 views

Sudo is not asking for password on Ubuntu 16.04

Ever since I update to 16.04 I notice whenever I use any sudo command the terminal does not ask me the password before executing the command,The command is directly executed.I am the admin and I have ...