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

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Where is a passphrase stored when I request “Remember until I logout”?

When you (with Nautilus or Nemo) access a resource that requires a passphrase you are presented with a dialogue that gives you the choices to forget password immediately remember password until you ...
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20 views

want to change password on ubuntu entirely in a single line with no prompt

echo somepassword | passwd --stdin someaccount does not work. Why not? I don't care that it appears in the process table for an instant or is recorded by process accounting.
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2answers
107 views

after installing Ubuntu unable to access as keyboard shift key not working so unable to enter pw

I have just done a fresh install of Ubuntu onto the internal hard drive of my laptop. During the process of installing Ubuntu, I clicked the option to encrypt drive, and entered the same password I ...
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0answers
9 views

Please Help! Can't log into root Ubuntu 14.04 LTS [duplicate]

I am hoping someone can help me out here. For some reason my system has stopped letting me sudo. I can log into the machine just fine. When I attempt to install a package or sudo -i, I get asked ...
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2answers
82 views

What is the name for root user?

Here is the scenario: Installing Ubuntu and when asked for root password, just left empty. Only entering the password for the normal user. Now, I want to connect to such OS remotely. I'm using ...
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1answer
44 views

How do I set a login password in Lubuntu

I thought this would be a common question but after searching for answers I couldn't find anything that addresses this exact problem. Anyway, I have an administrative password, so every time I want ...
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0answers
63 views

Cron using a command that asks for password

I was able to fix this by using the encfs -S option, this pulls the password from a file instead of prompting for the password every time the script is run. This is not very secure as the password is ...
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0answers
70 views

How can I limit user login to a certain number of password attempts? Ubuntu 15.10

So basically I want to be able to set it to time out after a certain number of password guesses. If this is possible, would this apply to sudo command attempts as well?
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3answers
101 views

How to prevent scripts/commands hijacking your session's cached sudo ability?

If I run a sudo command it will ask me for a password, however in that Terminal session for the next few minutes it will allow me to run sudo commands without asking me for a password as it will cache ...
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2answers
2k views

Make the root the only one able to change the passwords of all other users

For security purpose, I want only the root to change passwords for all the other users. This will be achieved if I set /usr/bin/passwd to 700. Now, if password ageing is enabled or first login is ...
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0answers
74 views

Unable to login to ubuntu 14.04

I have downloaded ubuntu 14.04 iso 32bit from ubuntu. I have made it to be bootable from USB. I have successfully[I guess] installed. Then it asked me my password. I have given the password which I ...
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0answers
41 views

Cifs Share keeps asking for password and is slow

I followed the directions here https://wiki.ubuntu.com/MountWindowsSharesPermanently to mount a windows share and it works as expected. Some issues that I am having is one it is very slow when I load ...
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2answers
94 views

Where can I find my saved wifi passwords on 14.04?

Not trying to accomplish anything nefarious, just wanted to connect my tablet to my girlfriend's home network. My laptop already has it saved (connects automatically), but I've forgotten what it was ...
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2answers
176 views

how to turn off password-less login for ssh?

I had setup password-less SSH login from my desktop to my laptop following the steps here. Now I want to turn off the password-less login so that when I ssh from my desktop to my laptop, it will ask ...
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0answers
20 views

WiFi Connection WAS automatic. It isn't now

I have Ubuntu 14.04 LTS and have been using it for a couple of months. Where I live, I use an institutional WiFi (eduroam, WPA/PEAP/Version 0/MSCHAPv2). For these past couple of months, I have had no ...
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0answers
21 views

How do I recover my Ubuntu password after changing my email address?

I lost my Ubuntu password. I have also changed my email address, so you can't send me anything to my old address. I can give you my old email address. How can I recover my Ubuntu password now? Thanks.
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0answers
70 views

Ubuntu Personal File Sharing: Wrong Username Password

I have a problem about personal file sharing system. First, I've created a folder on my home directory and I've shared this. But when I connect to this folder with my Android file manager, it's ...
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1answer
47 views

How to reset password Ubuntu from command prompt? [duplicate]

I want to update my system through this command: sudo apt-get update [sudo] password for jsr: But when I enter it, my system asks for password, but I don't remember it. How can I reset it?
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648 views

Reset Password in Windows 10 using chntpw and Ubuntu Live CD/DVD

I'm investigating about how to reset a Windows password. I found that if I use a Ubuntu CD/DVD I can install chntpw and then clear password from the SAM. This works for Windows 7 so my question is: ...
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0answers
235 views

Extract a rar file with a password that contains special characters

How can I extract a rar file with a password that contains special characters like ', ", `, /, \, ^, (space), !, ?, {, }, [, ], $, &, %, *, ~, :, ,, <, >, etc. Here is an example of PASSWORD ...
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0answers
141 views

What is the default username/password in Ubuntu 15.10 (For developer Edition x64)?

I downloaded Ubuntu 15.10 x64 (filename: ubuntu-15.10-desktop-amd64.iso). I want to try it out, so I write it to my USB flash drive using Rufus-2.7 on Windows 7. (During the process of writing, Rufus ...
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1answer
44 views

Find out which program requested authentication

I get password prompts like the one below every now and then. Usually they say: Authentication is required to change your own user data But I have not requested to do so. This often happens ...
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0answers
58 views

How can I set passwords over 8 characters in vncserver?

I was trying to set-up tightvncserver, but when I went to set the password to a basic 16 Digit string, vncserver responded with this: $ vncserver You will require a password to access your desktops....
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1answer
186 views

Can't reset or recover password in Ubuntu 15.10

I've tried everything listed in the "How do I reset a lost administrative password" thread and still have had no success. Are there any other techniques to try with Ubuntu 15.10? I've put the Ubuntu ...
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1answer
32 views

connect / ssh as root using a script without everytime typing the password

Is there any way to connect or ssh using a script without everytime entering the password from my machine. I tried ssh key-gen available here , it is working but when I want to run something as ...
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0answers
177 views

Store git credentials permanently and encrypted using a keystore in Ubuntu

Storing git credentials with the command: git config credential.helper store stores them unencrypted in a plain text under ~/.git-credentials. In MacOS and Windows, GitHub Help suggests to use ...
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1answer
49 views

Script: Invalid username and permissions denied

I am trying to write a script that creates multiple users from a text file and then add them to the group I created called "interns". I want to set a default password of "AIST2330PASSWORD" and then ...
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0answers
20 views

use a different password for the prompts

I installed Ubuntu for the first time since 2006, its awesome. So i installed and went for the encrypted home dir install, just for fun. Now every time i need to do something that requires sudo I am ...
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0answers
84 views

How to hide “Show password” in Network Manager?

I have a problem with the "show Password" checkbox. I'm trying to help a social school. The thing is that the "Wi-Fi Network Authentication Required" popup shows up some times. what is not a ...
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0answers
54 views

OpenSSH asks for root@hostname password instead of user@hostname password

So I have this other desktop PC, that serves as my server, primesystem and a laptop as my client, zerosystem that is connected to it. They both serve as my ssh-server and ssh-client respectively, and ...
0
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1answer
91 views

Browser asks for password several times .htaccess using subdomain

I have a private homepage and I want to password-protect it using .htaccess. This is what my .htaccess file looks like: AuthName MySite AuthType Basic AuthUserFile /what/ever/.htpasswd require valid-...
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0answers
38 views

Switching terminals with `Ctrl`+ `Alt`+`Fn` does not require password

Users on my computer have all password requesting options enabled, i.e. password is required on waking from suspend, and on returning from blank screen. The screen turns off after few minutes of ...
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1answer
132 views

Default username/password in preinstalled Ubuntu systems

I already searched around the web and couldn't find an answer. These days lots of computers (mainly laptops) come with Ubuntu preinstalled. Just out of curiosity, what is the default admin username/...
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67 views

Ubuntu password

Just installed Ubuntu 14.04 on a flashdrive via universal USB installer and works fine however its asking for a password on boot up. Looks like Ubuntu works for the user name. What is the password?
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3answers
90 views

Is sudo's bruteforce protection really helpful?

In this question: Why is there a delay when entering a wrong password? it appears that there is a 1-2 seconds timeout in sudo once it is given a wrong password in order to make cracking attempts more ...
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1answer
60 views

Locked Laptop blue blox enter password, completly locked pc

I installed ubuntu 15. 10 in an asus F553. I set up a super user or encrypted master password which apparently I can't remember. I was using the laptop, then turned it off, now when i start the ...
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0answers
66 views

How to prevent sudoers from changing the root password unless they know the current root user password first

I want to give a developer sudo access, but giving him sudo access would potentially allow him to change the root password and lock me out of the server. I just created a demo account, added it to ...
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259 views

upgrade to ubuntu 15.10 login error

I upgraded ubuntu 14.04 to ubuntu 15.10. The upgrade was from update feature in the UI. I didn't see the 15.10 configuration/ set-up after install. After installation the ubuntu restarted. Now each ...
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1answer
53 views

how do i add a posward to Guest Login?

I am using Ubuntu 14.04 LTS 32 bit Configured operating System. Here i would like to ask two questions. 1. how can i set a password to Guest Login? 2.is there any possibilities also add passwords for ...
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23 views

Add this Password to your keyring

Image related to QuestionIt is very annoying when always Authentication request comes.I need to put always password to login into ubuntu.
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1answer
141 views

Unable to change password after expiry

When setting up a new Ubuntu 14 PC for a Standard User using a local System Admin account, I’ve used the following command in order to make their password expire after 30 days: sudo chage –M 30 [...
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2answers
52 views

My computer running Ubuntu crashed and doesn't remember my login password

My computer crashed and doesn't remember my login password. I have already tried resetting my password the way where you go in to grub but that didn't work. I would be happy with any solution even if ...
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0answers
77 views

Not accepting CORRECT password. But in Virtual terminal!

I am experiencing a strange problem with my Ubuntu: My laptop came with a factory installed (OEM) Ubuntu. I was able to set the password from System settings. It worked Perfectly well for a week, But ...
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0answers
15 views

initialising ubuntu-8.10 on VB, password problem

brandnew to ubuntu, tried to install ubuntu 8.10 on a VB, Mac. Seems to initialise well, finally asks for login and password. Login name seems allright, but then, asking for the password it does not ...
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1answer
85 views

Can I have my ubuntu linux sudo/su password diffrent from my desktop login password?

Is it possible to have a desktop login password different from the password use for super user permissions like for example when you are installing software or running a command in sudo or something ...
1
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1answer
432 views

How do disable user list on login screen? (Prompt for username and password) Ubuntu 15.10

I was curious as to if there is a way to disable the user list on the login screen on Ubuntu 15.10, thus making it so that any user would have to enter their username as well as their password to log ...
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0answers
33 views

pam_unix.so password complexity requirements non-existent, or am I doing something wrong?

I am trying to set complexity requirements for password in Ubuntu with out of the box components, I don't want to install additional libraries for this if at all possible. What I want is to enforce ...
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1answer
24 views

Ubuntu 15.1 PGP not working

I am trying to create a PGP key on my ubuntu version 15.1. I find passwords and key and hit the "+" button to create a new PGP. I enter all the info, but after I submit my password no progress bar ...
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1answer
62 views

Forcing password policies - domain user management like Active Directory

Good topic: user management for 10+ ubuntu machines The goal: force globally password policies on Ubuntu Desktop machines (force password change, force password complexity). Would be good but not ...
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0answers
78 views

Ubuntu changed my passwords (login & KWallet) itself

Today I was unable to log in to my Ubuntu: password was changed itself (!). Yesterday (7 Feb 16) all worked OK, last password change was 20 Feb 15. I am the only user of PC and reseted the password ...