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

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1answer
153 views

Cannot enter password to start Ubuntu

I'm running Ubuntu 14.10 with the system disk encrypted with luks. When I start the computer, it shows the Ubuntu logo and asks to enter the password to unlock the disk. However, I cannot enter the ...
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0answers
13 views

How do I add a user in Ubuntu Core? (I can boot but cannot login or root)

I just got an instance of Ubuntu Core 15.04 running on a 16 gig thumb drive. I can boot two ways: The first is via recovery mode. This is nothing like Ubuntu's GRUB2 bootloader. Instead, it says ...
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1answer
30 views

Resetting my password through the root doesn't work

I went to the root, and then typed in "passwd username" except I used my username. Instead of giving me an option to change the password, it says "Usage: passwd [options] [LOGIN]" and then gives me ...
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0answers
68 views

I always get “Invalid password” on my first attempt to log in after long locks

At work I'm running Ubuntu 14.04 and after it's been locked for too long, my first attempt to login/unlock the computer will be met with Invalid password no matter how careful I am. The second ...
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0answers
26 views

Two factor authentication with password and USB Device for PostgreSQL server

I'm going to setup 2 factor authentication for my database server. I'm using PostgreSQL 9.4 DBMS on Ubuntu 14.10. I need to force two authentication methods for my database server. The authentication ...
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2answers
248 views

Login failure after new install

I recently installed Ubuntu 10.04 on my MacBook. I have it running smoothly on here, but when I used the same disk to install Ubuntu on a friend's Dell Laptop it isn't working correctly. After the ...
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2answers
54 views

How to stop administrative password change

It is extremely easy in Ubuntu to change the administrator password by using the recovery console and dropping to root. Is there any way to stop a root user from changing the administrative password?
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0answers
28 views

Can't log into my session even in recovery mode

I've recovered my session password in recovery mode (By doing enter recovery mode loadkeys fr mount -o rw,remount / passwd me wrote password in a paper ) But when I restart the computer, entering ...
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2answers
41 views

How to undo login password removal [duplicate]

I need help, I am very new to Ubuntu and am running 14.04 LTS. the problem was that my password login screen would prompt me twice for my password, I could not find a solution so I decided to remove ...
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0answers
25 views

Fail to log in to an encrypted home Ubuntu 14.04

As titled, I have problem in logging in to an encrypted home. I have encrypted my home (admin) directory some time ago, so I don't really remember whether I written down the passphrase, but one thing ...
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4answers
29k views

How do I turn off all the password prompts?

I've been using Ubuntu 12.04 LTS since release and am trying to figure out a couple things about all of these passwords and key-ring prompts that I've just been living with for a while. Ever since ...
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1answer
20 views

Let new user choose password on first login attempt

I know that fedora has this feature when creating a new account, you can set it so that when the user logs into their new account, they can choose the password themselves. How is this achievable in ...
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0answers
41 views

Password popup on USB unplug/replug “Authentication is required to change your own user data”

After upgrading from 14.04 to 14.10 when I unplug and re-plug a USB mouse (or switch keyboard/monitor/mouse with a KVM switch.) an authentication popup dialog appears asking for my password saying ...
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0answers
9 views

Ubuntu 12 Update Manager Password Failure

Networking expert, Linux noob. I've got Ubuntu 12 running in VMWorkstation on Windows 7. In the Ubuntu GUI, I click on the gear icon in the upper right corner of the screen and click "Updates ...
0
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1answer
80 views

ssh keeps asking for a password

I am trying to set up an MPI cluster, following Setting Up an MPICH2 Cluster in Ubuntu tutorial. At the end of step 7, it says that I should not receive a password request, which unfortunately is not ...
5
votes
1answer
704 views

Yubikey Two-factor Authentication Full-disk Encryption via LUKS

I recently acquired a Yubikey Neo - a nifty little hardware second factor authentication device. It's primarily intended for use with One Time Passwords, and the emerging U2F protocol - but since ...
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0answers
23 views

Ubuntu 14.04 How user domain access to local drives without enter administrators account password

I have installed Ubuntu 14.04 LTS on my Laptop. The domain is running Windows. I added my Laptop in domain. The problem is when I login to my laptop by user domain and I want to access to local ...
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0answers
28 views

Linux full disk encryption password prompt completely unreadable

After a few updates ago , my computer as it boots up and asks for the hard disk encryption passphrase the menu is completely unreadable. This doesn't bother me too much, but I am curious if there is a ...
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1answer
962 views

How to enable log in administrator password?

I have enabled my administrative password but when I start my computer and just click on administrator it login in without asking for a password. I want it to be that whenever I start my computer it ...
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0answers
28 views

Trouble installing Keepass2 Sync Plugin

I have been a user of KeePass for a long time. Until a few years back, I had only one desktop, and KeePass seems to take care of my password management very well. Now I use multiple devices. What I ...
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4answers
9k views

Installed perfectly but password not working for login or authentication

I installed Ubuntu on an old XP machine (replaced XP with Ubuntu) and it seemed like it went well... Until I tried to download and install the suggested updates! The password I set during ...
2
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2answers
44 views

Lock individual application's interface

Can I lock a particular application's interface without locking the whole screen? It would be very useful at work to be able to leave certain applications open when leaving my desk as colleagues often ...
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0answers
7 views

no known authentication password [duplicate]

i am asked to enter a password as authentication to add new updates or info to my computer,when in fact i do not know of any since the initial install was not done by me and the guy who installed does ...
2
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1answer
89 views

Hadoop in Ubuntu : Unable to create Passwordless SSH

I am learning Hadoop and trying to create the passwordless SSH following the procedure in define in the Book : Hadoop: The Definitive guide Configuring SSH Pseudodistributed mode is just ...
0
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2answers
5k views

Want to remove Unlock login key ring when no keyring directory is there?

Recently I lost my root user password. So I had reset it using the Recovery terminal. Now whenever I login, the Ubuntu shows a dialogue box with unlock keyring. I already tried for deleting the ...
0
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1answer
24 views

MySQL Login Error

I recently installed mysql-server on my Ubuntu 14.04 LTS computer and was able to log in only once. I didn't change any passwords or user information but now when I try and login it keeps throwing ...
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0answers
29 views

Password promt twice at Log In screen

I am experiencing a problem when logging into my account. I’m using Ubuntu 14.04 LTS. The scenario is when I turn on my computer the Log In screen pops up as it should, I enter my password and it ...
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0answers
35 views

Black screen after inserting password in login Ubuntu 15.04

I have seen lots of open threads about this problem, but nothing specific on how to solve my own problem. I run Ubuntu and the loading screen is normal, the login screen follows and the drums are ...
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3answers
1k views

SSH asks for password

I have already : Installed the server Generated the pub/pri keys with -P "" Copied the id_rsa.pub to authorized_keys ssh localhost > answered "yes", copied to known_hosts tried ssh localhost >> ...
0
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1answer
271 views

google.com requesting password?! Is my router / firefox / computer infected?

When I type "google.com" or "http://google.com" into the address bar in Firefox I end up with the following screen requesting some login and password. When I try the same in Chrome or Opera, I get ...
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0answers
52 views

Problem with Ubuntu 15.04 Install switched encripted areas of of my main disk

During install the only area of my disk I requested encrypted was my home folder. What actually happened was home folder is not encrypted and the rest of the disk is encrypted by a blank password. ...
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0answers
41 views

Admin account directly login with no password required

Ubuntu 15.04 with admin "account + password" at the beginning of time every thing is OK and every time logging to the system it requires "account password" after approx. 5 days the system log in ...
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0answers
66 views

How to add and pass system password as a variable in a script

I have a script which asks for system/login password and pass that password to further processing. This is the gist of programm by which I am executing my script. read -s -p "Password: " password1 ...
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0answers
25 views

Ubuntu Password help

I installed Ubuntu using wubi it asked me to enter a password for my account . I entered the same password twice . When I booted ubuntu it asked for my username I entered it then it asked for my ...
0
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1answer
30 views

Password invalid [duplicate]

I tried the process recommended, but was unable to reset the Password. regardeless of what I typed, the results were always "root@jimmie-z62FM:~#". I tried adding or deleting spaces and would ...
1
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1answer
55 views

Set Login Password “unlock Login Keyring” Neither Old Or New Pass Word Work

What I did to cause the problem: Reset login in password on two desktop computers using the GUI at System Settings - > User Accounts: One computer went perfect, no grief what so ever. The other ...
1
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1answer
37 views

Automatically enter a pw for a bit bucket account?

I have a git repo on an ubuntu 12.04 machine synced with a remote bit bucket repo. When I do a git pull I have to always provide a password. Is there a way to store that PW so that I don't have to ...
1
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1answer
55 views

Completely unable to login

I've been trying to add more security to passwords, etc. I did the following things (in Ubuntu 14.04.2 LTS) in /etc/pam.d/common-auth, added (as first line) auth required pam_tally.so onerr=fail ...
1
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1answer
39 views

Why does a system update ask for my password?

If doing updates is safe and secure, why does it need my password? From what I have read so far, it prevents man-in-the-middle attacks also. So what vulnerabilities exists that a user should be aware ...
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0answers
20 views

Ubuntu in endless password asking loop [duplicate]

This is very strange broblem, I have never seen anything even close to this. I have ubuntu 14 (or so) which is put into old 2005's cheap laptop computer. It had worked well since now, even tough ...
1
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1answer
3k views

How to change password requirements?

I tried to change my Ubuntu password but it keeps saying my new password is not "Good Enough" even when it passes my company security requirements: At least 8 characrters At least one number At ...
3
votes
1answer
278 views

making login.defs active

I am attempting to apply a new password policy on my Ubuntu Server 12.04.1. I have edited the MAX_PASS_DAYS 30, MIN_PASS_DAYS 2, PASS_WARN_AGE 7 in /etc/login.defs. The new rules do apply to any new ...
24
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5answers
27k views

How to set a short password on Ubuntu?

When I install the Ubuntu, I set a short password(<4). Now I want to change the other short password by "passwd" or change passphrase on "Password and Keys" program, it needs a password >4 char.
6
votes
1answer
46k views

Samba and User Acount Passwords

Is it possible to tie your login password to your samba password? Ideally every 30 days, users need to change their passwords to login into the machine and if its possible, when they update their ...
0
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1answer
34 views

Can a user with ssh keys set their own password after logging in with keys without knowing their password?

I'm playing around with a script to create a user across a number of machines. I'd like to not know the users password at any time, but having the public SSH keys is quite acceptable to me. The user ...
0
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0answers
19 views

Strange issue with samba -

I've configured 2 samba server (ubuntu 14.04), which work fine on all systems a part from Win 8. (both servers are configured the same as they are acting as primary and backup) The issue is; I have 2 ...
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0answers
31 views

How to forget sftp password in Nautilus (none in seahorse)

I added the entry sftp://daniel@<somedomain> to my bookmarks in Nautilus. The first time it was accessed it asked for the password but never after that. I cannot remember which option I selected ...
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0answers
86 views

issues faced while upgrading Ubuntu 14.10 to 15.04

I am an Ubuntu user since 8.04 days and I have only a basic knowledge of Ubuntu. When I tried to upgrade feo 14.10 LTS to 15.04 using update option, my graphical ui does not recognize my password and ...
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0answers
48 views

Evolution keeps asking me for password authentication (gnome shell)

Every time I open my dash, I see the dash display as normal. But once I type into the dash search bar, I receive a request for password authentication for evolution. This is incredibly frustrating! ...
2
votes
1answer
81 views

sudo password in terminal not accepted

Assuming my login password is the one being referred, I cannot type that, or in fact, anything when password is requested. I read through the answer to an earlier question on this problem and tried ...