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

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0
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0answers
14 views

Generate decryption key for manual recovery

I'm new to Ubuntu. I'm just learning Linux now. I did try to find the answer first before posting, but could not. Got lots of stuff on encryption, but not the answer I needed. I installed Ubuntu ...
0
votes
1answer
21 views

Input/output error on /etc/shadow

the file /etc/shadow seems to be corrupted as every time I try to remove it throws an input/output error. Now this is a problem because it contains my passwords and I get login without it. Anyone now ...
1
vote
0answers
56 views

How to change forgotten password without bios ?

When I logged in today on my laptop and tried to do something in konsole it asked me for my password. So i typed in my password like 100 times and it keeps on saying that It's incorrect. It worked ...
0
votes
2answers
61 views

How can I avoid entering my password for everything? [closed]

Its getting really annoying having to use my password for everything from opening my internet browser, to doing anything in the terminal, to installing any sort of software etc. Is there a way to ...
0
votes
0answers
20 views

Changing terminal login prompt with ncruses

I have a Ubuntu server with no DE that I want to replace the regular login prompt with a ncurses based login. How would I go about doing that? Below is a link to a program that I'm going to use to ...
0
votes
1answer
159 views

Missing password-asking dialog popup on session via VNC-SSH

I've almost got to have a remote Ubuntu Desktop working exactly as id it was a local session, but still can't solve a little issue wich is driving me crazy. I have a remote machine with Ubuntu ...
9
votes
5answers
78k views

How to change root password in ubuntu?

I am trying to change root password in my Ubuntu system. This is what I did: ashot@ashot-desktop:~$ sudo passwd root passwd: Authentication token manipulation error passwd: password unchanged ...
-3
votes
1answer
93 views

Enabling root privileges permanently and have no password

I want to enable root privileges permanently so that, for example, I never need to type sudo. I also want a blank password. I found a thread addressing this with link Always Sudo Privileges. Exactly ...
1
vote
1answer
4k views

SSH: Permission denied, please try again. While tryng to connect to remote 12.04 server

I'm having quite the head ache because of this. The day before yesterday I rented a VPS at atlantic. They provided me with vnc and root's ssh credentials. I could only login through a VNC viewer ...
1
vote
1answer
141 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 ...
6
votes
2answers
424 views

Standby password

My problem is that every five minutes my screen is getting dark and then asks me for a password. How can I turn off the password request after computer's standby wakeup? Please show me where I can ...
1
vote
1answer
98 views

Get Wifi Password Into Ubuntu Touch

So tonight I flashed my Nexus 7 with Ubuntu Touch, however I'm having an issue. My wireless is protected with a 63 character WPA2 password. Whenever I try typing it in manually and hit "Connect" ...
1
vote
1answer
25 views

Using variables as paraments for commands in a bash script

I currently have a bash script which I can simply double click to remote desktop into my institution: #!/bin/bash xfreerdp -f -u myusername -d campus -p mypassword --ignore-certificate website.com ...
1
vote
0answers
32 views

$password with ssh chpasswd

I've a problem with "ssh chpasswd" .. I need to implement the "$password" of register.. Eg.. I've this code.. echo $ssh->exec("sudo sh -c 'echo $user:test | chpasswd'"); When the script is ...
0
votes
0answers
26 views

Root User Logging in Without password

I have a 2 user accounts in Ubuntu 14.10, one is administrator and another one is normal user. At the time of installing the Ubuntu 14.04 I have given the password to administrator user.After that ...
1
vote
3answers
56 views

Why is sudo by default asking for the password of the user that ran it?

I'm wondering why does sudo actually NEED the password, when the user has already logged in? The fact that the user has managed to run sudo means that the user has passed authentication and is ...
6
votes
4answers
9k views

Administrator account with no password is unusable

I tried removing my administrator account's password. Now that there is no password set for it, I cannot put a new one nor do any actions which needs administrator privileges. I tried different fixes ...
-1
votes
0answers
32 views

Enforce password rules with /etc/pam.d/passwd file

I want to enforce some rules for password. So i changed, /etc/pam.d/passwd file. $ cat /etc/pam.d/passwd ##### # The PAM configuration file for the Shadow `passwd' service @include common-password ...
0
votes
1answer
82 views

Ubuntu Live 14.10 Default Password for ubuntu-Desktop-next

Hi am trying use try ubuntu with live cd, and i could see there is default username called "Ubuntu-desktop-next" may i know the password for that.
0
votes
0answers
15 views

After suspend unlocking failes: password only accepted after some waiting… an sssd problem?

I'm having trouble with suspend in Ubuntu 14.04. First let me try and describe our situation here: we run Ubuntu 14.04.2 with lightdm and a choice of DE's (KDE, Gnome's, XFCE, Unity). We use ...
0
votes
1answer
15 views

Easing entry of sudo password for remote hosts?

I'm logging on to remote hosts via SSH to do server admin. The login uses a cert but I login as a normal user (ssh -p $PORT $USER@$HOST) and use sudo to run commands. It's a pain to have to enter the ...
14
votes
3answers
30k views

How to change/disable password complexity test when changing password?

I know that it is a "bad" idea, I know that it is not secure, I know. I searched the net for an answer and all I saw was whining that it's not good. But I like using Linux because it lets me make the ...
5
votes
4answers
157 views

Cannot unlock session if user has no password

I created an account with no password for my 3 year old child. After some time of inactivity on that account, the session locks. Then I cannot unlock the session. Trying to unlock with an empty ...
4
votes
1answer
72 views

Wireless password not protected

This might be a security issue. In Ubuntu 14.10, 14.04... under -network connections/edit wi-fi/wi-fi security - my wireless password is shown and it can be seen by anyone who can access my ...
3
votes
0answers
84 views

Lock screen asks for password on no-password account

The Ubuntu lock screen always asks for a password even when the account does not have password. In my opinion, it should be exactly like the login screen: a button "connect >" for accounts that don't ...
0
votes
0answers
8 views

lost admin password and no fix after set up i recovery [duplicate]

I have turned on auto log in because i did not want to enter my long password every time i log in to my computer. now it does not recognize my old password to install and update items. i did password ...
0
votes
0answers
8 views

Changing the backup/restore password

I forgot the password I was using for automatic backups and restore. I don't need to restore right now. I just want to set a new backup password for the next time the system backs my file up. ...
0
votes
1answer
68 views

How do I reconnect my WiFi without entering the superuser password?

The connection to my Mythbuntu system was recently changed from cable to WiFi. Now sometimes the computer disconnects the WiFi-connection and prompts for authentication. How do I tell Mythbuntu to ...
1
vote
0answers
107 views

Authentication not working properly after using fingerprint authentication in Ububtu 14.04

I installed fingerprint-gui to use fingerprint scanner in my thinkpad. The commands used were sudo apt-add-repository ppa:fingerprint/fingerprint-gui && sudo apt-get update sudo ...
2
votes
0answers
33 views

Getting “No key available with this passphrase.” when trying to add a new LVM encryption password

I am getting "No key available with this passphrase." when I try to reset the password for the LVM encryption on my Ubuntu box. I have tried the following commands: sudo cryptsetup luksAddKey ...
1
vote
1answer
34 views

repeatedly asked for admin password

With a brand-new Ubuntu 14.04 installation I streamed the third period of a hockey game last night. It was literally the first time I used this new computer. It connected to wifi no problem, and ...
-1
votes
1answer
91 views

Unable to reboot into recovery mode and reset password

Someone else installed ubuntu on my laptop, as a result i dont have the admin password. i'm unable to do anything without it. so i googled it, found some procedures and tried to follow that. but ...
1
vote
1answer
74 views

gksu firefox & password

I have a launcher with gksu -u someuser firefox Why does this launcher require root password instead of the password of the currently logged-in user. The password window has the following message: ...
5
votes
4answers
8k 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 ...
1
vote
1answer
35 views

How can I reset ssh passwords in nautilus?

I've logged to my home server using ssh from Nautilus. I selected the option "remember forever" (or something similar) after typing my password. Today I had to change my server's password. Now I can't ...
0
votes
1answer
31 views

How do i reset my password [duplicate]

Ok so i tried to reset my password using these instructions Hold shift during start menu to open up the ubuntu menu Hit enter on recovery mode Hit enter on root After that this appeared like it was ...
0
votes
0answers
27 views

Intermittent problems with desktop environment in Ubuntu 14.10

I am using Ubuntu 14.10. The problem is that sometimes (maybe with 20% probability), when I turn on my PC, I face these bugs: Dummy output/no sound card detected If I lock the screen and try to ...
1
vote
2answers
342 views

Ubuntu 14.04.2 cryptsetup failed on boot

I decided to reformat my hard drive and install a clean copy of the newly released Ubuntu 14.04.2 with full disk encryption (incl. LVM) and I chose a strong password with special characters which ...
0
votes
1answer
42 views

can't type my password in terminal [duplicate]

I am trying to install torrent, so I typed some commands like: sudo apt-get install libssl0.9.8:i386 after this command: [sudo] password for shiddhant: here is the problem comes, the cursor was ...
0
votes
1answer
23 views

Why does the password for a zip-file not work?

I've tried to unpack a password-protected zip-file on Ubuntu 14.04. Although I am absolutely sure the password I use is correct the built-in unzip-function gives an "unknown error".
0
votes
0answers
354 views

Ubuntu 14.04 no password box after waking up

Opening the lid after suspension - the lock screen shows as normal except the lack of password box. When on dock, the user/password container & unity symbol swap between screens as mouse jumps ...
2
votes
1answer
509 views

How do I enable password request after hibernation in lubuntu 14.04?

I'm running lubuntu 14.04 and have finally managed to enable hibernation. However, after hibernation, the system will start without asking for my password. I've tried several advices posted for ...
68
votes
1answer
79k views

How do I run specific sudo commands without a password?

On one particular machine I often need to run sudo commands every now n then. I am fine with entering password on sudo in most of the cases. However there are three sudo commands I want to run ...
0
votes
1answer
18 views

Why kde keep asking password when i use chrome even if the password is not saved?

I have not saved the password of a website, but kde keep asking me that password and I find this annoying. :|
0
votes
0answers
17 views

Kubuntu 14.04 - NIS user are not requested for password

Good day, We are using kubuntu 14.04 in a NIS + NFS setup , user login from NIS is use to login to workstation machines. My problem is that whenever a NIS user log's out. Any one can just type back ...
0
votes
0answers
12 views

How do I set the root password on an uninstalled dvd version of ubuntu

I haven't installed ubuntu on my pc. I am using a dvd version of ubuntu. I've tried to set the root password using the methods explained when you answered other users questions about resetting root ...
10
votes
2answers
2k views

How secure is KeePassX?

I have hundreds of passwords, since I use a different random one for each website/service. They are all generated & stored with KeePassX, which can be synced to different computers and my android ...
0
votes
2answers
109 views

Forgot wifi router password [closed]

I have a 3G WiFi router got from my friend. I accidentally changed it mode as a 3G router. Now my SSID had changed and my password is not working. cannot access web interface to change the settings. I ...
0
votes
0answers
35 views

Removing the encryption password at boot

This question has been asked a lot, but I still don't know the answer to it. Is there a way to remove the password at boot? I have processes that start up when the computer boots up, and when have to ...
0
votes
1answer
48 views

LightDM does not ask for login password

I have an auto-logged in non-sudo user called "screen". I have a passwordless sudo but login-protected user called "support". I'm pretty sure this was working fine before, somehow maybe the latest ...