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

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1answer
113 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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0answers
57 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
77 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
52 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
57 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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0answers
226 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 ...
0
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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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0answers
21 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.
6
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1answer
128 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
70 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 ...
1
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1answer
83 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
vote
1answer
310 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
31 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 ...
0
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1answer
21 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 ...
0
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1answer
57 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
75 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 ...
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2answers
21 views

Why can I not sign in on Xubuntu?

Recently, I have installed Xubuntu, mainly to run servers (even though I used the one with the graphical interface). When installing, I enabled both Home folder and Disk encryption. When I was trying ...
0
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1answer
181 views

Automatically unlock other keyring than “Login” on login (not auto-login)

I have two keyrings: "Login" and "Default keyring". "Login" contains only a few keys, including the unlock password for "Default keyring", and is unlocked automatically on login (which requires a ...
1
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0answers
20 views

Same password for all computers?

I have 2 computers running ubuntu. Is is possible to use the same password with both of them? To be more specific: is it possible to sync the password change from one computer to another? I have ...
1
vote
1answer
57 views

Can't ssh without password to some machines, on a shared filesystem on a cluster, while it is successful on other machines

I am running on a cluster, where my home directory is shared to all machines. Some of the machines are RHEL and the others are Ubuntu. When I login without password from RHEL->RHEL or UBUNTU->RHEL it ...
0
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1answer
38 views

Lost the Admin Password - implementation

I have lost the admin password. Tried the procedure in the detailed thread How do I reset a lost administrative password? but I keep having the same answer. After entering the new UNIX password and ...
0
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1answer
19 views

cannot log on to Ubuntu 14.04

I have just finished loading on Ubuntu 14.03 now after putting in my password the screen goes blank then goes back to the password logon page
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1answer
56 views

How Random Are Pwgen's Passwords?

I'm looking for a good password generator and I came across pwgen. Are the passwords generated using the pwgen -s -y command truly random? And would you recommend pwgen? Also, I am aware that some ...
0
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1answer
66 views

Ubuntu not asking for password to log in

I am trying to lock my system, but it seems like though it is locking but it is not asking for password to login. Even when I changed setting from Settings > User Account and rebooted my system the ...
2
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0answers
486 views

no passwd entry for user administrator

I am in a terminal session and try to su to the administrator account. I get a response of no passwd entry for user administrator. I can logout and login as administrator account just fine with the ...
1
vote
1answer
72 views

Sudo execute command in Pythonscript

I want to sudo a command from a pythonscript without hardcoding my password in it. The Pythonscript is part of a webservice on Apache2. Since it is part of a webservice, asking the user each time for ...
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2answers
164 views

parsing `/etc/passwd` to find root user, and whether user can run interactive shell

I want to parse /etc/passwd file to find out if the user has root privilege and can run interactive shell. according to UID 100-999 are reserved by system for administrative and system ...
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2answers
39 views

How to save SSH options and connections in Ubuntu?

I have at this time two remote machines to which I am connecting. For one I am using private key with passphrase, and another one I am using root password. Now, when I want to connect to machine ...
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0answers
21 views

Thunderbird does not start after setting master password

After noticing that I could just click a button to see all the passwords for my mail accounts I decided it would be good practice to set a master password. However when I try to start Thunderbird ...
0
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1answer
66 views

How to install OpenLDAP password check module in ubuntu?

We recently installed ppolicy module and the related things in our OpenLDAP instance for password policy, However, among them there was no way to set up something that does a password check whenever ...
0
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0answers
36 views

vpnc - How can I determine my group name and password?

I have downloaded network-manager-vpnc, and I want to know how I can determine what my VPN's group name and password is. I have a Windows machine that I can successfully VPN to - can I figure out the ...
1
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0answers
129 views

automatic login without displaying the prompt for username and password in Chrome

I am on Ubuntu 14.04.3 LTS. I wish to program a script that opens a browser window but bypasses the prompt for username and password and uses the already stored username and password to login ...
0
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4answers
59 views

What is the reasoning behind hiding characters when entering the sudo password?

When entering the sudo password, the • characters are hidden. Apparently the • are omitted for better security. They seem secure enough to me, and I don't see why they're not used. I think I'm ...
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0answers
19 views

Reset password Ubuntu 14.04 [duplicate]

I'm trying to reset the password on Ubuntu 14.04 as is my sister's pc and she doesn't remember the password that she set upon installation. I've followed the guide that I've found here, appending rw ...
0
votes
2answers
60 views

I do not want to be asked for a password after being inactive

Every time that I come back to my computer after being inactive (i.e. I am not in front of the computer), Ubuntu is (are?) locked and I am prompted for a password. How to disable this? Note that I ...
0
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2answers
53 views

Password protect application without using sudo

I have an unusual request. I need to put a password on an app but I need the app to run at the user level (not Sudo or SU). Is there an easy way to do this?
2
votes
1answer
78 views

After upgrading to Ubuntu 14.04, home folder remains encrypted, and the password doesn't work

Last weekend I upgraded Ubuntu from 12.04 to 14.04. After the upgrade I logged-in using my old user and password, and I noticed that my home folder is empty, except encrypted files (I logged-in using ...
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0answers
11 views

How can I set two passwords for one account? [duplicate]

It would be great if I have two passwords to my account, so that if I forget one, I can still login without much trouble. Is it possible to do this? By "two passwords" I mean two login passwords...
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0answers
28 views

Multiple solutions for login problem

Same problem others have. Forgot password. Changed password using Sudo passwd, but Home directory was encrypted, so now when I login the ecryptfs and home directory will not mount or decrypt. ...
0
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1answer
49 views

password invalid 12.04 when tryin to log in for the first time, cant get past login screen

i installed Ubuntu 12.04 on my computer, to boot up alongside windows. I did this through Wubi Installer, When i try to log in, it says that my password is not valid. I have reinstalled it a couple ...
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votes
2answers
60 views

New user, new computer: system asked a password to uptade

I'm a new user, recently bought a new machine with Ubuntu. It's my first time with this OS. The first task I tried to do was update the system. I was asked about a password, but I don't know any. ...
0
votes
1answer
47 views

Password problems without setting one up

This might be a duplicate, but I didn't find any answer that fixes the problem. I have recently installed ubuntu 14.04 LTS and did not create a password for logging in. Now, if I try to use "sudo" ...
0
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0answers
12 views

login on shell with multilingual password

I have tried to find a solution but of no avail. I keep a non-latin password (hindi language) for my ubuntu login. It works great for graphical interface. However, I can't seem to find a way of typing ...
0
votes
1answer
297 views

Permission denied on start-dfs.sh

I am trying to create a 2-node Hadoop cluster, following this guide. The one node is my Ubuntu laptop and the slave node, the 2nd one, is a virtualbox that also runs Ubuntu. I am doing in the master ...
1
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0answers
40 views

My password has deleted by me. What can I do?

I was looking to not enter my password when I am logging in, so I tried running sudo visudo and changed ALL=(ALL) ALL to ALL=(ALL) NOPASSWD: ALL. Which didn't work. So, I changed it back. Now, my ...
3
votes
1answer
27 views

Reset or recover GNU screen password

I have a server where I wish to run a process using screen. I start a screen using: screen -S <screen_name> Detach using ctrl+a+d. But when try to reattach the screen using, screen -r <...
1
vote
1answer
155 views

Need help with ESET NOD32 installation

I'm new to Ubuntu, a complete rookie. I'm using Ubuntu 15.10 64-bit. And I'm trying to install ESET NOD32 anti-virus on Linux desktop, the 64-bit version of course. I just downloaded the file ...
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votes
1answer
26 views

Configuring my device(atmel embedded board) only logging permission to me : deny all other users trying to log in

First I will explain my needs. I want to configure my device (Atmel Embedded Board), for log in without password through SSH. I Googled it and found out the solution for that. Now I can log in to the ...