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

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1answer
24 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 ...
1
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0answers
13 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
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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 ...
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0answers
8 views

root psw in terminal mode no longer ok

since a couple of months I can no longer enter my rootpassword. the charactors have an other meaning ONLY when i enter these in terminal mode, during normal use there is no problem. How can help me ...
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0answers
13 views

change the password of phpmyadmin in ubuntu

I have installed phpmyadmin and I forget the username and password now I am trying to connect through web browser by typing url :localhost/phpmyadmin. and I am pressing root and password as root it ...
0
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2answers
40 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 ...
0
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1answer
14 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
0
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1answer
18 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
26 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
22 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 ...
1
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1answer
44 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 ...
1
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0answers
34 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 ...
0
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1answer
17 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 ...
2
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1answer
70 views

Is it possible to add a GRUB profile to auto-login an user and start a script (15.10)

I have a 15.10 64bit machine with multiple user accounts. Normally, I select Ubuntu in GRUB, it boots and shows me the login screen, I select an account, enter the password and start my applications. ...
2
votes
2answers
185 views

Where does NetworkManager store WiFi passwords on Ubuntu 15.10?

I had previously learned that NetworkManager stores WiFi passwords in /etc/NetworkManager/system-connections/<wifi name> file. But in my case on Ubuntu 15.10 I can't find any password in that ...
0
votes
2answers
24 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 ...
0
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0answers
7 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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2answers
28 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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0answers
11 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
31 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 ...
2
votes
1answer
40 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 ...
0
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0answers
32 views

fails to recognize login and password [closed]

I am trying to install ubuntu 13.04 on a windows xp platform using wubi and have entered a username and password but when ubuntu comes up it does recognize my username or password --- can anyone help ...
0
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4answers
52 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 ...
0
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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
1answer
109 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 ...
0
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2answers
43 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?
0
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2answers
44 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
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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...
0
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1answer
25 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 ...
0
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0answers
20 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
votes
1answer
23 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
10 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 ...
34
votes
5answers
38k 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.
1
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0answers
39 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 ...
0
votes
1answer
41 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 ...
0
votes
1answer
141 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 ...
3
votes
1answer
18 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 ...
4
votes
2answers
28 views

Passwordless SSH only works when I'm already logged in on SSH

So I set up passwordless ssh using the following: How can I set up password-less SSH login? After setting this up, I'd expect that I wouldn't need a password to ssh. My issue is that on my first ...
1
vote
1answer
53 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
22 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 ...
0
votes
1answer
10 views

There is no dialog box to input password for users other the main user

I recently installed Ubuntu 15.10 (Ubuntu MATE) and created a main account, 'rwabuhesi' from which I created another one, 'qulay'. From the terminal, I can log into both accounts and even move files ...
0
votes
1answer
37 views

What is the default password for the `tomcat7` user on my system?

I'm on Ubuntu 14.04 and I installed Apache Tomcat 7 via sudo apt-get install tomcat7 and without editing any configuration I can start and stop the service tomcat7 successfully (localhost:8080 ...
0
votes
2answers
357 views

ubuntu 14.04 cannot log in, keep going back to password

I have dual win8+ubuntu 14.04. havent used ubuntu for a while. Today I found I am not able to login. I typed the corrected password and it keeps going back to require password after a flash. Tried ...
0
votes
1answer
393 views

How to change password complexity requirements in Ubuntu 14.04LTS

I am trying to setup some OLD laptops with Ubuntu 14.04LTS at an elementary school. I would like a simple password for the students to type but the password I am choosing keeps failing password ...
3
votes
1answer
50 views

How to make GDM have a limit of incorrect password attempts before action is taken?

I am currently running Ubuntu GNOME 15.10 with GNOME 3.18, though I used to (a long while back) run Windows 7, and though Ubuntu is better in most ways, there is still a feature lacking or at least a ...
2
votes
0answers
101 views

Password in WiFi hotspot in Ubuntu 14.04 LTS not working

I am using Wired internet. Want to create a WiFi hotspot using an USB Wireless router. I tried all the possible way discussed here in AskUbuntu like: Followed step by step several times according to ...
1
vote
1answer
203 views

I forgot my localhost root password

I installed Hadoop on my machine. To start it, I was logging in as the user named hduser. I connected to the ssh port using ssh localhost command. Then I went to the bin folder of hadoop to start ...
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votes
1answer
45 views

password working only in text mode but not in XWindows mode

I was trying to install Nividia GTX 950 M driver. For that i need to do Ctrl+Alt+F1 and then stop XWindows(sudo service lightdm stop). It got stopped and then i started running the installation of ...
0
votes
1answer
46 views

Ubuntu 14.04 LTS cannot login 'invalid password' (not redirect loop)

I updated it, and while logged on I change my password, restarted the computer, and could not log back in. How to change password from guest account? I can't download anything, I tried ctrl+alt+F1 but ...
12
votes
4answers
34k views

Find the password for the currently connected wireless network

I want to find the password for the wireless network that I am currently connected to (and I entered the password when connecting to the network). How can I do this in Ubuntu?