Ubuntu :: Change Authentication Password Without Knowing What The Computer Wants?
May 9, 2011
Frustrated with ubuntu v11, i re-installed v10. At first my old authetication password worked. Then it stopped working and i can't make any changes because i don't know what word the blasted system wants. Am i locked out forever? Should i re-re-install v10 and everything else? or how i can change my authentication password without knowing what the computer wants?
I don't know that this post fits here, nor does it fit in "Applications." installing suse doesn't seem to give you the chance to name your computer. Now my computer is called "linux-0qvi" or something strange like that. I want to name my computer. Can I do this now without screwing things up??
Also, during install, there didn't seem to be an opportunity to make a separate root password. My first (and main user) account is now set up with admin rights, so I have to type in my account password every time I do something as root. Can I set a separate dedicated root password without screwing up my system?
I have a rather difficult problem. Every time I need root privileges and I am asked to authenticate (i.e. Update Manager, mounting a partition, etc), the password window comes up, shakes and immediately closes, leaving me with no chance to enter a password. What to do?edit: this is NOT the login window, just the little dialog that pops up when you need elevated privileges.
hello i am trying to change my password, but when i type in the new password i get this:"The password is longer than 8 characters. On some systems, this can cause problems. You can truncate the password to 8 characters, or leave it as it is."my question is what kind of problem could i get and how can i change so i have to log in every time i start the computer?
for christmas my parents got both my younger sister and i acer mini computers, model d250-1958. my sister was trying to change her password that lets herself as a particular user log in. somehpw she messed up the password and its not what she thought it was and now she doesn't have any way of accessing anything. i thought that there might be an ovveride system or a reseting trick. i've looked in the manual but cant find anything of the sort for either of the two options.
I am running a small ubuntu-server headless machine at home. It is configured with sshd so that I can connect from anywhere (if I have Internet access.)However, there is a thing: I'd like to have good security and disable password authentication, but I also want to be able to connect from a PC that I've never touched before. And no, I'm not prepared to type a 256 bytes password every time I type "sudo ..."
Here is what I thought: I could have a login (pieroxy) that has a moderately strong password and another user (pieroxy-ext) that has a very strong password (100+ chars.) I would use my regular account (pieroxy) whenever I have a key-based authentication and the other one (pieroxy-ext) whenever I have a password-based authentication to do. Then, I'll just su to "pieroxy" and I'm done typing the 100 chars pwd. In order to do that, I would need to be able to configure my machine so that password-based authentication is disabled for all accounts but enabled for my account that has a strong password (pieroxy-ext). Is it possible to disable password-based authentication on a user basis?
I had installed xp & ubuntu on my laptop hp compaq cq-40. Then i got this problem on su password authentication failure. I had alreadyformat and re installed ubuntu. But the su authentication still failure,
I am running Ubuntu 11.04 which I like very much (except for Unity - so I am using Ubuntu Classic).
Whenever I try to use "su - " I get Password Authentication Failure. I have checked Caps Lock (obviously) and have also tried resetting the password using "passwd" - but with no success.
If I use "sudo ...." with a command the password is accepted.
I have the same software installed on two computers but the problem only occurs on one - the other is OK!
I'm really new to Linux so this will probably sound like a pretty naive question to most users, but how do you change the root password?To install Java, I have to type # su into Terminal,which then asks for the password.What's weird is that when I start typing a password, no characters show up. I don't know if this is supposed to happen or not.I've found a bunch of different sites on the Internet that explain how to change the root password, but none of them seem to work for my specific work station.
I've got Ubuntu 9.10 64 bit. In the GRUB boot menu, I can choose to boot normal or in recovery mode (I'm led to believe older versions don't have this option).I've tried typing # sudo passwrd into Terminal, but I already have a root password set up apparently, so I can't change it there.
everytime i try to vnc to my box, it pops up the keyring authentication, which is obviously a huge problem when logging in remotely.how do i change my keyring password to match my login password?
I have a problem with ssh.I followed this guide:and no matter what I try, I still can't disable password authentication. I want users to require a private key to prevent from brute force hackers.
I've been using the Ubuntu desktop for a couple of years now, but I don't have much experience using the terminal.
I've just set up a home server using Ubuntu-server 64bit which will be headless and its main function will be a Mythtv backend.
I've worked out how to use VNC to send a desktop from the server to my laptop, but when I try to use any programs which require root privileges such as synaptic or the user/groups manager, the pop-up asking for authentication refuses to accept my password.
Is there a setting I need to change on the server which prevents remote users from getting root privileges on the desktop?
I have a weird problem with ssh, I am trying to ssh to a solaris server (sparc) running solaris 10 from my Ubuntu box and as soon as it authenticates the password it closes the connection. The box is located on a internal network in a wiring closet with no ability for me to access console but i still have a working ssh session from 2 days ago with what i'm trying to comb through settings and trying to resolve the issue. It also has 2 NIC's and I cannot connect to the either ruling out hardware problem. I checked if there is a limit of the number of active connections and the was no limit. I was able to connect mitiple session till 2 days ago (at one point i had on my machine 8 active ssh sessions to the same server).
Here is the output of ssh -vvv: Code: $ ssh -vvv -l user1 10.100.xxxxx OpenSSH_5.5p1 Debian-4ubuntu4, OpenSSL 0.9.8o 01 Jun 2010 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 ..... debug3: channel 0: close_fds r -1 w -1 e 6 Connection to 10.100.50.4 closed. Transferred: sent 1768, received 1688 bytes, in 0.1 seconds Bytes per second: sent 12077.9, received 11531.4 debug1: Exit status 254
I have a brand new install.I was doing some housekeeping and made a more sure password.Something went wonky and I got locked out.So I booted to root and changed the password.I'm back in the box now.But, my keyring password no longer matches my user password.So every time I want to do something I am asked for my old password.How do I change my keyring password to match my login password?
How can I force passwd to use a simple password?I want to change my passwd & delete passwd history (if stored).I plan on creating a Virtual Appliance that uses another password besides my testing password.
So after tinkering for a while, I was able to configure ssh for private/public key authentication and disabled Password-Authentication. In the past I had some issues with people brute force trying passwords/usernames so I want to avoid this, but I need some form of secure FTP that now doesn't work due to the aforementioned setting.
I have a Ubuntu 10.10 installed on my HP Mini 210, and is having a problemth authentication dialogs when applications requests for elevated permissions. As far as I concern, there are two types of them, one is the kind when you run anything with gksu where the background dims and a dialog pops up. Another type is when you try toinstall software through Synaptic and a dialog box requests for your password. I am having problems with the later one.
Whenever the authentication dialog box pops up, after typing my password and presses enter, or the Authenticate button, the password field disappears while leaving the authentication dialog on the screen. The Authenticate and Cancel buttons are still clickable, but they are not bringing any actions by clicking them. I would have to let the application to continue with elevated permissions by manually closing the dialog. There are very very rareoccasions where the dialog disappears after I click on authenticate, which I can say is 1 in every 100 times
Running Ubuntu 10.10 and I'm getting annoyed by the password authentication each time I want to do something. I find this more annoying than Windows 7 and UAC
When I am upgrading, installing something or doing something that requires me to be Authenticated by using my password I just type it in and hit enter. However, each time I just click return after typing in the password it does not work. The window accepts my password but thats it and the window just sits there until it times out a few mins later. For this to work properly I have to type the password and then use the mouse to click the Authentication button. Why is this? Is there a way to solve this so I can just type in my password and click return like I do with everything else?
I work on a product that have to start automatically an application. Running Opensuse 11.2 So in the inittab I have : 1:2345:once:/root/Velox/VeloxBoot.sh 2:2345:respawn:/sbin/mingetty tty2
In the VeloxBoot.sh, if I don't press any key, my application starts after a timeout. If the user presses a key I want to have a login prompt. Unfortunately, if I start /bin/login, I have a prompt with login, but once I enter my login, it does not ask for a password and it says wrong password
I have installed Ubuntu 8.04 inside windows and every time I go to the terminal and type "su" it asks me for a password. Well the password I set before the install doesn't work, it gives me an authentication failure. I thought that since it was inside windows it didn't set me as a root user. I go to user groups and I see my name there and then "root" above it, but its grayed out. Is there a default root password I can enter?
It seems that every time I try to dowwnload any apps kept on asking me for authetication and a password and later denied me the download. Where is the password it kept asking and should get the authecation automatic (Why to)? I'm new at this so pardon for my ignorance. Looking forward to use your os.
I am trying to set up remote login via SSH from my Mac to an Ubuntu desktop. Here is the error i am getting:
Code: Permission denied (publickey,password). I'll give background:
- Both computers are on the same network - I'm not using the default port 22 - I have successfully logged in using password authentication, so it isn't a firewall/iptables issue i don't think. I've already worked through those issues! - I haven't set up any tcp wrappers on the server yet, so nothing is being denied - I believe the server sshd_config file is setup correctly. I can post it if needed.
Here's debugging info: bash-3.2$ ssh localuser@xxx.xxx.x.x -v OpenSSH_5.2p1, OpenSSL 0.9.7l 28 Sep 2006 debug1: Reading configuration data /etc/ssh_config debug1: Connecting to xxx.xxx.x.x [xxx.xxx.x.x] port xx. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /Users/localuser/.ssh/id_rsa type 1 [Code]....
I set up a debian lenny in vmware on my windows machine. The network interface is set to bridged, so the virtual machine is connected directly to the university network i am connected to. I want to be able to ssh into the vm.I installed sshd via "apt-get install ssh", generated a key pair with puttygen and copied the public part to "/home/user/.ssh/authorized_keys", set rights to 600 and then tried to disable password authentication completely, following the "securing debian" documentation.this is how my /etc/ssh/sshd_config looks now:
# Package generated configuration file # See the sshd(8) manpage for details # What ports, IPs and protocols we listen for
I was hoping that someone could point me in the right direction. I just did an install and the os is up and running. During install, I set a root password and also set up a regular user account. The only option at login is the regular user acct. Needless to say, the os asks me to provide the root pw for just about everything I need to do.get an authentication failure. (I assume that this is the same as permission). I can find plenty of info on how to restrict access but nothing relevant to my problem. Just to rule out an install problem, I installed the os a 2nd time. I am very sure I have my passwords correct. One other thing to note is that on the 1st install, I used a different pw for root and regular user. On the 2nd, just to keep is as simple as possibl I used the same pw for root and reg user account. I am new to debian, but the distro that I have been using (slackware)