I have a problem with my ubuntu account. I am running 4 virtual machines, based on jeos-8.04 and I am using a public key authentication to login to my account (via ssh). This is not the problem, I have the key and the passphrase. But when I am logged in, I can't sudo, because I forgot the password for the accout.
View 6 RepliesI just installed Fedora 10 on my laptop 2 days ago. I dont seem to remember the password i userd for my username. Is there a way to reset or change the password? I cannot login to the system.
View 4 Replies View RelatedI'm seeing really bad user login format under a standard installation and am wondering why ubuntu does this as default. I have noticed that the graphical login for gnome sizes itself to accommodate a user's exact password length. This indicates to me that somewhere on the unencrypted part of a standard installation with user encryption contains at least some indication of the content of the password length which seems a security flaw even if not a complete hole, it majorly reduces the number of attempts a cracker would have to cycle through.
And that's assuming that *only* the length is contained. Furthermore it seems that it would be MUCH better to simply display the number of characters entered into the pw field and allowing the gui to expand itself from an fixed size as the field is filled out so the the user still receives visual feedback for entering characters. Either a simple character count display should be entered into the field or a 10 dot to new line so that one can visually quickly count the number enter by multiplying from a 10base graphical observation.
Second off, I'm trying to capture a user password on login (through gdm) such that I can re-use it for a service like Kerberos or AFS. The idea is that the user has to log in only once, and then I renew the tickets and tokens until they log out again. If there's a better way to do this
View 4 Replies View RelatedI opened my note book. I have installed XP, Ubuntu. When I boot, I select ubuntu os. But I forgot my Password. How to recovery or reset my password?
View 4 Replies View RelatedI am new to ubuntu and I've installed it but I didn't use it too much. Now I was trying to login into ubuntu but I forgot the root password. Can I login into ubuntu or change the root password. I didn't make any other user than the installation were asking me. If I try to reinstall the ubuntu, the setup will help me to choose the same partition (to overwrite on the previous ubuntu)?
View 3 Replies View RelatedI am using 10.04 ubuntu and I have forgotten my password to login to a ssh tunnel. It is not the root password on my computer. Is there any way I can find the password out, change it, or just start over and create a new one? I know it isn't a connection problem because I can't login to ssh from localhost either. I've tried reinstalling ssh too.
View 3 Replies View RelatedI've gave my son (7yrs) my old Eee PC 4G and he changed by istake the user password and forgot the new password.How can I overwrite the password?The only password I have is the BIOS Supervisor password...What can I do?Easy fix is preferred because I've no clue re Linux.Even formating and reinstall would be an option. (all data are on SD)I could boot from USB or SD but don't know what program I need and were to get it from
View 5 Replies View RelatedWe use a linux (centOS I believe) cluster for our research. My professor somehow forgot the new password he set for root, and now can't login as 'su'. What is the way (or best way) to reset the root password without damaging something. I don't know whether it's even setup for 'sudo'. What will the procedure with and without 'sudo'?
View 5 Replies View Relatedwhat does one do when he forgets the root password ? i still have a terminal logged in as root how can i change the password in terminall
View 2 Replies View RelatedMy goal is this: Allow a user to connect to a server via SSH with any login name or password without checking to see if that account exists on that server. Their account would be captured by a universal account say, 'generic_user', and then they would be directed to one of my python scripts with the username and password they supplied for initial login. At this point my script would capture their SSHD process ID and allow/deny their existence based upon a MySQL/Subscription check.
The part I'm having trouble with is with PAM and allowing the user to login with any credentials and be successfully authenticated under the generic account. Beyond that, everything is great.
I forgot my new password. I followed the guide on how to recover the password but in recovery mode my keyboard doesn't work, I have tried a usb and a ps2 keyboard. What is going on? Or is there another way to reset my password?
View 4 Replies View RelatedI've encrypted my root partition with LUKS and cannot remember my password. My main question is this: is it possible to extract the hash (or key; not sure on the correct terminology here) from the LUKS header and run it through a cracker? The hash type is SHA1 and I can remember the characters I used for the password, just not in the correct order (lots of special characters). That being said, given such a small charset, it should be crackable within a reasonable time, correct? Especially if I used a GPU accelerated cracker. What I don't know how to do is go about getting the hash from the LUKS header. Is any of this possible, or am I SOL? Of course, I have physical access to the system so I can boot it into any utilities I may need to.
View 3 Replies View RelatedI have a friend that tried to change her user password on Windows, and now can't log in to her account. Of course it's the only user account on the computer. Are there system recovery tools on any Linux liveCDs that could change the passwords of Windows user account?
View 6 Replies View RelatedI have now been trying to find an answer for the following for a while and can't seem to get anything.On previous linux distros we had the option available "passwd -e" which allowed us to force the user to change their passwords upon the next login.s functionality however seems to be excluded from latest linux distros (currently using RHEL 5.4)...Does anybody know how the same effect can be achieved and perhaps any idea on why this option was removed as it was great for securing passwords
View 5 Replies View RelatedI can't get this to work on my machines.
So far I have:
1. created a key with ssh-keygen on the server to be logged in to
2. copied the .pub key to my local machine
3. chmod 700 ~/.ssh on both machines
4. chomd 600 ~/.ssh/ic_rsa on the server, and on known_hosts on my local machine
5. added the .pub key to ~/known_hosts on my local machine
my local machine doesn't have an "authorized_keys" file which is what everything is telling me I should append my .pub key to. The only thing that was in my .ssh folder was known_hosts, so I tried that. I also tried making an authorized_hosts file to no avail, changing permissions appropriatly on all files.
Should I/Can I reset ssh in some way? Is there are reason I don't have an authorized_keys file or is my known_hosts file my authorized_keys file?
Would it be better just to uninstall/reinstall ssh?
I've tried to ssh in as the root user w/o a password (RSA keys) but I've had no luck as the root user. I've tried the exact same commands with Debian 5 and Centos 5.5, without a problem. Fedora 13 and 14 won't work! I can only log in w/o a password as a normal user, never as the root user! It always asks for the password if I try as root. I've even tried copying Debian's and Centos's sshd_config file and restarting sshd, but it still won't work.
Code:
mkdir ~/.ssh ~username/.ssh
chmod 0700 ~/.ssh ~username/.ssh
echo "ssh-rsa AAAAB............Jw8V03loeZ username@thehostname" > ~/.ssh/authorized_keys
[code]....
i changed my password and whenever i log in i get a message that ur login keyring password and user password do not match, so how do i change my login keyring password!!
View 1 Replies View Relatedeverytime 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?
View 4 Replies View Relatedi forgot root password and how to change the password
View 3 Replies View RelatedMy computer was working this morning and both hard drives were working fine, then all of a sudden for about two hours I was stuck with this "problem", then after fumbling and moving and stablizing things, then Windows works? See below for details. I've finally reinstalled both hard drives, but the one with the Linux partition doesn't work: it says nothing is discovered on the disk. I can't login at the LUKS login after grub starts, therefore I can't get into Linux, but Windows works?! I used to be able to go directly into Grub when the computer starts, I forgot how to do that but it doesn't matter. If you need details I'd be glad to provide them. I just wondered why Linux doesn't work, but Windows does. I have Linux & Windows on two different separate hard drives
View 5 Replies View RelatedI forgot my ubuntu password, trying to follow the instruction on the web but keep fails to recover my password.
View 1 Replies View RelatedMy desktop won't come up automatically now on a hard disk of mine (see below for the Ubuntu version history). It does boot up with Grub etc; then the Ubuntu load up bar thing with the timer spinning around [I hope you can understand this technical language!] goes through ok but then instead of getting the user interface with the little boxes to enter my login and password, the whole screen is in black (as if it's in Terminal mode). This black screen then asks me for my login and password: when I entered them, it said:
Starting up......loading, please wait
19 + 0 records in
19 + 0 records out
kinit: [followed by a load of technical stuff and a series of numbers]
kinit: trying to resume from /dev/disk/ by-uuid/9b [then a whole series of numbers]
kinit: no resume image, doing normal boot.
[Code]...
Not sure how to do this on 9.10. After upgrading I noticed that the login screen is displying the users of the machine; however, I want to login screen to ask for username and password, without showing the users.
Is there a way to get the login screen to disable the saved users? Or a way to make the login screen ask for username and password?
With
Code:
sudo -u -i user
I can access their shell, but I how do I login into a gui?
By the way, how common among all the commands is the ability to combine options that do not require arguments in a single block after - ? I.e., sudo -i -u to sudo -iu.
Also, what happens when root is disabled and a basic user sudoes? A threat is displayed and mail is supposed to be sent to root, which is disabled, so?
i use ubuntu 10.04, is there a way to set two passwords for 1 user account
View 2 Replies View RelatedMy daughter has forgotten her password on our desktop system. Note this is not the admin user (me) so I can sudo nautilus to recover her files. All info online seems to pertain to recovering administrators password is there any way of recovering a non admin password? Ubuntu 9.10 but about to be upgraded 10 10.
View 3 Replies View RelatedI am running the latest xubuntu and I lost my password or so I think I might be typing it wrong, is there way to recover it (easy please).
View 2 Replies View RelatedI forgot my usrename and password to get in what can I do?
View 9 Replies View RelatedI read a few pages on how to get my password or reset or whatever and the pages don't apply to Ubuntu 9. They seem to describe older versions of Ubuntu and as i haven't done this before i have no idea where to go with it. One site suggested i add a line into an edit page after getting into the recovery mode but i can't see how. I am using a livecd to post right now. I forgot the password because it took forever for me to get my replacement motherboard after frying the previous one.
View 8 Replies View Related