Red Hat / Fedora :: Using PAM To Restrict Ability To Change Password?
Mar 14, 2011
I have some users authenticated with AD and some locally, I want to allow only local users and root to change their password with passwd, not users authenticating over AD - so far I have this in my /etc/pam.d/passswd file
password sufficiant pam_unix.so shadow nullok audit
password required pam_echo.so
You CANNOT change your password using the Linux passwd command
[code]....
This works fine in allowing my normal users to change passwords and my AD users to be blocked, however, root cannot change passwords - the pam_rootok module seems only to work for auth - is there a way I can define root as a sufficiant check for password?
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Aug 31, 2011
What files or programs have the ability to change your default network scripts and config files? All 3 of these very important files got changed on their own.
/etc/sysconfig/network-scripts/ifcfg-wlan0
/etc/sysconfig/networking/devices/ifcfg-wlan0
/etc/sysconfig/networking/profiles/default/ifcfg-wlan0
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Jan 8, 2010
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?
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May 11, 2010
I want the users to access servers via ssh public key only. By default they don't know their initial password and do need to change that when performing administrative tasks.For changing their passwords without knowing the old they need to switch to root for this special case.The only case it seems I don't have control is that users can not only change their password but also the password of other peoples. Does someone sees a solution (without apparmor/selinux and special /usr/bin/passwd.sh) to restrict users to only change their password?I miss the feature of using environment variables in sudoers file.
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May 26, 2010
i using policy kit to restrict removable mounting to prompt for root password, but on 11.2, I am unable to do so.i read out, ver 11.2 not longer using hal and policykit, rather sth like freedesktop.org policy.
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Feb 14, 2011
I want to replace Windows AD with SAMBA I want to know what policies restrictions I can get in SAMBA as compared to windows AD - whether it is possible to restrict clients not to change IP, access cdrom or control panel.
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Jan 1, 2011
I have a server, with a trust relationship. Thanks to that, I can log in without being prompted for the password.But - I'm trying to Change the password, using passwd. I get:Unknown Errorpasswd: unknown user (uid=0)This is a NIS server, and typing passwd <account> brings up a prompt for the old password of <account>What should I check next? I only have a few days before the account locks out...
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Jul 30, 2009
I got during my last year of high school, and I recently installed Fedora 11. During the installation, I misunderstood one of the questions, and set my root password as what I wanted my account password. I want to go in and change it, because it's pretty easy to figure out and has me feeling really vulnerable, but it won't let me. I went to System-Administration-Root Password, entered my password, and put in a new one, but it won't let me click Change Root Password. The button is faded out and unclickable. I've tried several different passwords, and triple-checked each to make sure I typed it in correctly, but it won't work.
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Jul 16, 2010
After we changed Root's password (using the passwd command), both the new and old password work. Any ideas why this could be happening?
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Aug 26, 2009
I want to change the password complexity how do i do this?
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Sep 17, 2009
Forgot root password on fedora 10. Reboot into runlevel one and changed passwd and it said all tolkens updated. Typed exit and it didn't reboot and at login screen I logged in as other "root" and it didn't work with new password. So I redid the runlevel 1 and password change and typed init 6. It didn't work after that also. How to change fedora 10 root password if the old password is forgot?
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Nov 4, 2009
How do I change my default keyring password in F11?
The instructions from here no longer work:
Code:
$ yum search gnome-keyring-manager
Loaded plugins: dellsysidplugin2, fastestmirror, refresh-packagekit
Warning: No matches found for: gnome-keyring-manager
No Matches found
Longer story:
Somehow I got my keyring and login passwords out of sync. I went to change my login password using passwd on the terminal. I meant to change it to (let's say) "abcdef" but typed "abcdfe" twice. Realizing my mistake I tried to used passwd a second time to change it to "abcdef", but passwd complained that the new password was too similar to the old. So I used "su -c 'passwd myusername'" - I was able to change my login password but I guess this did not update my keyring password. I've tried changing my password using passwd as myself (not root) to something completelydifferent, but my keyring password remains the first password (e.g. "abcdfe").
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Jan 1, 2010
I've changed my wireless network password and when I try to connect through my F10 machine, it continues to use the old password. I've changed it a number of times through the GUI that pops up (Wireless Network Authentication Required) and also through the Edit Connections GUI but they always revert back to the old password and disregard the new one.
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Mar 25, 2010
I am running Fedora 12 as Guest OS in VMware Player. I installed Fedora 12 by using a Prepackage VM . The root user name and p/w was supplied by the person who made this appliance. Is there way for me to change root user name and pw
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Sep 1, 2010
I recently installed Fedora 13, Xfce, on my HP netbook. It's using AR9285. When i try to connect to my network with WPA enabled it will not work despite the password info being correct. I'm using a DI-514 router, with no updates to firmware. It only works, if I change the password, then use said password, then, when I disconnect, said password no longer works. WEP works just fine, open network works fine, why wont WPA-PSK work?
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Sep 16, 2010
this problem is becoming too frequent now:
a) User is created using our standard protocol on the NIS/YP server.
b) *Sometimes* : user is rejected at first login. Password not recognized.
c) When going to do a password reset, being root on the NIS/YP server something like this happens:
# passwd johndoe
Changing password for user johndoe.
New UNIX password:
Retype new UNIX password:
NIS password could not be changed. << ------------- ERROR
passwd: all authentication tokens updated successfully.
The entry in the log doesn't help much: Sep 15 10:56:28 nisserver rpc. yppasswdd[2149]: update johndoe (uid=31742) from host 128. xxx194. xxx.xx rejected Sep 15 10:56:28 nisserver rpc. yppasswdd[2149]: Invalid password.
Notes:
1) A valid & strong password -known to work with other account- has been given.
2) The password is indeed changed in /etc/shadow, and the NIS/YP databases update (cd /var/yp; make) has not been done yet.
I know there is a different condition when the password is updated by the user from a Fedora host (long encoding using sha512 vs original md5 encoding in the server) - but this is happening locally on the CentOS-based server before having the user change the password. But even that has worked before with dozens of users.
A recent occurrence of the issue kept rejecting the original password chosen by the user until he decided to choose a different one. I have tried different from easy to elaborate passwords with no difference. This is just happening now with two new users: one of them reported that it worked just fine, the other is being rejected - they were created at the same time.
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Apr 13, 2011
I have a problem with my fedora workstation.I am trying to change my ldap user password through passwd command.When I first create the user on ldap server, I use md5 and create the user password.This is the entry:
Code:
dn: uid=boo,ou=People,dc=linux,dc=gettolandia,dc=org
uid: boo
[code]....
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Feb 19, 2010
I have squid server running FC7. i have created a ncsa authentication for windows user to use internet through squid proxy.
My problem is that the each created user should be able to change their password.
- Is there a way, using NCSA authentication, to allow users to change their passwords?
- Is there a way to use windows AD password for squid authentication. if so how?
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Nov 22, 2010
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
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Mar 9, 2010
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.
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Jun 14, 2011
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?
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Mar 16, 2009
How can I change the root password of MYSQL server. I have just finished installation, but I mistakenly typed the wrong root password, and now I need to change it from command line, because I cannot even access the UI.
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Jul 20, 2010
How to change pass all user VSFTPD via ftp client, web, ...? Gene6FTP could change by command: site pswd oldpass newpass. So, how can vsftpd do it?
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Jul 25, 2011
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?
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Apr 14, 2010
Is there a way to change password to value same as the previous password? I know this is a security flaw, but would like to know however. when I try this:
[Code].....
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Jan 13, 2010
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.
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Jul 2, 2010
i forgot root password and how to change the password
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Jan 6, 2009
At the RHEL prompt, I entered the standard user's username/password combo. Linux displays a message box stating:"Your account has expired; please contact your system administrator."Next, I entered "root" in the username field and entered the root password (which expired also--keep in mind that passwords are set to expire after x days). Linux displays a message box stating:"You are required to change your password immediately (password aged)."When prompted to "Enter current UNIX password", I entered the new password (was that the right thing to do?); Linux displays a message box stating:"The change of the authentication token failed. Please try again later or contact the system administrator."I rebooted the system and got into command line mode; somehow I logged in as "root" (don't know exactly how, but needed to change the password there). At the "#" prompt, I type "passwd root"; Linux displays the message "Changing password for user root", followed by the message "passwd: Authentication information cannot be recovered.
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Dec 8, 2010
For some reason passwd does not accept my current password as the old password when i try to change my password with the command passwd. Im not sure whats wrong with whatever linux uses to handle passwords but I cant even change passwords with the root user account. Is there any way to fix both of these problems.
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Mar 17, 2011
When I login to my laptop, there's a dialog that asks me for a password. When I fill that in, it allows the network manager to access my wifi password and connect to the wifi.How can I change the password that network manager is asking for? It's kinda awkward to ask this question - I am not asking how to change my wifi password, but the password that comes up - Seahorse? I'm not sure what's used on Lubuntu.
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