General :: Ensure Strength Of Passwords Set By Root?
Mar 16, 2011
Password strength in Linux can be ensured by setting parameters in /etc/pam.d/common-password file. But these policies apply only for non-root users, when they set password for themselves.s there any way to ensure strength of passwords assigned by root?Example: Normally root can assign passwords like "hello" "password" etc. Is there a way to ensure that passwords assigned by root must contain a special character and a digit as mandatory?
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Jan 8, 2010
I was considering adding the below to my RHEL5 system's /etc/pam.d/system-auth file.
password required pam_cracklib.so try_first_pass retry=3 minlen=8
dcredit=-1 ucredit=-1 ocredit=-1 lcredit=0
auth required pam_unix.so nullok try_first_pass
[code]...
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Aug 2, 2010
We use a Linux server with AFS on it. I changed the linux root password using passwd. The new password will let me log in as root but when I try to change the AFS admin password it asks for the root password. When I put in the password that it let me log in as root. It tells me authentication failed. And when I run the password command with -admin admin, it asks for the admin password. I put in the admin password that worked before I changed the root and it says authorization failed.
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Apr 19, 2010
I was wondering if someone had a logical reason and therefore complete, hopefully that makes total sense, for why when I install Ubuntu I cannot use the 'sudo' command either with root or user passwords. Even if I try to edit the permissions for sudoers, I still recieve an error message that says access is denied and so as the root user on my pc I don't understand why I can't put my name in the sudoers file or use the sudo command with the correct password.
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Feb 21, 2010
Question: The USA forbids the export of secure cryptography. NSAKEY has already been discovered in the Windows cryptograhic API. Since the Linux-Kernel is hosted in the USA, how secure is its cryptography ?
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Jun 19, 2014
I installed Debian Kit on my Asus Nexus 7 tablet, and after following the installation tutorial I got it running except for I'm stuck on the step to create a new user. (btw link: [URL] .... )
Here's how it went (I can't copy&paste from my tablet so I have to type out everything...):
Code: Select allroot@android-6c40984c21c156ae:/# adduser paul374
Adding user `paul374' ...
Adding new group `paul374' (5000) ...
Adding new user `paul374' (5000) with group `paul374' ...
Creating home directory `/home/paul374' ...
[Code] ....
So since I read somewhere that selinux had some permission problem, so I did a few chcons:
Code: Select allchcon --user=u --role=r --type=init --range=s0 /etc/passwd
chcon --user=u --role=r --type=init --range=s0 /etc/shadow
chcon --user=u --role=r --type=init --range=s0 /etc/gshadow
And it did take effect:
Code: Select allroot@android-6c40984c21c156ae:/# ls -Z | grep passwd
u:r:init:s0 passwd
u:object_r:unlabeled:s0 passwd-
root@android-6c40984c21c156ae:/# ls -Z | grep shadow
u:r:init:s0 gshadow
u:object_r:unlabeled:s0 gshadow-
u:r:init:s0 shadow
u:object_r:unlabeled:s0 shadow-
...but still same thing as what happened in the beginning...
Anyway my goal is to create and be able to log in to another user so that I'm not stuck running root all the time. (Which, as we all know, is a bad idea.)
If there's a way to manually create the user by editing a few files, and root still won't be able to change passwords, I'm fine with that, as long as I have another user. Whatever it takes to just get a non-root user log-in-able...
I forgot to mention that since this is the Asus Nexus 7, there is no removable media, so chrooting from another Linux machine isn't an option, and neither is removing an SD card to use a LiveCD on it.
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Jun 21, 2011
I need to know particular mount point mounted or not before send data to that mount point.Are there any commandsi used this command. mount -t nfs 172.16.102.50:/root/ESSR_share /root/shared_storage/pc50 -o rw,hard,intr but it take long time (when machine(172.16.102.50) is not available)
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Jan 10, 2011
I downloaded a driver for my printer today and I opened it in the terminal. Then a window popped up saying "This opporation requires root (administrative) privileges. Please enter the administrative password below:" I typed in the same password that I use when authorizing the installation of programs from the Ubuntu Software Center and I tried it multiple times. Each time, it rejects the password. I even tried downloading something else from the software center, just to make sure the password was correct, but the system had no problem with the password when downloading from the software center. So, is my software center password different from my administrator password?
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Jul 8, 2010
After moving a website folder on my local development machine to another drive, then moving it back, I got a 403 error. Most of this problem had probably to do with rights that got messed up. After deleting the code and restoring it from SVN, the rights seemed allright. The error stayed however.
The setup is a bit complex, as follows:
I have Ubuntu 10.4 as development machine, trying to mimic the server as much as possible We use Eclipse + SVN and I create all projects in a local folder under my user account In /var/www-vhosts I create folders for each vhost, like this one: test.localhost test.local/index.php: includes the index file of the project
test.local/.htaccess is a dynamic link to the htaccess file in a project subfolder
I get the following error in the apache error log:
The problem seems to be the .htaccess file, or the link to it. When I empty the htaccess, nothing changes When I remove the link, the index-include produces some output (in the apache error log) When I remove the link and replace it with the actual file, I get another error:
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Jan 7, 2010
I wonder if it is possible to have two passwords for one user account in 9.10. I have a long login password (5 words about 45 characters with spaces caps). I would like to set a shorter password for Authentication, sudo, etc. While retaining the original for logging in.In short:Have long password to login to computer.Have short password for everything after login.
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Aug 1, 2011
I have winbind Active Directory authentication set up on my laptop. AD authentication works like a charm, passwords cache, etc. I can use sudo with no problem. However, I cannot use the root account -no matter what I set the root password to, the system will not take it. I also have a couple of normal system users (not winbind), and no matter what I set their passwords to, I cannot login.
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Jan 19, 2011
Do these guides work with resetting the current fedora root passwords?
http://www.labtestproject.com/linuse..._password.html
http://www.labtestproject.com/using_...d_on_fedora_10
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Jun 14, 2010
i have found this xor encryption program
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX_SIZE 256
[code]....
Its working fine, it can encrypt and decrypt. but how strong is it ? is it all depending on the specified key ?
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Jan 16, 2011
I'm using 3g modem(broadband) for connect to the internet. how can I check signal strength in ubuntu 10.04.
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Jul 5, 2011
Is there any way to specify the bit strength for LUKS when one is installing OpenSUSE 11.4? I've tried to find it (because imho 256 bit aes is a bit high for what little i do with my netbook) but I have not. I was going to try to control+alt+F4 to a shell and create the partition setup and create the LUKS container and see if that works but in the past, trying that doesn't work either because 1) the installer doesn't ask for the LUKS password or 2) it asks, setup finishes normally, but yet I then get what seems to be random boot errors like some times the /home doesn't mount, sometimes the swap doesn't enable, etc.
Anyone care to give some input? I've been around and around the installer and can't seem to find a way to do it.
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Oct 15, 2010
I have a configuration file for a network device(2100 lines). This device is configurable only over console line. If I copy chunks of those lines into terminal(I use minicom), there will be mistakes (sometimes some characters missing, space characters added etc). Hardware flow control and software flow control doesn't help either. I tried with cu utility, but same issues appeared. There will be mistakes even if I copy in ~100 line parts. What causes those missing/added characters? How to avoid those?
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Aug 31, 2010
I'm using 9.04 on a laptop .when i was useing windows I got strong full bars for the wifi signal strength. On the same laptop in the same location, I get only 2 bars (low) wifi signal strength when I'm in Ubuntu 9.04 I'm using the wifi transceiver built into my hp Anyone heard of this problem?
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Sep 22, 2010
I am looking for a tool that can monitor my 3g signal.
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Nov 12, 2010
I managed to connect to the internet using wvdial, however I am getting hardly exciting download speeds around 50 kB/s. I was really hoping to get somewhere around 150 - 300 kB/s. Hence my question: how can I "debug" the connection in Linux, i.e. what is the signal strength and if it managed to connect using 3G or only GSM.
I am using Huawei e272 usb modem (branded Vodafone, I am connecting to Virgin though). My wvdial.conf file:
Code:
[Dialer Defaults]
Phone = *99***1#
Username = user
Password = " "
Stupid Mode = 1
[Code]....
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Jun 8, 2010
I was wondering whether increasing the strength of a key by increasing the number of bits in the key to 2048 makes any sense if I want to leave the passphrase blank anyway? I'm setting up passwordless ssh logins on my LAN as I'm a bit tired of constantly being asked for a password.
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Mar 8, 2010
how do I ensure a gnome-terminal is kept in focus?
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Feb 3, 2009
I have 3 WD External USB hard dives. 2 are the same and are rotated for backup purposes and my system assigns them both to /dev/sdb (one is only plugged in at a time), this is fine.The 3rd drive is used for a different purpose and may or may not be plugged in at the same time as one of the others.How can I make the 3rd drive be allocated to /dev/sdc all of the time whether one of the other drives is plugged in or not?
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Nov 30, 2010
I am not a Linux user but and learning about it in a class and thought I would check it out. My teacher said that two linux users cannot have the same passwords but never explained why?
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Jan 9, 2011
I was wounder if there is a way to add two different passwords for one user.
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Jun 23, 2011
I can not manage to get any passwords on my network with Ettercap.I have followed several tutorials but I still seem to have no luck in getting them.I have BT5/KDE/32bit installed and using an alfa network adapter (RTL8187).First I configured etter.conf script to look as below:
ec_uid = 0 # root is the default
ec_gid = 0 # root is the default
# the command used by the remote_browser plugin
[code]...
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Feb 6, 2011
I have a WUSB54GC v.1 wireless USB adapter which I use to connect to my home network. For some reason, over time my reception has been getting worse. I'm not sure if this is due to the router or the adapter. In addition, when the signal strength dips below 50%, I can no longer receive email or browse the web. This is only a problem with Ubuntu - when I had WinXP installed, I could access the internet mostly regardless of the signal strength.
I started a year ago with the adapter plugged directly into the computer. After a while I found it necessary to use an extension cord to place the adapter outside my room, closer to the router. A while later it was time for another extension cord, and now my reception has gotten worse again, but I can't extend it any further.
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Apr 25, 2011
I see the Wifi Signal Strength icon on the top bar, but where's the label that shows the signal strength percentage? Is there a way to re-enable the label or did Canonical deemed it to be unnecessary?
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Mar 3, 2010
I've got a Linksys WMP54G Pci card of some kind that's being reported as a Ralink rt2500 pci, but it is very slow (50k/s cap) and has jumpy signal strength (goes between 70% and 10% every second or so, while the router is in the same room). It is just this pc, as I'm using my laptop fine right now with no such condition. I am running basically a fresh version of Slackware 12.2, so it's kernel version 2.6.27.7. I have used this with Slackware 13 and there was absolutely no issue, so I think it may be a wrong or outdated driver, but building kernel modules and updating whatever module it should be is not something that I'm very good at.
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Feb 10, 2010
How can I check if Ubuntu deletes all the content in /tmp folder at each shutdown
(without trial and error)?
How can I tell Ubuntu to delete it?
What about the deletion of other tracks like swapfile at shutdown?
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Feb 14, 2010
When update ubuntu 8.04 amd 64 show this message: Could not download all repository indexes. The repository may no longer be available or could not be contacted because of network problems. If available an older version of the failed index will be used. Otherwise the repository will be ignored. Check your network connection and ensure the repository address in the preferences is correct. Failed to fetch [URL] 404 Not Found. Some index files failed to download, they have been ignored, or old ones used instead.
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