Fedora Security :: Can't Get Kde Login Banner To Display On F12

Dec 8, 2009

I'm trying to secure a workstation according to the DISA STIG and updated this machine from f10 to f12 to take care of a lot of kernel and openssl vulnerabilities.

I've gone into the Login Manager by running /usr/bin/kcmshell4 kdm --lang en_US as root, turned off themed greeter to enable the Dialog tab and inserted the login banner in the Greeting field. I checked the Xresources file in both /etc/kde/kdm and /etc/X11/xdm and the xlogin*greeting: field has my banner.

However when I restart the machine I am not prompted by the banner and when I select a user I am not prompted by the banner.

I'm not sure if this could be the issue but I get errors when launching kcmshell4:


I have to sudo -s from the user with uid 1003 to root. does this need to be run from real root?

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Ubuntu :: Configure SSH To Display A Warning Banner At Login

Aug 27, 2010

configure SSH to display a warning banner at login

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Red Hat / Fedora :: RHEL6 Login Banner With Cancel Button Not Working

Jan 25, 2011

Having a little issue with creating a login message banner in RHEL6 that uses two buttons. One for Accept which logs the user in. The second for Cancel which immediately logs the user out. I've modified the /etc/gdm/PostLogin/Default file to have the script, posted below, and it worked perfectly fine in RHEL5. But in 6, when you click Cancel, the user is still able to log in. It even states in the system logs that the user cancelled the login.As you can see, I have the script using the 9th field of the user's env to get the PID, and using the kill command to end the process, which should be logging the user out right away if they click the Cancel button. This works in 5 without issue (though I used -f5 in RHEL5, had to move it to -f9 for RHEL6).

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Ubuntu Security :: Edit Ssh Banner Via Non-ssh Connection?

Jun 14, 2010

I have changed my sshd banner in /etc/motd code...

However, I would also like to change the banner that someone sees if they attempt to use another method of connecting to my ssh server (telnet, for example). Currently, this is what happens code...

Where do I edit the telnet/ssh banner, so it isn't so easy to fingerprint my os/ssh version simply by using something such as telnet?

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Fedora :: Banner Sheet Cannot Be Disabled On F12

Dec 20, 2009

My F12 is connected to a Xerox DC432 printer on the network. The problem I'm facing is that banner sheet cannot be disable. The configuration setting on Administration->Printing showed that banner is off by default. "/etc/cups/printers.conf" file also have "JobSheets none none". I had the same problem with F11. Is there any step I'm missing? It doesn't seem to be problem of the printer itself because I could do this on a Windows OS.

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Fedora :: Change The Display (login) Manager From Gdm To Kdm?

Sep 1, 2009

I've been using kde environment in fedora 11 but I get the login screen gdm instead of kdm. Is there any way to change the display (login) manager from gdm to kdm.

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Fedora :: Can't Login To F14 / Display Goes Black And Redirected Back To The Log In Screen?

Nov 3, 2010

So, I just installed Fedora yesterday. I have been trying out different Linux distros and Fedora was next after Ubuntu and SuSE failed severely. So, I installed F14 yesterday and everything has been great... until I tried to set my JAVA_HOME variable. I followed the instructions here.

After editing $ vi ~/.bash_profile as the site instructs, I proceeded to log-out and log back in...except I can't log back in. I have repeatedly gotten the login screen, selected my account, and entered my password. When I enter my password incorrectly, it says 'Validation Error' and that is not what is occurring. The display goes black for a couple of seconds and I am redirected back to the log in screen.

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Red Hat / Fedora :: RHEL 4 Exceed Login Shows Display But Can't Log In As User, Only Root?

Jun 9, 2011

I've checked gdmsetup and there isn't anything that I can see that keeps my general users from getting in remotely. I can get the Gnome to login as root but not as a user. SSH from PuTTY works fine for all users. The error I get actually says that the username or password is incorrect - checked using SSH and it is fine.

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Fedora Security :: Gui Ids - Display A Quick Little Notification On The Bottom Right Hand Corner Of Screen

Apr 6, 2009

I might get harassed for making this windows/linux comparison, but i'm seriously wondering why i cant find any application that can display a quick little notification on the bottom right hand corner of my screen whenever there's some intrusion attempt.

For example, sometimes I can see that in my /etc/logs/secure (or something like that) there's someone who's trying to attempt to connect to me using random usernames/passwords from different servers. The only time I know this has happened is when i actually open the file with gedit. Is there anything like (norton for windows) that can display little notifications (with or without eye candy)??

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Fedora :: Cannot Login After Security Update

Sep 13, 2009

Yesterday, I updated my system with the latest security update and other software updates. Following the update, I am not able to log into the system after restart.As usual, I was prompted with the login page which looks as per normal. I chose my login id and entered my password. It brings me briefly to my desktop showing only my wallpaper (without any upper and bottom taskbars/panels). Then the screen went blank and the login page appeared again.I entered the login id and password, was shown the desktop wallpaper, screen went blank and the login page appeared. This continues over and over and over. After multiple tries and with some luck, I am able to log in as per normal.What seems to be the problem?

1. How do I check the system for errors?
2. How do I check which update has been updated?
3. Is there any way for me to restore to its original state (I migrated from FC10 to FC11 via yum update)?

The only other change apart from the security update is that I installed wine - which has been uninstalled the moment I was able to re-logged in.I attach the details of my grub.conf file below which I hope could be of some useful info.

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Fedora Security :: Login Prevented, First In X And Then In VT?

Aug 18, 2010

I have had two instances recently where I was unable to log in to my computer with uid 500, but I could log in as root. In the first case, I could log in as user 500 to virtual terminals (ctrl-alt-F2, etc) but I could not log in to X. I found that, in the file /etc/pam.d/password-auth-acthere was an extra line that read"accountrequiredpam.access.so"I did not put that line there. When I removed the line, I could log in fine.In the other case, I could log in as user 500 to X, but could not log in to virtual terminals as user 500 (but could as root). I found that, in the file/etc/pam.d/system-auth-acThere was the same extra line as above. And again, I did not put it there, but when I removed it the problem was solved and I could log in to virtual terminals as user 500.I would like to find out, step by step, what happens when I enter my username and password in either a virtual terminal or in X. The login info must be passed to something that checks some files and then lets me in or not. How does that work?

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Fedora Security :: Email On ALL Ssh Login Attempts?

Apr 28, 2009

I know this is probably easy and if I only took a while to figure it out maybe I could but I have some stuff that needs to happen soon and I can't figure this out. I was wondering how I could have a log monitor that would email me whenever someone tries to login over ssh to my system. I'm open to everything daemons/scripts or cron itl works as I am not running a production server (but I might be starting that soon). Oh and just a side how do I get sent an email when I get port scanned

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Fedora Security :: Forgot Login Password?

May 8, 2009

I 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.

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Fedora Security :: SSH Key Based Login Not Working On F11

Jul 20, 2009

I'm migrating my file server from Fedora 9 to Fedora 11 (clean install), and I'm having a horrendous time trying to get key based SSH logins working. I've set it up before, and I can't figure out why it won't work now. I copied my public key into ~/.ssh/authorized_keys2 and set the folder permissions for 700 and the file permissions for 600. Then I restarted sshd. Now unless I remember wrong I thought that's all you have to do. It didn't work. So I rebooted just for good measure. Still didn't work. So I made sure that my client was still sane. I can log into my OpenBSD machine just fine. I compared the sshd_config from OpenBSD to the Fedora one, and the options seem pretty close.

At that point I had nothing to lose and just started messing with the Fedora sshd_config. I also noticed in the config that the commented AuthorizedKeys file had dropped the 2 off the end, so I tried changing that as well. Still nothing. Password based logins work, but I really don't want to go that route. Now I can only think of two possibilities. One, some sshd_config setting is wrong and I don't know what it is. Two, there's some package that's required for key based logins that I accidentally unchecked during the install process. That's about all I can come up with. Here's my sshd_config, I tried to just set everything back to default.

#Port 22
#AddressFamily any
#ListenAddress ::

# Disable legacy (protocol version 1) support in the server for new
# installations. In future the default will change to require explicit
# activation of protocol 1
Protocol 2 .....

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Fedora Security :: Need To Login As Root User

Sep 8, 2009

I have a problem, I have installed Fedora 11. And i need to login as root user.
How to do so?

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Fedora Security :: Ssh Malicious Login Attempts

Nov 15, 2009

I have a server box behind my ISP router at home, and I need to allow ssh access to my server. My ISP router doesn't let me allow selectively ssh from some IP. It allows ssh to everyone.

I have fedora10 and openssh-server-5.1p1-3. How can I configure openssh to allow just from 1 IP?

Does it use xinetd at all and the hosts.allow and .deny mechanism?

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Fedora Security :: Login Webpage Is Not Trusted (ISP)?

Nov 29, 2009

got this message during my login to my ISP webpage broadband , this first time i got thisQuote:

You have asked Firefox to connect
securely to ******, but we can't confirm that your connection is secure.
Normally, when you try to connect securely,


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Fedora Security :: Admin Users Without GDM Login?

Jul 26, 2010

I need to create a number of internal Linux users for admin purposes. I do not want these users to appear on the initial console login page just after Fedora boots up, as users who can attempt to log in, and I do not want to allow these users to log in directly. I merely want these users to be accessed via su, just like the root user.

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Fedora :: Security Context During Login While Entering GDM

May 3, 2011

After entering the gdm I'm being asked "Would you like to enter a Security Context [N]?" during login. I've had a look around online but can find nothing final about this.

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Fedora Security :: Disable Remote Root Login?

Apr 4, 2009

Remote root login is enabled. How do I disable this

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Fedora Security :: Hide Username In Login Screen - GDM

Jul 29, 2009

Is there any way to hide my username in login screen (GDM)? I ask this because in Ubuntu I have seen that you need manually enter your username.

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Fedora Security :: Administrative Login In User Account?

Sep 25, 2009

I am a new Linux user and have a question about the administrative authentication. When I am logged in as a user and I need to do something that requires root privileges the little password window comes up and I enter the root password. My question is how long are the root privileges granted for?I noticed that a few minutes after finishing checking out the firewall configuration tool and closing the window that I was still able to re-enter the fire wall tool and other administrative tools. How do I log out of the root privileges without logging out and then back into my account?

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Fedora Security :: Root Login Via Ssh 12 Password Authentication?

Jan 27, 2010

Can't seem to do it, wondering if anyone knows how? Normally there's something in sshd_config that can be switched to true or yes to allow root login but I can't see it in fedora 12.I can login via root at a terminal no problem, just not via ssh, I get access denied every time. Also, I need to login using password authentication.I've done: 227169 but that's just for GUI which I don't really need since I rarely ever log into the GUI.I have also searched through here and mostly only found info such as above, how to enable root login for GUI, or billions of posts about how logingin as root is bad but I cannotswer to my question.DISCLAIMER: Please do not reply to this thread if all you can contribute is the question of why I need root or to put some message telling me I can do everything using su, etc, etc. Please only contribute if you can answer my question. A: My machine and a valid quesiton. B: Spirit of Linux is open, not restrictive

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Fedora Security :: Log Files Empty - System Does Not Allow Root To Login ?

Feb 2, 2010

For a month or so now, I have been enabling ssh and opening port 22. I cron'ed the start and stop commands to leave them open only a few hours a day. After a bit, I checked my logs to find that some IP or another was attempting to brute force my root account.

I took little real threat by the offense.

(1) my system does not allow root to login and

(2) it would cut them off sooner than later when my system issued the stop command.

fast forward

Today I log in to find that all of my log files, as viewed from the gnome log file viewer, were empty of entries from about noon yesterday and prior.

Though I haven't noticed anything at all out of the ordinary with my system, I would like to get more opinions on the matter. Would there be any conceivable way that this was an automatic system routine, a clean up action of something? Additionally, if I was indeed the victim of a hack, what can I do to further protect my system (keeping in mind that I do want to access my system via ssh from time to time)?

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Fedora Security :: Setting Up Server To Store User Login Information

Mar 18, 2010

I wanted to set up Computer Lab. loading Fedora 11 OS and one system acting as a Server to store Users(Student) Login Informations. When students do a programs, all programs (eg, C++ programs) files should be saved in the local fedora system but when login to the system, the login should be validate by a Server System.

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Ubuntu Security :: Login Panel Is Worse From Security View Point

Jan 19, 2010

ubuntu 9.10 login panel is worse with respect to ubuntu 8 since now all the users with names are shown without a way to hide them!Why don't keep the old way at least as an option?

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Ubuntu Security :: Updated Browsers Using Update Manager Have Lost Security Login Pages For Web Mail?

Mar 3, 2011

i updated both browsers i have and lost my secure log-in pages (no padlocks showing ) concerning different Web mail accounts.Just before i did these updates i checked an unrelated thing on-line regarding my sound card of which i kept a copy of and got this message below :

!!ALSA/HDA dmesg
[ 12.762633] cfg80211: Calling CRDA for country: AM


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Ubuntu Security :: Bad Login Protocols - Graphical Login For Gnome Sizes Itself To Accommodate A User's Exact Password Length

Dec 14, 2010

I'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.

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Ubuntu Security :: Startup Login Screen Security?

Aug 27, 2010

just migrated to Lucid from Jaunty and noticed that the login startup screen looks more like windoze (shows all authorized users).One of the endearing security checks with Unix was that if you had access to a console you had guess both userid AND password - the system wouldn't tell you which was wrong.I feel that we have lowered security by making the list of authorized users visible on a console. Is there any way to turn it off and force users to enter both userid and password?

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Ubuntu Security :: Security E-mails At Root Login?

Sep 8, 2010

Whenever I login as root, an e-mail with the subject "Security information" is sent outwhere the e-mail address for this message is configured? I need to change it (or perhaps disable it).

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