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 :: SELinux Context For Cgi-bin?

Oct 20, 2010

I'm attempting to get MapServer running on my Fedora 13 computer. I was able to install with the package manager, and the executable (mapserv) was originally placed in /usr/sbin. But I need it in /var/www/cgi-bin to work on the webserver. So I copied the file to the right location. Unfortunately, it doesn't have the correct SELinux context. Here's the message from the troubleshooter:

SELinux denied access requested by /var/www/cgi-bin/mapserv. /var/www/cgi-bin/mapserv is mislabeled. /var/www/cgi-bin/mapserv default type is httpd_sys_script_exec_t, but its current type is httpd_sys_script_exec_t. Changing this file back to the default type, may fix your problem.

How's that for circular logic? Does anyone have an idea what the correct SELinux context for a cgi-bin executable might be?

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Fedora Security :: Wrong SELinux Context On /etc/sudoers?

Nov 21, 2010

I'm suspicious that the context of /etc/sudoers is wrong. During the last upgrade to Fedora 14, RPM dropped /etc/sudoers.rpmnew, which had a different context than the real sudoers file. But, when I try to get SELinux to relabel the file (using restorecon or fixfiles), it refuses to make a change.

> ls -lZ /etc/sudoers
-r--r-----. root root unconfined_u:object_r:etc_t:s0 /etc/sudoers
> matchpathcon /etc/sudoers

[code]....

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Red Hat / Fedora :: Selinux Security Alerts - Change File Context?

Apr 26, 2010

I receive messages such as the below:

SELinux is preventing /usr/sbin/httpd from using potentially mislabeled filesjk-runtime-status. SELinux has denied the httpd access to potentially mislabeled filesjk-runtime-status. This means that SELinux will not allow httpd to use these files. If httpd should be allowed this access to these files you should change the file context to one of the following types, httpd_tmp_t,

I know how to change the owner of a file and the permissions but what does it mean to change the file context?

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Fedora Security :: Ilesystem Labeled "cgroup" That Goes By The File Context?

Jul 13, 2010

Why do I have an empty directory in the top of my filesystem labeled "cgroup" that goes by the file context above?And why does it apply to all files "/cgroup(/.*)?" as per a fcontext search?Did something break or is this the result of a new update?

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Ubuntu :: Entering Login And Password In Terminal?

Jun 27, 2011

I am new to Ubuntu and been trying to download some software not in the Software centre but when I go to terminal and I enter the command text I get prompted for my password ( it automatically has my login name) but the flashing cursor will not allow me to enter any text ,it just keeps on flashing but then it tells me I have entered incorrect password, What can be the problem ? The keys are not connecting with the terminal window it appears.

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Server :: Allow A User To Login Without Entering A Password?

Dec 29, 2010

How to allow a user to login without entering a password?

If my question sounds wierd then check out m-net at www.arbornet.org/m-net.php and see how it works.

Telnet / SSH to m-net.arbornet.org and type in newuser and it won't prompt for a password.

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Ubuntu Security :: Erase A Partition Without Entering A Password?

Jan 2, 2010

I've installed Karmic after having used Jaunty in the past and it's working great, but I have a couple of security questions...

I opened the Disc Utility (Palimpsest) under System>Administration and was amazed that it looks like it will let me delete partitions on my hard drive, and without even asking for a password. This seems like an enormous security oversight, what am I missing here? Is there a bug filed for this?

Also related, why does Ubuntu allow a user to disable startup applications without requiring a password?

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Ubuntu Networking :: Skip Entering The Keyring Password For Wireless On Login?

Apr 19, 2010

Well, first off I'd like to say that I am much happier with the wireless on Ubuntu 10.04 than I was on 8.10 (the last time I tried Ubuntu). However, there is a small annoyance I'd like to fix: every time I log in, I get a prompt saying that an application (the wireless network manager) is requesting the password for such-and-such keyring. I have to enter the password before I can connect to my network. Is there a way to get around this somehow so that I don't have to enter the keyring password for this keyring (the "default" keyring) every time I log in?

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General :: Change Security Context Of Only Directories?

Jul 4, 2011

Is there a way I can change the security context of only the directories, & only files, recursively, in bash?

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Server :: Reset Security Context For Cgi-bin By Mistake?

Feb 9, 2011

I reset the security context for my cgi-bin to httpd_sys_content_t.How do I set it back to the proper context?

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Security :: Secure CGI File In Apache - Authentication By Entering The Predefined Username And Password

Sep 24, 2010

Im using opennms network configuration backup server called 'RANCID'.It run on top of RHEL5 system and using APache. Here's the link which i'm accessing [URL] But any one can access this URL and obtain my configuration files

I want to secure this using a logon page.allow login Only for the successful authentications by entering the predefined username and password But after get authenticate book marking the above URL still can access anyone since it didnt prompt username and password again In eachtime executing the above url it should direct to authenticate page

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Ubuntu :: 10.10 Installation - Everything Stop Working When Entering Setup Info (login Password - Timezone)

Dec 21, 2010

i am having a problem with the installation with ubuntu 10.10 during the installation, i was entering my setup info (login password, timezone, etc.) when everything stopped working, it wouldnt let me continue, the forward button wouldnt work. i let it set for a good 30 minutes but it wouldnt do anything.

so unable to continue, i restarted and tried to boot from my cd drive and now it wont boot from the drive, and since i let ubuntu delete my windows partition, i cant boot from it so i basically have a blank hard drive. the cd drive will boot other cds because i booted hirens boot cd in an attempt to make sure the cd drive was functioning and ran diagnostics to make sure the drive was alright.

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General :: SElinux Security Context Type & Booleans In FTP/vsftpd?

Sep 13, 2010

What are the SElinux security context type & booleans in FTP/vsftpd

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General :: Error: Security Context Requested, Bu No Selinux Support! Aborting

Apr 19, 2010

I try to install IPsec-Tools on Slackware 13, but I get an configure error: configure: error: Security Context requested, bu no selinux support! Aborting. I'm linux newbie and I'm following a slackware-basics tutorial, I did as in the tutorial, but the configure stops and aborts:

Code:
# CFLAGS="-O2 -march=i486 -mcpu=i686"
./configure --prefix=/usr
--sysconfdir=/etc
--localstatedir=/var

[Code]...
What can I do? How can I enable/install selinux support? I guess it's related with AH and ESP protocols, which in my kernel are defined as modules (m). If so, how can I enable them?

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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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CentOS 5 :: VSFTPD & CHCON - Returns The Error: /usr/bin/chcon : Couldn't Compute Security Context From Unlabeled?

Apr 8, 2011

The script "vsftpd_virtualuser_add.sh" from the guide here:

http://wiki.centos.org/HowTos/Chroot_Vsftpd_with_non-system_users

executes the following line: /usr/bin/chcon -t public_content_rw_t $HOMEDIR/$USERNAME

which returns the error: /usr/bin/chcon: couldn't compute security context from unlabeled

Login attempts are unsuccessful on the given username.I followed the instructions on that page verbatim.I can't find anything useful on that error anywhere - even outside of vsftpd context.This is a new CentOS 5.5 server - updated everything with yum.VSFTP worked fine on the last server, which was a CentOS 5.x.

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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.

Code:
#Port 22
#AddressFamily any
#ListenAddress 0.0.0.0
#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,

[code]....

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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:

Quote:

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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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 :: 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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