Security :: Installed CentOS And Redhat5 On A LVM Partition And Selinux Is Enabled?
Oct 18, 2010
I have installed CentOS and Redhat5 on a LVM partition and selinux is enabled. Both OS's share the same /home partition with one user with the same login(gc) and same uid (1000). The problem I am having is that gc can login with all permissions etc on the OS that was installed first (CentOS). For the redhat OS gc can login but cannot write to the home directory (or startx since X needs to write to Xauthority)Here are outputs - 1st CentOS
Trying to keep selinux enabled. When I start SeLinux Troubleshooter from the menu, which is inautostart as well, It tells me SELinux not enabled, sealert will not run on nonSELinus systems".How do I get SELinux permanently started then
I decided that I'd torture myself and try to get a server up and running with SELinux fully enabled. I so far have figured out virtual hosting, vsftpd, and SSH to work with it nicely, but I can't figure out what to do to get AWstats to be viewable through a browser with SELinux enabled. This is what I get from /var/log/messages:
I used to be Novell admin/CNE more than nine years. Since Novell sunset, I study myself and move to Linux...... At daily work, I face a lot challenges of Linux. I really need to get help from experienced Linux people. How to clean up disk space on /var partition Red Hat 5.
I am trying to use CentOS 5.4 to set up a secure laptop, largely because of it's SELinux functionality. Unfortunately I couldn't get wireless to work properly using the default NetworkManager so I installed wicd. Initially it buggered up my whole installation but after relabelling files using SEL I can now use my system again. but.. I can't use it with SELinux enabled, as it denies the required accesses for wicd to work. I also get similar SELinux denials for wpa_supplicant. A couple of snippets from /var/log/audit/audit.log -
I installed Nvidia drivers n my Fedora 14 and was working just fine!I also have disabled Nouveau to make it work.But after i changed the selinux to permissive my X no longer loads!
I configured DNS in my server while That time SELINUX enabled means It show permission denied error and some errors, but i checked all the directory permissions and all its every thing correct only but not worked..At last I just disabled the SELINUX then its working fine.I Heard SELINUX is for security for Linux operating systems, but why i disabled means only its working??
I'm trying to recover a GFS2 partition on a SAN that was connected to a server that was recently kickstarted with the "clearpart -all -initlabel". Is this possible? The volumes are quite large (20TB). I'm currently in the process of using parted's rescue feature but so far that has been unsuccessful.
i have dual OS in my hard disk. win xp and rhel5. i used use ntfs partition too while working in linux. There is no problem until i enable selinux. When i enabled that, its giving some error at startup and left the partition unmounted. But manually i can mount after logged in. But i need it at the startup itself. How to solve this.i am installed dkms* dkms-fuse* fuse* and fuse-ntfs-3g* rpms to use the ntfs partitions.
this is the allert i got:Code:Summary:Your system may be seriously compromised! /usr/sbin/NetworkManager tried to loada kernel module.Detailed Description:SELinux has prevented NetworkManager from loading a kernel module. All confinedprograms that need to load kernel modules should have already had policy writtenfor them. If a compromised application tries to modify the kernel this AVC willbe generated. This is a serious issue.Your system may very well be compromised.Allowing Access:Contact your security administrator and report this issue.Additional Information:
I am learning SELinux from LinuxCBT and I'm stuck at one place. Now video is on RHEL 4 (so tell me if things has changed since, cause I can't find anything related) shows how to disable SELinux security on httpd.first I don't know diff between initrc_t and uncofined_t; and second I don't know if something is wrong is everything is all right.
The default Firewall ufw is not enabled by default at the time of installation and it has to be enabled by the user.Isn't this a security risk or is the user whether ufw is enabled or not secured from external threats?I am not much knowledgeable about network security But I am trying to understand the Ubuntu mentality behind this default setting.
i am trying to install centos 5.5 x86_64 as a guest OS in vmware server 2.0.2 using netinstall iso. Installation runs fine until the point, when it tries to install selinux-policy-targeted-2.4.6-279.el5.noarch, the whole virtual pc hangs at this.any ideas? i tried to google few things about this, but i have found nothing. this has happened 3 times in row, whole virtual pc always hangs at the same package. i dont have any other problems with vmware, gentoo runs and installs fine in it.i would prefer to do installation using netinstall.iso, it would take a lot of time to download all cds or whole dvd and all i require is a very basic set of packages.
Yesterday I installed a new server with a large partition for my XEN images. This partition is a about 930GB. The installation tooks ages and after he finished I was finding out why that is. The SoftRAID1 I configured is rebuilding the large partition.
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?
My newly installed Fedora-14 (64-bit) has SELinux disabled. I can't find any way to enable it. I tried to set it manually in /etc/selinux/config to enforcing or permissive but nothing happens after reboot. In GUI configuration tool it is set to disabled and grayed out so that there is no way to enable it there. Is there another way to enable SELinux?
I tried to log in to my xguest account and it asked for a password, which it shouldn't, so there's a problem with SELinux.When I type getenforce it says it is disabled, yet when I go to /etc/selinux and look at the config, it is in enforcing mode and not commented out, type is strict.When I go to the SELinux management GUI I can't change the current enforcing mode and it's set to disabled and default to enforcing.
having trouble understanding selinux. the domain is cluster containing permissions. a type is nothing more than a label applied to something like a file,right? so instead of applying the permission set of foo domain to the /etc/shadow file it would be apply label shadow_t to /etc/shadow and make the shadow_t apart of the foo domain?
We have installed RHEL 5.4 on our servers and everything is running fine. Now I have gone through various server hardening checklist and most of them suggest to enable SELinux. We have several services running on Linux box. Now my question is, do we have to make any chagnes to the existing configurations if we enable SELinux. Or we just enable SELinux and leave it as it is. Because I have had prior experiences where SElinux will stop many services and restrict access to many libraries when enabled.
When I turn on my SeLinux to enforcing mode on my Red Hat system ssh stops working and my http server stops responding.
I went into the SeLinux GUI and enabled things in there but still it wont work.
Any thoughts on what to check?
permissive mode and disabled they work
I read several articles that say it should not be affect by SeLinux and the setting look correct but the only thing I do is turn on SeLinux and ssh /httpd stop working
I am running Fedora 11 and every time i plug in my iPod it tells me... SELinux is preventing mkdir (podsleuth_t) "read" security_t ... I have no idea on how to create a policy module to allow access.
I get a SELinux relabel often even without changing stuff. SELinux troubleshoot doesn't show any error nor are there any messages in /log/messages that give any clue. Where should I look to see whats happening ?
I wonder if SELinux really are necessary for a home desktop ? It only makes my computer use more problematic than it already is. What can happend if I uninstall it on my Fedora 13 dist ? Is the hole Internet going to come in to my computer and destroy it ?
If I uninstall SELinux, is the firewall uninstalled also ?
I have recently upgraded from FC12 to FC13, and last week I updated all packages using YUM. The system is running as a VM inside CentOS 5.5 using KVM. SELinux is enforcing, using the targeted policy. Bugzilla is version 3.6.1 and was NOT installed using RPM or YUM.
Bugzilla was working OK on this machine until SELinux was upgraded last week from 3.7.19-28 to 3.7.19-33, and is still broken after testing 3.7.19-37 from the testing repo. With SELinux in enforcing mode, apache returns error 500 when I browse to the main bugzilla page. The apache error log shows this:-
Code: [Mon Jul 19 13:15:08 2010] [error] [client 192.168.40.1] (13)Permission denied: exec of '/var/www/html/bugzilla/index.cgi' failed Nothing, and I mean absolutely nothing, is recorded in /var/log/audit/audit.log, /var/log/messages or /var/log/secure.
"SELinux is preventing /bin/mailx from append access on the file /var/lib/rkhunter/rkhcronlog.OmRFCZOynG."
I tried to fix it by "# /sbin/restorecon -v /var/lib/rkhunter/rkhcronlog.OmRFCZOynG" as suggested by SELinux but it comes back with another warning, but with a different /rkhcronlog.xxxxxxxxx...
i think its just a way of rkhunter logging issue -. attached here is the actual error message by selinux.
I just install Fedora 15 and I see the SELinux Policy Genertation Tool and the SELinux Administration application in the app launcher but I do not see the SELinux Troubleshooter app. I seems to be missing. How do I get it on my system?
I need to change SELinux policy to permissive and then back to enforced for an installation. I understand that I should be able to do that through the SELinux Administration window accessed through System -> Administration ->SELinux Management. But I do not have any real sysadmin tools available in my Fedora 15 Gnome Gui interface. Am I missing something, or should I use some sort of similar command line tool to do this?
I would like to secure my site and I want to implement CAS for SSO, SELinux for the permission into my server and CODA, the last one I have read is not compatible with it, but I don't know if somebody have tried something. The most important request from HQ is use SELinux, they're conviced is the best one for the user permissions. I tried to look for some info in internet but there almost nothing.
I'd like to grant /usr/sbin/sendmail.sendmail "connectto" access to the unix_stream_socket /var/lib/imap/socket/lmtp.How do I do that?I want to eliminate error messages that keep appearing in my message log:
/var/log/messages:Jan 13 11:45:29 e setroubleshoot: SELinux is preventing /usr/sbin/sendmail.sendmail from connectto access on the unix_stream_socket /var/lib/imap/socket/lmtp. For complete SELinux messages. run sealert -l 05df828f-4402-
