Is it possible to disable logging in locally to a CentOS installation but still retain the ability to login via SSH? I will be installing a CentOS server in a remote site and don't want anyone trying to log into it
View 2 RepliesI would like to know how can Debian prompt my user instead of the root account after booting.
View 2 Replies View RelatedI have already disabled root login over the ssh by modifying /etc/ssh/sshd_config. But how would I disable root login on a server itself. We have implemented LDAP in our environment and our security guide states that root login must be obtained by first logging into the host using his/her own regular userid then gaining root privileges by using the SU.
Code:
# lsb_release -a
LSB Version: :core-3.1-ia32:core-3.1-noarch:graphics-3.1-ia32:graphics-3.1-noarch
Distributor ID: EnterpriseEnterpriseServer
Description: Enterprise Linux Enterprise Linux Server release 5.2 (Carthage)
Release: 5.2
Codename: Carthage
[root@~]# uname -a
Linux TomcatServer 2.6.18-92.el5 #1 SMP Fri May 23 22:17:30 EDT 2008 i686 i686 i386 GNU/Linux
I know I can ssh login without password from a local to a remote. My question is how I can ssh without password from the remote to another remote. Say, I have three machines: A, B, C where A is the local machine. I use the same private/public key pair for all the login. What I can do are:
1. ssh from A to B.
2. ssh from A to C.
3. If I am sitting in the computer B (or B is local), then I can ssh from B to C.
What I am not able to do is:
After I ssh from A to B, I cannot ssh from the B to C. When I try to ssh from B to C, it asks me a passphrase.
Please let me know what configuration need to be made so that root user
will not be able to log in via gui.
I am aware that taking out tty? from /etc/securetty would result in root not able to log in via CLI modes.
Similarly what is the configuration needed to make that work in GUI.?
I have loaded the LiveCd successfully on 3 laptops, now I'm at my daughters new Toshiba & and getting a "Terminal" like screen asking for "Local Host" Login, never had this experience before.
View 6 Replies View RelatedIn Ubuntu 10.04, how do you disable the sounds that are played when the graphical login screen is shown, and after you login? There used to be a friendly System->Administration dialog to disable these, but every version seems to move everything around or simply drop useful features.
View 1 Replies View RelatedI'm the only user of my PC and as of upgrading to 10.04, I get a login screen, that requests only a password, when the PC goes idle.
View 8 Replies View RelatedDoes any body knows how to disable the root login to the GUI , like i am running my redhat server on runlevel 5 and i dont need tht root to get login to the GUI , i ma talking about redhat 5.
View 2 Replies View Relatedubuntu 10.04. My computer is left on all the time. My computer's screensaver comes on 10 minutes after last keystroke. Which is fine. However, when I return to use the computer and disengage the screensaver, ubuntu ALWAYS requires my password to continue. How do I stop ubuntu from asking me my password everytime I wake my computer up?
View 2 Replies View RelatedI want to setup sendmail to alert for Nagios, OSSEC, redmine, ...
I configure sendmail to work with Gmail smtp follow this guide. I disable local delivery in sendmail by adding the following lines in sendmail.mc:
Code:
define(`MAIL_HUB', `xx.localdomain.')dnl
define(`LOCAL_RELAY', `xx.localdomain.')dnl
it works but this messages seems to be stuck in sendmail queue:
Code:
sendmail -bp
...
[Code].....
One of Konqueror's unique features is that i can name a local process as the action in a form. When i submit that form, the local process is executed. Very helpful for certain offline tasks. What would make it even better is if i could find a way to pass some data to that local process from the html page. This could be the content of a hidden input item, etc. Alternatively, if there is a way for Konqueror to create or update a local file with data from the html page, that would acheive the same end.
View 1 Replies View RelatedWhat command would you use to read about the sync system call (not the sync command)? How would you read a local man page for sync that was kept in the /usr/local/share/man?
View 2 Replies View RelatedI am trying to install tilp, a program for the link between a computer and a Texas Instruments calculator. I have downloaded all the packages to a local directory. I tried telling yum to install all the packages at the same time, though, the dependencies still fail to resolve (though they are all in the directory). I don't know if it would be safe to force install without the dependencies (even though I would install them later).
View 4 Replies View RelatedI have an RHEL 5.3 system where NIS logins are working perfectly, but authentication doesn't seem to be working for non-root local users. I can't login either remotely or at the console with a local user, and I can't even su to them unless I'm doing so from root (i.e. when no password is required).
I've reset the password, I've deleted and recreated the user, and nothing. nsswitch.conf does have "files" listed as part of the config, which was really the main place I'd have assumed the issue could be. su gives "incorrect password", and ssh gives "userauth failure". /var/log/secure shows "su: pam_listfile(su:auth): Refused user <username> for service su", and same for the ssh attempts (with ssh in for su, of course). I've reviewed my pam.d files, and they seem to be the same as on a working machine, but I'm not 100% conversant with pam so I might be missing something.
I used Likewise (specifically, likewise-open-gui) to add my computer to the Windows domain at work. I can log into the computer with my domain credentials.
Until I reboot.
If the computer ever shuts down fully, I get an authentication failure when I log in using the domain account. But if I log in using a local account and run likewise-open-gui again from there, everything works. I don't have to rejoin the domain, only launch the program, close it, and log out of the local account. This seems to allow me to log into the domain afterward.
Is there something in specific that I can add to my startup scripts that will connect me to the domain before login?
I have a reverse ssh connection established from a remote machine to my local machine - it is established with autossh from the remote machine - I know it is connecting because I can see the two ssh processes on the local machine - and, when I kill the two ssh processes, two new ssh processes are immediately established. But I cannot login to the port on the local machine. I have tried everything - it simply refuses to connect. This remote machine is miles away and not readily accessible.
Code:
ssh -p 7766 -vvv user[at_sign]192.168.1.108
OpenSSH_5.1p1 Debian-6ubuntu2, OpenSSL 0.9.8g 19 Oct 2007
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug2: ssh_connect: needpriv 0
[Code]...
I'm wondering if there is some way I could utilize netcat or socat to "tap into" this connection from my local machine??? (My ultimate goal would be to get to a shell on the remote machine.)
So I was playing with my compiz with a Intel Graphic card and I enable a effect that caused my graphics to die render my install useless after login, Can I disable compiz before I log in? after I log in all I can do its use ctrl+alt+f2.
View 6 Replies View RelatedI want to disable the login sound, and System->Administration->Login Screen has an option that seems to be relevant. However, it has no effect. I know the file is at [/usr/share/sounds/ubuntu/stereo/desktop-login. ogg]; would I hurt anything by moving it?I have searched Google and gconf-editor, to no avail.
View 2 Replies View RelatedMy laptop running Ubuntu 10.04 insists on automatically logging me in without asking for my password. The only thing is, I've disabled auto login and it shouldn't be doing that.
When I first boot up Ubuntu all I have to do is select my username, no password required to log in. I want the login screen to prompt me for my password for better security.
Here are the settings I already have:
System - Administration - Login screenSet to "show the screen for choosing who will log in"
System - Administration - Users and GroupsI am the only user I have an Administrator level account "Don't ask for password on login" is unchecked, i.e. it should ask for my password on login. If I create a new user with the same settings, that user gets asked for its password. But I don't.
Surely this should be enough to disable automatic login.
I have enabled automatic login in Lubuntu, and have now added a second user, I want to DISABLE the automatic login, or perhaps change the default login. The usual Ubuntu admin window for this does not appear to be available. Where in the conf files this setting is, and or whether there is a GUI that controls this.
View 9 Replies View RelatedI have Ubuntu 10.04 with Gnome. Whenever I put in a blank CD/DVD an icon on the desktop appears named "Blank CD/DVD" and a window appears asking me what I want to do with it. How do I disable the window and the icon from the desktop?
View 2 Replies View RelatedI'm trying to configure vsftpd to just allow my local users to login and be confined to their home directory (and its sub-directories).
Here is my vsftpd.conf:
listen=YES
anonymous_enable=NO
local_enable=YES
[Code].....
I've tried multiple configurations to no avail. I always end up with this same end result.
Is it possible to prevent the disclaimer from being displayed as soon as one logs into a terminal? I am referring to the six standard terminals.
I searched the contents of /etc and googled without much success.
When I used to use ubuntu there was a option at login screen if u are not in the list of users, create a new account now same thing in debian, at the login screen there is written under my name
" not listed? "
when clicked it let u make a new account, i want to disable it.
I'd like to disable the log-in screen sound. Not after you log on. Since it's my laptop I can't just switch a knob or press the off button. The function keys don't work before log-in.. Well not for sound at least.. I guess you could say it's a bug.. unless it was intended. Anyway, without filling a bug report how can I disable sound @ the login screen?
View 2 Replies View RelatedWhenever I boot up my computer, Ubuntu (10.4) brings me to my desktop, then immediately displays a prompt to enter my login keyring. After some searching on the forums, it appears that this is because I set my laptop to auto-login. Am I missing something here, but what does auto-login have to do the the keyring? Why do I even need to enter that password? I understand that many Ubuntu users are picky about security, but why isn't their any option to disable this? It's almost as bad as UAC from Vista, which is one of the reasons I'm dual-booting Ubuntu in the first place. This is an annoying "problem" that has been bugging me since I first installed Ubuntu - how can I change it?
View 9 Replies View RelatedI enabled Magnifier on login screen , then it didn't worked correctly and covered right half of my screen! Now I cannot login and cannot disable magnifier and if I restart my computer the magnifier will start again, How can I disable it?
View 9 Replies View RelatedIt used to be that this was a service that could just be disabled in System>Preferences>Startup Services, but this is no longer the case it seems. I've tried tinkering with the runlevels in gdm.conf, but haven't had any success with it so far. I've tried commenting out the startup code in the gdm.conf as well. Also no luck.
Most of what I've found are older guides for Karmic and earlier, so if anyone has a more up-to-date solution for how to disable the gdm so I can auto-login to a terminal in Lucid
This is the same question refer to:[URL].. On the login screen, I ticked magnifier in Universal Accessibility Preferences. Now I cannot log-in. However for some reason, I even cannot initial terminal by ctrl+alt+f1.
btw, I did this because the log-in screen in 10.04 is not as nice as the one in 9.10. I was trying to see whether I can change the log-in screen. Anyone knows about this as well? Please help me to sort out "magnifier problem" first.