Ubuntu :: Authenticate Shutdown - Other Users Still Logged In
Apr 6, 2010
I installed a few media servers to stream something to my PS3 over the weekend, but now when trying to shutdown the computer, I'm asked to authenticate with a password since other users are still logged in. I installed quite a few programs over the weekend trying to get it to work, so I can't remove a specific one. Is there a way to see which daemons are logged in under a different session? Found it. It turned out to be mythtv.
If there is a simple way to prevent accidental shutdown when the following situation occurs:
Sometimes, I log in on my father's computer to run some administrations' tasks (updates...). For that, I use SSH since I'm frequently far from my parents and what I want is to prevent a shutdown run by my father. Of course, he should be able to turn off by himself if nobody else is connected.
Molly-Guard allows to prevent distant shutdown, my request is a kind of complementary software.
Does anyone know a project which could fit with this request? Do you have simple ideas to write a short code I know bash, perl, python...
When I'm logged into my account, I can't shut down the computer if someone else is also logged in unless I supply the root password. However, if I log out, I can shut down from GDM without being challenged, even though another person is logged in, which could cause problems if that person is in the middle of some work. Is there a way to password-protect the gdm shutdown function if people are logged in?
I use Ubuntu in my office NIS environment and I can't upgrade the whole network to LDAP right. I upgraded to 10.04 recently and reinstalled the NIS client and associated packages, among other things.
I have set up my /etc/nsswitch.conf file so that passwd, group and shadow all have "files nis", I'm bound to the correct NIS domain and I can do "ypcat -k passwd" or "ypcat -k hosts" just fine.
Problem is that I can't log on or su to any NIS user, I just get "authentication failure". I've tried the same usernames and passwords on Red Hat NIS clients on the same domain and they work fine.
Im using linux (Suse 11.1) on my laptop in my new job, however I need to set up my accounts and any account to authenticate using the existing windows ADC server.
What do i need to do precisely. I have kerberos & Samba installed. Do i need both of them or can I just go ahead and set up one.
I've got a Samba server (CentOS)(I swear all my non-work boxes are Ubuntu) that has been working fine in our Active Directory environment for a long time, now that Windows 7 has been forced upon us, we've noticed that Win 7 users aren't able to authenticate to this server unless they access it using the IP address, e.g. \192.168.1.22. We've tried the different Windows 7 registry hacks and nothing makes a difference. We were advised to update Samba and we did to 3.3.8. However, this being a virtual machine, upgrading a clone of this machine did work, the configuration was identical, except the hostname
is it possible to authenticate users logins by a database (postgres, mysql)?for instance: -user types username, pasword, at login screen -OS then connects to server with database and checks if the user is valid. if so, is it feasible to add a time lock function for each user? in the sql, postgres table ? for instance user sandra can only log onto the computer for 1hr at 5pm
is there any solution for authentication of ethernet users.something similar to daloradius for wifi.I dont want to use pppoe. is there any way to connect daloradius with dhcp server, so when certain mac address asks for IP first daloradius will look if it is allowed.
I don't know what happened but sendmail suddenly stopped authenticate my users who tries to send mail. I use slackware 13.0 and sendmail for SMTP with ssl and plain authentication. Imapd works fine. There is nothing in logs just that the client did not issue MAIL/EXPN/VRFY/ETRN during connection.
We are testing the possibility to migrate from winXP to SLED 11 SP1. We have solved integration login and single sign on. But now we have the problem that we are not able to authenticate users against eDirectory. The test enviroment is SLED 11 SP1 workstation with authentication method eDirectory LDAP, default software + Novell client from installation disk + yast2-lum + yast2-linux-user-management
I am using Fedora 10 .Generally to update I open a virtual console by pressing Ctrl-Alt-F2,login as root and give the "yum update" command.Then I continue using my graphical terminal for other tasks from the 'non-root' account..Now my room-mate comes uses my 'non-root' account to browse web for few minutes and then opens a terminal types "halt", ENTER and viola...! My root account seems to be insulted by a 'non-root' user!.When I am doing updates or other important work as root any silly user can just 'halt' my computer. Can somebody tell me how to set up my computer so that when root is logged in no other user can simply halt the computer.
When I click logout or shut down I get a countdown saying I will be logged out or shut down in 60 seconds, then it counts down. I can click the "shut down now" button, but I find this behavior incredibly irritating. When I click logout I would like to logout NOW.
Is there any gnome tool out there that will allow admins to talk with logged in users? Without it being amsn, skype, or gtalk... I'm looking for something like the 'talk' command but GUI based.
Whenever I want to shut down, I have to enter my password, because shutting down while other users are logged in is a privileged operation. Now, I couldn't download an update because the update lock was in use. I'd be surprised if someone had targeted my system, especially because I didn't install any obscure .debs or anything recently, but I'd really like to find out if it's been compromised somehow. Say, by obtaining an overview of all users currently logged into my system or something. Is that possible?
I am wondering how websites like banks are able to determine if you have previously used a certain computer to access the website, even if your router's IP address may have changed and your system's cookies have been cleared. I have users that need to access our HTTP intranet from outside locations. Those locations will have dynamic IP addresses most of the time, so I can't just "allow from [ip]" in my Apache proxy configuration. Originally we considered a VPN, but determined that a VPN will be overkill to access just an internal website, since we do not want external users to have permission to the rest of the network, only the website.I currently have it working over HTTPS with basic authentication against an internal LDAP server, but I want a little more security for such an important website.
crappy diagram: [user]-->(internet via https)-->[apache gateway]-->(intranet)-->[http server]
Friends is there some way to authenticate Microsoft windows users from openldap running on CentOS. I will be very thankful if you provide me step by step procedure.
on my netbook I've tried to make possible for my user to shutdown without needing a password. battery could run low when I'm not in front of it. Editing sudoers has allowed my user to shutdown the system, but Gnome still prompts me for the root password whenever root is logged in too. That's usually the case, because to avoid entering the root password multiple times whenever I need elevated privileges and not wanting to cache the root password, I keep a Root Terminal always open.
I have 2 servers, web server & mail server. they show 2 users in the summary area when I run w or top commands. But the actual list of users logged in (using either w or who) shows only 1 user. ps -ef |grep username only shows my current login as a running sshd process.
So I can find no trace of this other user except in the summary line for w or top. I have no shells or other logins left running elsewhere or abruptly terminated, no gui sessions (these are servers), no tty logins. Do I have another user logged in? Has someone hacked me & covered up most of their trail? Why do these commands show 2 users when everything else points to 1 user?
The line in bold is the security issue. There is only 1 user account on the system. There should only be 1 user logged in, not 2 users logged in. The remainder of the log file lists 1 user logged in, for similar log output. 2 users logged in does not appear again in the log file.
Does the second line of bold indicate that an attempt was made to log in to the system using SSH?
There was an internet connection interruption (no service) around the time of the log file event. The service did return, later.
Does that line indicate that an unauthorized user logged in to the system?
I run a linux file server for my office and we user SFTP for remote partners to login and download files. Is there a way to see if there are any active connections or logins so I can know when it is safe to perform maintenance on the machine?
Since the machine is almost constantly serving large files, scheduled maintenance is often bumped off due to someone either upload
I try to write a script which would kill processes of users who are not logged in. My approach is to find out what users are logged in and then kill processes of all nonsystem users who fail the test of being logged. I use `w` for finding all logged in users, but apparently there are users on the list which `w` gives me who own absolutely no process in the output of `ps aux`. How do I log off those users, since killing their processes wont work (since they own no processes)?
On Ubuntu 10.04 when there are more than just one user logged in, if one of users logs off system hangs with a black screen.
After I reboot the machine and log in again, just after GDM login screen I get a window with a message about PowerMeter crash, with suggestion to 'cancel' and 'log off'. Only 'Log off' works, i.e. I'm successfully logged in.
Last entries from system.log before system freeze are:
Just noticed this, when I am logged into OpenSuse 11.3 under my default user (autologin) I have 3 of the same user logged in, eg when I run top it shows 3 users and when I run the users command it shows the same user 3 times. Is there any reason for this? Do I need to investigate this at all?
I have running on RHL enterprise 4. I want to configure squid users to authenticate against windows 2003 active directory. How do I go about from scratch
I can't seem to get last logged in dat/time for vsftpd users. They are linux users maintained within passwd groups ect ... i think this is because ftp doesn't actually give them a real session. That being true, how do i get the last logged in time for my ftp users?
I want to count the number of users who have logged in multiple terminals ? How will I get this ? I always get the total number of users. How will I get the uniq number of users with multiple logins ?
