Security :: Disable First Level Login Via Putty
Sep 4, 2010
Is there anyway I can disable an account from being logged in via Putty, but permits someone else to "su" into the account? For example, an application is being run as "app_account". Because there will be multiple people administering this application and the password is shared for this "app_account", I want to disable 1st level login for it. I want to make it such that only the permitted people can "su - app_account", once they have logged into their personal account. How can I do this? If I set app_account's shell to /sbin/nologin, the users are also not allowed to do "su - app_account".
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Jan 22, 2011
I have tried everything to disable automatic login from the login screen (gdm). I've changed my password, I've changed the settings in System -> Admin ->Login Screen, and I've edited /etc/gdm/custom.conf (gdm.conf doesn't exist, but I created it just in case!).No auto login is set up, but I can't get it to ask for my password. This is affecting my ability to switch sessions, as I can't switch sessions without clicking on my name in gdm, and because it's set to auto login,
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Feb 17, 2011
How do I disable showing Usernames? I want to be prompted for BOTH un and pw. If it is necessary I could just change it so that it boots into a fullscreen terminal so that you would have to input "startx" and then username and password. Or I could just change it through gui or 3rd party software.
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Feb 25, 2011
I want to disable the remote login for particular user id in linux server.
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Apr 4, 2009
Remote root login is enabled. How do I disable this
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Sep 28, 2010
How can I disable the password request when i login? Not the password for the user but the password to connect to the net?
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Mar 18, 2011
I'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.
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Mar 13, 2009
I am not able to login to server from console attached to server, every time i enter username & password but it again asks for username & password. But when i try to login to server from remote machine, login happens properly.
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Feb 2, 2011
I've created a .bat file with this line: start C:USERSPuttyputty.exe -ssh user@server.com -pw password
That opens a putty session and logged in it with the user and password i've already specified. But now, I want to enter a simple command like "ls -l" for example.. How can I do that?
I've also tried plink...The line in that case is this one:
start C:USERSPuttyplink.exe -v -ssh user@server.com -pw password -m UNIX_commands.txt
and in that file "UNIX_commands.txt" I've added the following lines:
cd /projects/test
ls -l
all works fine (the commands are executed) but i can't see the putty session... all i can see is the verbose in my DOS windows of the last line "ls -l"...
The putty session vanishes away. How can I have the session opened and list the mentioned directory.
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Dec 21, 2010
I setup logging in through putty client with keys, and password disabled, could log in from all machines on my network (xp and 7) with putty.When I finished hut down the server.Today I turned on the server box and thought I'd try logging in through putty. It kept telling me the server was rejecting my key.I plugged in a monitor and keyboard into the server and logged in via password then had no problem logging in through putty client.Question is, every time I shut the server down do I have to plug in the monitor and keyboard, then login, to be able to login remotely?
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Jan 29, 2011
I would like to learn basic linux commands and editors (eg : vi). Am using windows and it is difficult for me to install linux in ma laptop. So is there any free linux login servers available in internet so that I can login to server with putty and try using basic linux commands and editors.
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Oct 9, 2009
In level 3, I can successfully auto login a user into x window.
but how auto login works in level 5?
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Jun 6, 2011
I'm trying to open port 8080 on my application server. I've included it in my iptables; however I still cannot access through ssh nor putty and it doesn't show up when I netstat either.Here is my iptables-config:
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -i eth0 -s xxx.xx.x.0/24 -j ACCEPT
[code].....
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May 15, 2010
I am trying to setup a putty session to putty from one Ubuntu machine to another. I know how to setup to connect to the machine from Windows and I am using the same settings for the one I am trying on the Ubuntu machine but it fails to connect. It fails immediately so I believe that putty is not able to find ssh. Is there some configuring that I need to do.
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Apr 6, 2010
how can i make apache to run in runlevel2
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Aug 10, 2010
For some reason I can no longer login to root when I boot to runlevel 3. So I have to login to my user account then i could su root then login.
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Feb 2, 2011
Main problem: newly installed Suse 11.2/Gnome from DVD i586 goes to white screen after auto login. I re-installed once with same results. I have limited understanding of linux.
System: Biostar M7NCD Ultra mainboard with NForce Ultra 400 chipset, AMD Barton 2500 (overclocked), GForce FX5200 NVIDEA video.
FYI: I used this exact video card on an older mainboard and ran linux with it no problem and all hardware checks out okay when I drop in a HD with XPpro on it, which makes this a linux software problem by my reckoning - video setup most likely. I can boot to the green Startup Options screen and then my ignorance starts to show.
I wanted to boot to level 3 then try some things (init 3, sax2 -r) I've read about on this forum and from www search but I'm password blocked in level 3!? Install only asked me for one password and it doesn't work here.
How do I deal with the level 3 password issue?
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Jun 9, 2011
How-To set the mixer volume level at system startup or login. A funny story that led up to this how-to first...
I made the obvious mistake of leaving my volume level set to nearly maximum. Of course, Ubuntu's default behavior is to restore the mixer to its last known state - a point of much irritation at that moment. This had been a problem in the past as well, and today was the last straw. So, I did some research, for quite some time I might add, and decided to be a good community member and share my findings. It seems that there are all sorts of opinions around the web. The dominant opinion is that a mixer should always be restored to its last known state, that this is all well and good, and why would you ever want it to work any other way. Lots of people suggested that the startup sound be disabled, which was not a terrible solution, but was still a work-around as it means that the next sound bite to be played is the alarming one.
Needless to say, I wanted to find out what I would call the "proper" way to set the mixer level at startup. As my laptop uses PulseAudio, and my office desktop uses ALSA audio, the methods were different. My focus was for PulseAudio as that was the original purpose. I note here that my method for ALSA is less detailed as it is not the default for Ubuntu audio these days. So, if you are using ALSA, you might have to be a little creative to make my ALSA note fit your needs. I have attached 2 files to this post, one for ALSA and one for PulseAudio.
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Jul 19, 2010
I'm planning a fresh F13 install, with separate partitions for /boot, /home, /tmp, /, and swap. All but /boot will be logical volumes, and I'd like to encrypt all but boot. If I encrypt the underlying partitions, is there any reason to also encrypt the logical volumes themselves?
my system will be:
HP dv6-3040us Pavillion laptop
AMD Phenon II
4GB DDR3
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Aug 7, 2010
As per our requirement, I need to implement a Secure FTP server for around 500 users which includes security level on both - Transfer and Rest data. Apart from this I also need the following features -
1. Size quota on Users & reminder mails for the same
2. Password expiry notifications and user interface to change their password within specified time interval
3. Aging of data - After specified time, data will be moved to some other location from their home directory
4. All type of log maintenace for each file and user and log exporting
5. Uploading & Downloading speed consistency as per server level.
6. Read-write interface for user and read-only interface for their client for the same account.
7. Backup and Recovery options.
As of now, I am using VSFTPD which does not give these much of features in combine.
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Dec 22, 2010
i am trying to setup a very basic samba share on RHEL.after editing smb.conf ,testparm output is ok,(though it shows STANDALONE SERVER.)the directive i have used are
workgroup=MYGROUP
hosts allow=192.168.0. //my network
[storage]
path=/var/ftp
[Code]...
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Jun 10, 2010
i need to shred (or at least do a low/high level format) the drives before giving them to my parents (because they know about undelete and stuff). so, what apps can i use in ubuntu to do this?
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Feb 2, 2011
I know that this is a linux forum, but I need to tap the brains of folks that have experience in this filed. My wife is the assistent IT director of a large community college in Pittsburgh, PA. They are running 4000-5000 client PC's. between the labs a nd faculty, across multiple campuses. They are rolling out Win 7 64 bit across all machines. They have 1/2 the PC's on Forefront and 1/2 on TrendMicro. They want to re-evaluate the AV solution, and are unable to find any decent review or tests for Enterprise level AV/spyware/malware solutions.
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Jul 13, 2010
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.
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Sep 19, 2010
ENV: openssh-server-5.4p1-1.fc13.i686 Problem: I am unable to ssh using Putty (when using ssh-auth/pki) to a fedora box . I get the message: Server refused our key. Here's what I tried so far:
- Tried generating rsa (as well as dsa) keys on the linux server and put the generated public key in the ~/.ssh/authorized_keys. Then I converted the private key using PuttyGen.
- Also, tried generating keys using PuttyGen and then converted the public key and placed it on the server
- Configured the sshd server (ssh_config) for using RSAAuthentication=yes. Tried all combinations and purmutations; however, I still get the "Server refused our key" error.
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Aug 10, 2010
I've been able to kludge a kill script which finds the correct pid for the kdeserver (or gnome server) after my system comes up in run level 5 so I can drop back to run level 3 mode. Lots of experimentation showed me that using telinit 3 and telinit 5 would occasionally leave the video memory in a mess and I would have the black screen of death.
I set the security parameter setting to autologin for me since I am the only user of my machine, but I still have to kludge the default setting under sysconfig (the DEFAULT_WM) under Window Manager to pick a certain window manager, so it takes time to manually switch the desktop.
Right now I can leave the gui and drop back to cli, but painful experimenting showed me that killing the X server is a no no. Right now I kill the kde server, which sends the SIGTERM to the X windows manager, which then figures out that it has to shut down.
Questions: Is there a better way of doing this? Apparently openSUSE figures that we have multiple users logging into the gui desktop, so the gui is always kept running and a login window with the desktop manager option forces the user to login in. With autologin, this never happens, but no choice of desktop is possible on the fly.
Can some type of script be set up to painlessly enable this to happen? And what is the best way of bringing either the Gnome or KDE desktop manager down gracefully? I do get lots of error messages as the system attempts to recover and X shuts down. It appears that apparently the single user with autologin is left out in the cold.
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Feb 6, 2010
I want to install a software called TinyOS which is an operating system designed for wireless sensor embedded networks in my account. The problem is it has instructions to install the software as an administrator since i'm not an admin of the department network i can not able to install. Is there any method to install this software as an user level rather than admin level.
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May 8, 2010
How can I adjust the levels at which the battery is considered to be critically low?ight now it seems this is set at 5 or 10%. I want to make it 20 or 25%This is for Gnome. I am using Lucid x86
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Jan 15, 2011
hello everyone, im having a problem when my computer enters in the run level 4 as the default when i start slackware. The strange thing is that it not seems that is a X window problem, it looks like more like a configuration problem in some part of the kde script to initialize the log in, because if i manually start the X service it works fine, i dont know what is the source. Thank you in advance for the help.
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Jan 6, 2009
I want to know what are the advantages and disadvantages for accessing spi(serial peripheral inerface )from kernel level and user level. like methods of doing it, speed ,memeory utilization etc
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