I know that Ubuntu doesn't need antivirus, and a firewall isn't imperative.
I would, however, like to know what I could do to make my Lucid box a bit more secure, as I'm using it as my work system.
Ok, one more question on nameserver security. So I was reading this post and it recommended not setting a defined outgoing port for your nameserver due to the Kaminsky vulnerability.What is the proper way to lock down a nameserver, but avoid the vulnerability of only allowing incoming and outgoing requests on port 53
View 3 Replies View RelatedI installed DansGuardian. In order for it to work I set the system wide proxy. However it is really easy to get around DansGuardian by going to preference proxy setting. How do I password protect this setting so it requires a password to change proxy setting? Preferably a different password than the normal sudo password if possible. If not I at least want the sudo password protecting it! I run multiple browsers so doing it via the system rather than the browser made the most since.
View 5 Replies View RelatedI need a file locking software or atleast any command for file locking
View 1 Replies View RelatedI have a 500 gb external hard drive with tons of personal files on it. Other people at home just grab my hard drive whenever they need to transfer files. I feel so disrespected. I also want to protect myself from actually losing my hard drive to a stranger who will compromise my data.
I'm thinking of encrypting, but I'm currently too busy to explore (the options seem to be hard to use) and it seems to be too much to encrypt a 500gb hard drive
What are my options in "locking" my hard drive. I don't mind if it's going to be readable only on Ubuntu. That could actually be a plus
I run a compute cluster with only a few users. Occasionally a user will accidently run a job on the master node that runs out RAM/swaps then hanges up for a while.In /etc/security/limits.conf I have set memlock to 7.5GB (master has 8GB RAM) and maybe that is what lets the machine come back rather than hanging completely? Is this the right setting to physocally limit a single user from asking for more RAM than the system has and bringing down the system? Should I set this to 2GB or so or is there something else I can do??
View 4 Replies View RelatedI just did a fresh install of Kubuntu 9.10. The GUI regularly locks up. I can SSH to it from another machine everytime it locks up. Top shows Xorg consuming 99% cpu. I think downgrading the nvidia driver to 173 from 185 helped reduce the lockups. Before they seemed very random and very often. Now it seems to happen when copying a large amount of files over the network but I'm not entirely sure. It ran the electricsheep screensaver all day today with no problems and the RSS euphoria GL screensaver all day yesterday. If I copy 2GB of files from one local directory to another no problem, if I do it through cifs mounted samba shares it will lock up for sure. Small amounts seem ok. Apt-get install has had some lock ups too.
I don't really know how to trace what's going on beyond installing ssh and finding out that it's totally alive inside. I don't know what to look for in log files nor which ones to look at. I didn't recognize anything wrong in Xorg log. In the system log I look for the time gap between when it locked up and I shut down and when I rebooted but I didn't notice anything.
I first started experiencing it when I would leave my computer logged in overnight.I would come in and find the screen frozen and flickering. When I ssh'd into the machine, I could see that Xorg was using 100% of the CPU and a ton of memory. I could kill kdm, but not Xorg. Only a full reboot would cure it.When it would reboot, my second monitor sometimes would not work and it would take several reboots to get it up and running. Recently, I was working in matlab and had Xorg freeze on my numerous times...always when I had my second monitor up and running.
The card in question is an Nvidia 9800 GX 2.It almost seems like GPU0 (the one running the second monitor) is dead or dieing and is causing instability when it is up and running..but I've also heard that X running away and locking up the system is a known bug.
I looked for this but couldn't find it.
When Gnome starts, I would like to auto-login a user account, but I and the screensaver to lock at boot. I am using the gnome-screensaver.
So is this what I get for not upgrading because the support for 8.10 ends on 4/30? I have 8.10 but it is locking up immediately after logging in. It's a 64 bit system and has worked flawlessly up to this point. Ctrl-alt-BS does not work. Alt-Sys-K does not work. Alt-Sys-R, E, I, S, U, E does not work. Only turning off the power resets the computer. Memtest turned up nothing.
View 1 Replies View RelatedI run 6 machines at our local library with Ubuntu Lucid. Here is a problem. We use a network printer accessed through the ethernet cabling system. It isn't attached to a computer. I want to set it up so the Ubuntu computers find it by ip address, it has a static address. Then I would like to lock down the printer config as each week other printers show up there, all basically the same printer but only works if the patrons pick the correct iteration of it and it doesn't always stick to the default option I haver set up. So people get confused and then pick another one and no prints. I want them to click print and bingo only one printer shows up and it is the ip address I have set up. Ubuntu seems to love to add numerous copies of printers and in this situation it is creating havoc. So can I somehow set a command to lock the printer config and eliminate all this confusion? I hope this is clear as it is a fairly complicated issue.But is reflecting poorly on Linux to people who come in and I want it to b e very stable.
View 9 Replies View RelatedAfter locking desktop not asking for password I am using Ubuntu 10.04 TLS from a pen-drive (running Ubuntu example). I created a new user account When I lock desktop it correctly turnout the screen (everything go dark). When I move the mouse Ubuntu returns perfectly. My problem is that in any time I am not asked for password. I want that Ubuntu while locking ask for password to login again. I already tried configuring lock down and lock properties (application) via gconf-editor.
View 3 Replies View Relatedfirst of some specs;
kernel 2.6.35-23-generic
64 bit amd turion dual core
toshiba satellite about 6 months old
4gig ram (oddly only 3.1gig shows up :/)
ubuntu 10.10
ATI GPU
how to get it and i will get it
alright the problem is every now and then my system locks up and i try things like ctrl+alt+Fn and ctrl+alt+del and ctrl+alt+backspace but nothing works exsept when hold down the power button for a hard reset and occasionally somthing else happens that can only be comppared to a BSOD in windows but with out the blue screen it just goes to a screen with vertical grey stripes for 2 seconds ish then reboots
so i dont have the slightest idea of what it could be tho i think it could be something to do with the graphics chip maybe?
its happened quite a few times both in 10.04 and 10.10
if you want system logs i can attach them when ever
I noticed in the last month or so that Ubuntu keeps on randomly locking up and freezing.Most of the time Crtl+Alt+Backspace (zap X) does not work and I have to power down my PC manually.What has happened good old reliable Ubuntu? Its starting to p.i.ss me off now but luckily I haven't lost anything of value as a result of these lockups.
View 9 Replies View RelatedI have used the guide that makes ubuntu look like osX, but is there a way to lock the icons on the dock, so they can not be removed?
View 2 Replies View RelatedI've tried to configure ubuntu 10.04.2 to start up without having to enter a password, thought I did all the correct things yet I get this 'lockring' thing where I still have to enter my password every single time I start up. I get past the first screen where I was having to enter a password when selecting user, (actually never set up a user, just using whatever the primary 'user' is, what is it called?)How do I disable the request for a password for this lockring thingy?
View 9 Replies View RelatedI have a new PC with 9.10 desktop . It's running Zoneminder. For some reason it will not run more than 24 hours with out locking up . It's set up stand alone with no screen or keyboard. I hacked the vga port with 3 resistors so remote desktop works. I did this on 2 other systems and it always works fine. I want to ask where can I look in the logs to try and find out why this beast dies after just before 24 hours of run time.
View 2 Replies View RelatedRecently upgraded to 11.04 - everything was working well in 10.04. However, running programs in wine (or running wincfg) now causes the xserver to lockout after a random interval. At best, I get dumped back to the gdm, at worst it needs a hard reboot. I've tried using wine versions 1.3 and 1.2, but both cause the same problem. I've also tried installing ldfontconfig from 10.04 as I read that this was a resolution for people having similar issues, but no joy.
I'm running 64 bit ubuntu, and have an ati graphics card
This is a real deal breaker for me - I need MSOffice, but really don't want to go through the hassle of downgrading to 10.04.
I am wondering if anyone has figured out how to turn off the file locking in openoffice 3.2. I have been searching the net for solutions, trying out the fixes, and as of right now I have not been able to find a way to stop the creation of lock files.
I have tried editing both /usr/bin/soffice and /usr/lib/openoffice/program/soffice as described in the links (below), but this has not helped.
Here are the relevant links I have found
[URL]
According to this thread, the method I tried (setting SAL_ENABLE_FILE_LOCKING=0) was based on earlier versions of openoffice.org It no longer works because as of openoffice.org 3 the file locking is built into the program.
[URL]
I installed Ubuntu yesterday to try it out, but encountered some freezing/locking issues. Seems to be related to the video card. I'm running Ubuntu in low graphics mode, but wanted to install the proper ATI drivers. I went to the ATI website for my X1950 (sucks, I know). Downloaded them just fine but when I run them nothing happens. I'm used to Windows so I'm probably doing something wrong.
View 9 Replies View RelatedI'm having difficulty disabling the screen lock feature when resuming from suspend in Xubuntu 11.04 x64. The screen lock seems to be implemented in xscreensaver, so I disabled the screen saver in the Settings Manager. This did not work. In the 'Power Manager' section of Settings Manager, I unchecked "lock screen when going for suspend/hibernate' and this did not work. I found a possible workaround in a bug report that seems to describe the problem I'm having: [URL] but the solution offered there (install gconf-editor and disable screen lock from there) did not work. The bug report states that the problem was fixed in xfce4-utils 4.4.2-1ubuntu1, but from what I can tell the version of that package in 11.04 is newer than that. The only thing that seems to work is to completely uninstall xscreensaver
View 1 Replies View RelatedI would like to disable the screen locking for hibernation only, in Kubuntu 11.04.I know that there is an option in the KDE Control Center, but I believe that it disables screen locking for both hibernation and sleep.Does anyone know of a way to do this (I'd be perfectly happy with a hacky solution)?Does anyone know what scripts are run when the "sleep" or "hibernate" buttons are pressed?
View 3 Replies View RelatedI've recently installed F15 on my old thinkpad X41 to give it a go after sticking to ubuntu for quite a bunch of years now.
Somehow there seems to be a problem with the installation tho: the screen freezes up (as does the keyboard) after a while using it - not many programs open, a couple of workspaces enabled, no memory or CPU stress whatsoever - and all i'm left with is a moving mouse cursor. Ctrl + alt + F2 doesn't work and the only solution is to restart the laptop again.
Tried the fallback mode and same thing still happens, so maybe its not a graphic card issue.
My computer keep locking up when I try to open a new tab in Google Chrome. It locks up when I do other stuff too but it does not stay locked up. When it gets locked up from Chrome I have to fix it by doing Ctrl + Alt + Backspace. It only happens sometimes though. I can open new tabs sometimes without it locking up. I know it has something to do with my graphics driver (I have an ati). When it locks up I can't do anything and then like 10 seconds later I can move my mouse but that's it, everything else is still frozen. That's when I do Ctrl + Alt + Backspace. Here is what the messages log file says:
Quote:
Jun 22 17:47:31 hostname kernel: [12767.018056] radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
Jun 22 17:47:31 hostname kernel: [12767.018058] ------------[ cut here ]------------
[Code].....
I changed the real host name of my computer to hostname.
I installed with no problem. I have 2 hd's one with winxp3-32bit the other with debain-amd64. When i move a window on the desktop or try to scroll in a window the text gets out of whack and computer locks up.
asus a8n32 sli deluxe mobo
2 nvidia 7800gt's...in sli
segate barraccuda 500g hd(winxp)
wd 200g hd(linux)
I am going to write two or more programs that will take control of the same resources on Linux. What are the common methods/functions that can do locks/synchronizations in C?
View 1 Replies View RelatedI have to run a graphical session for using something with wine on a server (unfortunately :((( ) and I'd like to run a TWM session. As I would like to lock the session, I settled things to log on from XDM. However, I can't find anyway to lock the session. Is it possible (I guess yes) ? How can it be achieved?
View 3 Replies View RelatedIt's getting really annoying now. If I leave the netbook idle for like 2 mins it will lock the keyring and ask me to log back in.
Is there any way I can disable this?
I'm looking for a version of, or equialent to, Predator for Ubuntu 10.10. This program sets a USB drive as a key to the computer, locking it when removed. I've had no luck in finding an equivalent for Ubuntu, and the site does not have a version for Linux of any kind.
View 2 Replies View RelatedI added the rpmfusion repos so that I could install the nvidia drivers and downloaded whatever updates appeared. Initially after rebooting, I kept getting "No root device found" which I've managed to solve but now it keeps locking up after "Starting atd". That actually manages to load and then it locks so I'm guessing that it's "S99livesys" that is causing the problem.From googling, this appear to be a problem with certain kernels and can be resolved by either using an older kernel image or turning the process off in the command line. My problem is that this was a fresh install so there's only one kernel image so it's impossible for me to use a different one. For the same reason, I can't get into the command line.
Is there anyway to get around this without re-installing?I don't want to have the same issue if I re-install?Can I download the kernel images and just place them in /boot?