I have finally gotten around to installing Ubuntu 10.4, and I really like it, but it does irk me that OpenOffice is installed by default. Is it possible to prevent OpenOffice from being installed?
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Not sure where I got MediaTomb. Probably clicked it in the software center because it looked interesting. Anyway I cannot download or install anything. Any. Thing. I get this error: installArchives() failed: Preconfiguring packages ... Preconfiguring packages ... dpkg: unrecoverable fatal error, aborting: syntax error: unknown user 'mediatomb' in statoverride file
View 2 Replies View RelatedI have a headless Jaunty server that I need to access from both mac and PC clients. If the server has been rebooted, I can SSH into it, but I can not VNC into it unless I unlock the keychain. The problem is that I can't figure out how to unlock the keychain from SSH connections, so the only available method is to attach a keyboard to the physical box and enter the keychain password at the server itself.Is there a Terminal command that I can use to unlock the keychain? I have seen references to the 'security' command but that appears to be unavailable to Jaunty?
Is there an even better method than a Terminal command? I don't want to be putting passwords into the Terminal log if I can help it. Ideally, I would connect via SSH, confirm the keychain somehow, and tunnel in through VNC.
This is a bit of an odd one, it's not so much about using Ubuntu but about *not* using Ubuntu. I am just setting up a new computer for my daughter. I have spent days configuring parental controls and lockdowns and such to stop her from being able to view unsuitable content, download programs I don't want, anything that can mess up the computer, etc. etc. At this age I am going to be over her shoulder 100% of the time while she works anyway, but something that occurs to me is that having set up all this control software in Windows, she could actually override the entire thing really easily by booting from a live CD, USB key or similar, she can keep a whole OS in her pocket and I'd never know. You can only watch so much of the time as they grow up.Can I prevent a computer from being capable of booting from external media without some kind of password? How would you begin to go about that?
View 3 Replies View RelatedI just want to prevent updates from certain repos, which are intended only for installation purposes. Those repos, however, also include updates for officially bundled packages, and i dont want to update them - just want to keep those as official versions.
View 9 Replies View RelatedI do not want my windows to be dragged and placed partially in two desktops. However, I have enabled Edge flipping to move window to next desktop. My problem is with partial overlap. Something which makes the windows stay completely in the desktop, but at the same time allow edge flipping.
View 1 Replies View RelatedI'm in the process of installing the usual Python/Numpy/Scipy/Matplotlib combination. I'm using the installed version of Python (2.7) on Ubuntu 11.04 but I've compiled Numpy and Scipy (and ATLAS/LAPACK etc.) from source. I now want to install matplotlib from the repositories but every time I do python-numpy is installed as a dependency of python-matplotlib. I've tried "apt-get hold python-numpy" etc. and also locking the version of each package in synaptic but both synaptic and apt-get will happily install the packages when requested, I assume because hold/lock version don't work on packages that aren't yet installed.
How can I prevent these packages being installed? Or is there a way to tell Ubuntu that I already have versions?
Since my desktop (Ubuntu 10.4.1 for now) has no need for anyone trying to ssh into it, I want to prevent ssh from starting as a service when I boot up.
If I type: sudo update-rc.d -f ssh-agent remove
in terminal, will that stop the service for all boots (until I run: sudo update-rc.d ssh-agent defaults -- in terminal)?
I've already removed (unchecked) ssh agent key from my startup applications
I have a virtualbox installation on top of CentOS, and I need fairly high security separation between host and guest traffic. The university network the box hangs off uses statically-allocated ip addresses, allocated to fixed MAC addresses (i.e. it eats any traffic with mismatched ip and MAC addresses).
Host OS: CentOS 5.3 64bit
VBox: 3.0.4
Guest OS: Fedora 11 64bit
Hardware: dual NIC, Intel server
Bridged networking, with separate NICs for host and guest
I'm aiming for high-security separation between host and guest traffic. To do this, I would like to to run all host traffic through one NIC, H, and all guest traffic through the other, G. The host and guest have separate, statically allocated, IP addresses, IPH and IPG. The network forces these to be mapped to specific MAC addresses, MACH (the address of NIC H) and MACG (the address of NIC G).
So it's not too hard to write host firewall rules to enforce this policy. The rules just have to state that traffic coming into H must have a destination compatible with IPH, and traffic going out must have IPH as source - and vv for G and IPG. There also don't seem to be any trouble telling the guest to only use NIC G. As a result, turning off NIC G (or equivalently, firewalling it off from host traffic) crashes the network, I have to reboot it to get networking working.
But I can't figure how to tell the host (i.e. CentOS) to _only_ use NIC H for anything else except the guest. Even though we don't see any IPH traffic coming into NIC G from outside, I don't seem to be able to stop the host from starting connections on NIC G. Does anyone know any way to do this - to tell the host that it can only use IPH as its IP address unless traffic is coming from a guest process, and that it can only use address MACH and NIC H?
I've had a couple Ubuntu 8.04 servers hang hard with no terminal response.
After a given time the terminal login screen will go blank automatically. I'd like to prevent that from happening in order to hopefully catch any messages that get output to the screen before these hangs occur. Currently when the server hangs, I can mash the keyboard all I want, the screen stays blank.
I've tried 'setterm -powersave off -blank 0', but that doesn't seem to hold after logout.
I'd like to reconfigure vsftpd so that it does not start on boot (and I can enable/disable it using service vsftpd start/stop).
Though I've seen posts in the forums that stated that upstart jobs can be disabled by moving the /etc/init/job.conf file, other sites commented that the original file will be recreated on updates.
The other two suggestions were to alter the upstart script such that either the process starts on never:
Code:
start on (never
and filesystem
and net-device-up IFACE!=lo)
stop on runlevel [!2345]
[Code]....
So earlier today I was running out of space on my regular Windows 7 partition and I played around with extending it. I ended up somehow deleting grub and messing up my entire system. I've spent the last 2 hours looking for the answer to this and everyone has been saying to boot from a live disk and fix it that way.
Well, I've tried everything, the only way I can boot right now is via USB and it will NOT allow me to. I checked on other computers and even re-installed and formatted by external hard drive to try and get it to work and it refuses. I've changed my BIOS to boot from USB so I have no idea as to why this is happening. Also, I've tried using the "ls" command to find my partition via "ls (hdX,Y)/" and all of them come up as unknown filesystems.
I have taken much time and effort to get Mediatomb working on my new machine running Maverick Server, with GUI. Those of you who run Mediatomb know that it's pretty convoluted to get everything "just right".I have located the three Mediatomb packages in Synaptec and marked them as "lock version" in the hope that they will not be up(side)graded to a slightly different version of Mediatomb, which does not have Javascript enabled however, update manager still insists on trying to make the change to the other version .
View 1 Replies View Relatedjust a quick question: I have an external HD with 2 partitions, one ext3 and one FAT32.When I plug in the HD both partitions get automatically mounted, but as I only use I use the FAT32 partition to transfer data from/to Windows machines (which does not happen so often) I would like only the ext3 partition to be mounted automatically.
View 2 Replies View RelatedI am trying to lock down our application and server with iptables. Anybody have any idea how to prevent accesses to the application from another application? Basically I opened up the ports 80 and 443 for the application server. However, the application points to other apps (ie. database, ldap). I want to limit what it can connect to or who can connect to it. Bascially I can limit who connects to the server itself but the application can still get input from outside servers.
View 4 Replies View RelatedI'm using the Fedora Eee kernel for Fedora 12 (it's an unofficial kernel for the Eee PC), and want to update my system (I just set it up today). How can I update via command line and prevent an update to the default kernel?
View 1 Replies View Relatedi need to restrict access of deleting to directory and partitions os disk? how do i do it?
View 5 Replies View RelatedI have a problem as following: "using iptables to prevent IP spoofing".
View 4 Replies View RelatedI have Googled and searched dozens of forums and mailing list archives for a couple days now, and I haven't found a straightforward answer to what is REALLY required in a Postfix main.cf file to stop backscatter.
A couple of our servers are stil being flagged as sending backscatter. Is it possible to send a bounce message these days without it being considered backscatter?
I keep adding suggested "fixes" to my main.cf file, but Backscatterer.org still says we're doing it.
Here's my postconf -n output:
Code:
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
[Code].....
We are seeing some dropped SSH connections because of which some of the process are failing . The main likely reason for the connection drops is that both the client and server remains 100% busy during a certain time interval and during that time interval we see those occassional connection closed by the server.
[Code]...
I have some pending upgrades, one of which includes kernel 2.6.32-22 but whenever the upgrade gets to running the update-grub command, it gets stuck on "Found memtest86+..." Here's the actual output...
[Code].....
It's been hanging like this for hours today, preventing me from getting any of the pending upgrades. I've cancelled it several times, deleted the dpkg lock files and tried it again only to have it hang all over again.
I'm trying to set up an unprivileged user on some field systems running 11.04 with the standard Gnome shell (rather than Unity), and ideally that user would not have access to the command line. The user can log in through GDM (but not the text consoles) with no password, so I need to provide the absolute minimum of privileges; basically the user should only be able to run one program.
I've already set the /desktop/gnome/lockdown/disable_command_line key with gconf-editor for that user, which successfully disabled the "Run Command" dialog. Unfortunately, even though the description of the key in gconf-editor says "prevents the user from accessing the terminal...", the terminal emulator is still accessible from the Applications menu, and I haven't been able to find a good way of disabling the terminal or removing it from the menu. The only thing that occurs to me is an ugly hack: replace the gnome-terminal binary with another that checks to make sure the user is not the unprivileged one and then starts gnome-terminal.
I will move my VPS account between hosting services. When I do this I am concerned about losing emails sent between the last user's download and when the IP number changes as the change propagates through the DNS.
View 3 Replies View RelatedI have a virtualbox installation, and I need fairly high security separation between host and guest traffic. The university network the box hangs off uses statically-allocated ip addresses, allocated to fixed MAC addresses (i.e. it eats any traffic with mismatched ip and MAC addresses).
VBox: 3.0.4
Guest OS: Fedora 11 64bit
Hardware: dual NIC, Intel server
Bridged networking, with separate NICs for host and guest
I'm aiming for high-security separation between host and guest traffic. To do this, I would like to to run all host traffic through one NIC, H, and all guest traffic through the other, G. The host and guest have separate, statically allocated, IP addresses, IPH and IPG. The network forces these to be mapped to specific MAC addresses, MACH (the address of NIC H) and MACG (the address of NIC G). So it's not too hard to write host firewall rules to enforce this policy. The rules just have to state that traffic coming into H must have a destination compatible with IPH, and traffic going out must have IPH as source - and vv for G and IPG. There also don't seem to be any trouble telling the guest to only use NIC G. As a result, turning off NIC G (or equivalently, firewalling it off from host traffic) crashes the network, I have to reboot it to get networking working.
But I can't figure how to tell the host to _only_ use NIC H for anything else except the guest. Even though we don't see any IPH traffic coming into NIC G from outside, I don't seem to be able to stop the host from starting connections on NIC G. Does anyone know any way to do this - to tell the host that it can only use IPH as its IP address unless traffic is coming from a guest process, and that it can only use address MACH and NIC H? I've been reading route and arp manuals all day, but I can't seem to figure anything on this - mainly because arp and route don't know about host/guest processes, and I guess weren't designed with this in mind...
I'm running F13 with KDE 4.4.4 on my desktop PC. A few months ago I had occasion to run Kalarm (invoked via "Kickoff" app launcher). Ever since that time, the Kalarm icon appears in my KDE "system tray" after I login. I power down my PC when I'm finished using it for the day.In an effort to get rid of the Kalarm icon, I changed my KDE "session manager" (System settings -> Advanced -> Session Manager) settings to: "on login: start with an empty session". But the Kalarm icon still appears in my "system tray" after the next reboot/login.I've also tried right-clicking on the Kalarm icon and selecting "quit". The icon still re-appears after the next reboot/login.Why didn't the session manager setting: "on login: start with an empty session" get rid of the Kalarm icon?
View 2 Replies View RelatedI'm having trouble booting after a recent bunch of updates (haven't been able to boot F12 from hard disk for a couple of days). The boot process gets as far as "NetworkManager daemon [OK]", then just stops. I get this for all 3 kernels that I can choose from the grub menu (2.6.32.16-141, 2.6.32.14-127, 2.6.32.12-115)Mounting the hard drive with a liveUSB, a quick inspection of /var/log/messages reveals that things go smoothly until: etc. until I hit the power button.I ought to mention that I wireless card that requires the Realtek RTL8192SE driver, which requires
Code:
sudo su
make
[code]....
I have a 2 monitor configuration, with the second monitor uses exclusively for mythtv. When I'm not actually watching tv or a muvie or watching visualizations with music playing, I actually use the machine for more productive uses. As the result the second monitor is typically not turned on, might have something to do the the fact it's a crt design, consumes a fair bit of power and does a good job keeping the media room overly warm.
The question is, does Fedora 11 or newer have a means to prevent applications from opening on the second monitor? I've checked the obvious places and nothing jumps out .
btw: According to the nvidia x server settings control panel the second monitor is set up as in twinview mode. This mode was chosen to allow the gpu to do most of the video decoding tasks using vdupau or something as I recall.
is it possible to block an application from using the network? If yes, how? I read it's possible with iptables and with selinux... Also, what about creating a user who can't connect and run the application with that user?
View 7 Replies View RelatedDoes anyone know of a linux utility which will prevent all memory in a forked process from being swapped out to disk? I've seen the 'mlockall' call, but hacking the app sounds like overkill.My reason for needing this is that I'm running Windows XP under VirtualBox on my linux netbook, and I'm concerned there are basically two levels of swapping going on, which on a single dinky netbook hard disk isn't
View 3 Replies View RelatedI decided to hit the update icon.It did not finish updating before the power was interrupted. How I get an Error occurred. stating, " E:dpkg was interrupted, you must manually run'dpkg--configure -a'to correct the problem. E:_cache->open()failed,please report. I am lost how to correct this script error.I am sure it is easy. I can open google earth that was downloaded, but not the web.
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