Ubuntu Security :: Can't Get Respond Through Normal Channels?
Apr 10, 2011
I can't get respond through normal channels, all I can use is my phone. My keyboard is disabled. My PC is pretty much a paper weight. Both of them. The only way they could be getting in is through the wifi. I don't know if there is anything I can do. My recovery programsare not accessible. Even onstartup. Is it possible to clear the hard drive another way? I've heard fire purifies, I couldn't get another disc to boot up to reinstall ubuntu. Please text me any ideas, but please be specific with command lines, I have trouble with all the () and / [ and where they go.
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Jun 24, 2010
I've installed RPMforge and Smart Package Manager.
I had to create my own Centos 5.5 channels to sync yum repos and smart channels.
Here's the Centos 5.5 channel file for Smart:
Just shut Smart PM down, copy this file into /etc/smart/channels, and restart smart.
Smart should then detect the new channels (repos) for Centos 5.5
Update your channels in Smart, and you should then have yum repos and smart channels both in sync, looking at the same set of packages.
Copy this to CentOS-Base.channel, and add it to the /etc/smart/channels directory.
# CentOS-Base.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
[Code].....
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Nov 5, 2010
Quote:As the line between securely hosted and controlled enterprise applications and cloud-based applications continues to blur, there's more "legitimate" traffic between corporate networks and the Internet than ever before. This opens up new vectors for attack by hackers nd cybercriminals as more traffic types are allowed through corporate firewalls. The result is an increase in diversity of covert command and control channels, which hide inside legitimate traffic in order to bypass perimeter security. These C&C channels, used by malware ranging from simple spambots to more sophisticated rootkits, vary in the maliciousness of their intent from casual hacking all the way to advanced persistent threats (APT) and industrial espionage.
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Oct 15, 2010
I changed my password in the last few days using passwd. I still haven't gotten used to typing the new one, and entered the old one by accident to unlock the screen saver. I've been able to do this a bunch of times, and I'm quite sure it will still take the old password.This seems to be a serious security issue, and I'm not sure where I should raise this. I hope this is the right forum.I am using Ubuntu 10.04.$ uname -aLinux thunder 2.6.32-25-generic #44-Ubuntu SMP Fri Sep 17 20:26:08 UTC 2010 i686 GNU/Linux$ gnome-screensaver --versiongnome-screensaver 2.30.0
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May 22, 2011
love security/pentest tools. This script adds ALL the tools from the Security Spin, plus Metasploit. Feel free to modify it if need be.
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May 30, 2010
Is it possible to install security lab menu on a normal Fedora 13 installation? I don't want to use security spin.
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Nov 16, 2010
I was under the impression the Linux (in my case the Fedora OS) is very secure. However I've learnt with deep concern that that one can have access to the system during system startup i.e one can give various startup directives and bypass the normal login UI to have direct root access.
Is there a way to disble this so that the directives during startup are fixed and cannot be altered. I would like to make the system secure to the maximum extent possible.
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Feb 2, 2010
Strange thing happend two days ago. I just wanted to reboot my computer and now I'm no longer able to boot o0. My system is runnig with a full encryption with luks/cryptsetup. I'm using a passphrase to unlock my first partition and it will unlock the others by itself. So far so good. But now it doesnt work anymore... I'm not sure what I did before, but what I know, I didn't change anything! about cryptsetup. I did only a little "update" with the recommended packages from the repositories (guess only 4-5 updated)
I already checked with live cd and same thing there. Not able to unlock any device (what seems strange to me, cause there are 4 of them and all corrupted at the same time...?)
I always get the error message: unlock failed, bad password or options? (on boot) Command failed: No key available with this passphrase (live cd)
First thing I did was checking wheter all modules are loaded:
Code:
ubuntu@ubuntu:~$ lsmod
Module Size Used by
sha256_generic 11580 0
[Code].....
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Jan 17, 2011
I'd like to know if something like this already exists :have an ecryptfs encrypted user account on a laptop that accepts two logins, 1st logs normally, the second triggers a system format
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Jan 25, 2010
Take a peek at this:
Code:
Jan 23 20:15:01 localhost CRON[22629]: pam_unix(cron:session): session opened for user root by (uid=0)
Jan 23 20:15:01 localhost CRON[22629]: pam_unix(cron:session): session closed for user root
[code]....
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Mar 24, 2010
Its been two days over, after my search started . But I didn't find answer any where ?. I need to call chroot as part of normal user, but to my surprise it can only be called by SUper user with CAP_SYS_CHROOT capabilities. I am not sure how to add this capability to my user .
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Dec 30, 2010
I've a Linux box with few users (with shell). I would like to prevent normal users see all the processes running on the box. How can I implement this?
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Aug 2, 2010
Running Ubuntu 10.04 I noticed my hard disc rumbling for longer than normal and louder. Not doing anything demanding to cause hard disk activity like this so I was suspicious so I checked my process list with 'top' command in the console terminal. At the top was mount.ntfs running. Eventually it stopped running after 20 seconds or so. At the time I have not been accessing NTFS filesystems, but I do have them. I have a dual boot Ubuntu 10.04 and Windows 7. In Ubuntu I've mounted the Windows main C drive and on the same hard disk a partitioned drive for sharing files between the OSs. I know mount.ntfs is a standard program but was it being run on my machine, instigated externally here? Was the running of mount.ntfs an attempt from outside to hack into Ubuntu and the mounted Windows areas of my machine via a backdoor connection or vulnerability? I've restarted my machine since then. Are there any logs I can check for malicious attempts to break in?
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Oct 15, 2010
One user in my company wants to run some flush cache queries on a MySql database, it needs "reload" privileges of Administration, how secure is to give this rights to a normal user ?
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Jan 6, 2010
I was just wondering about the output of who. When I run who with from a terminal in X the output is something like this when I should be the only active login, in this case as root:
PHP Code:
[code]....
If I run who from the console with no X started I only get
PHP Code:
[code]....
Is this normal and what the second 2 outputs mean exactly,I understand that one of them would relate to display 0, but I'm not sure which or what the other would mean then.
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May 21, 2010
when I try to access the #ubuntu channel on [URL] using the default settings within Xchat I receive the following -
* Looking up irc.freenode.net
* Connecting to irc.freenode.net (32.1.20.24) port 6667...
* Connection failed. Error: Connection timed out
I can connect to other servers and channels fine just not this one is there a way to get DockbarX working within Avant Window Navigator 0.4.0?
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Apr 11, 2011
I am setting up a MythTV environment to switch from Windows based MediaPortal (with a high number of disturbing bugs). Yet, I have three difficulties, which I want to discuss with you. They are:
- No audio via HDMI [URL]
- Video resolution seems to change during video playback [URL]
- Channels cannot be found via DVB-S
As you can see, I have created three posts to keep discussions focused.
Alltogether I have the following setup:
- AMD 5050e CPU
- 8 GByte RAM
- Biostar TA890GXE
- Samsung LE40M86BD, connected via HDMI (and only HDMI)
- Mythbuntu 10.10 with proprietary drivers installed
- Technisat Skystar HD2 DVB-S card (two times)
Now, here is the problem:
when I try to scan for any available satellite channels to use in Myth, I cannot find any channels. I have invoked "scan -V -l UNIVERSAL -s 1 -a 0 /usr/share/dvb/dvb-s/Astra-19.2E" with the following result:
Code:
scanning /usr/share/dvb/dvb-s/Astra-19.2E
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
initial transponder 12551500 V 22000000 5
>>> tune to: 12551:v:1:22000
[Code].....
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Jun 20, 2011
I have a Yuan/Avermedia MC770 mini PCI hybrid card. When I installed ubuntu 11.04 for the first time it found an update for it automatically which I was quite happy about. I installed Me TV and thought so far it was all going quite well. connected it to a roof top aerial and it wouldn't find any channels what so ever Has ubuntu really found and installed the correct drivers? I tried VLC and Media player no result.
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Mar 16, 2010
Right now I'm trying to get MythTV to bring in my channels. I can see all the channels when I use the Watch TV feature on the frontend, but in the backend I can't get it to work.
In the input COnnections>Television section, I am set up for Schedules Direct. My "Scan for Channels" button is disabled, so I can't use that. However, the "Fetch Channels" button, though enabled does nothing. It doesn't depress when I select it or anything. I can't figure out why. I know my username and password are entered correctly, so I'm drawing a blank.
My video source setup is also set with SD.
I have an Analog V4L capture card selected in the capture cards section. It's a AVI TV Wonder Pro (an old card, but free). It seems to be set up correctly since I can "Watch TV" with it.
In the channel editor, I also do not have the option to do a channel scan. It skips right over that button.
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Apr 8, 2010
i installed Ubuntu 9.10 and it seems i can't have 5.1 sound playing, i've searched a lot but i still haven't found a solution to my problem. tried to change the default channels from 2 to 6, as well as the default-channel-map and much more but still nothing works..
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May 24, 2010
I have installed mythbuntu 10.04 and installed my tv tuner (saa7130). I can play games on composite but cannot scan for tv cannels. how i can scan for channels because he cannot find a single channel (I think this is weird) ?
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Aug 15, 2010
I am trying to configure my Kubuntu desktop since some time to have Mumble working perfectly... It was running in the past, i re-installed some days ago and now i have a huge problem. Basically, capturing the microphone works and it's sent to Mumble, however everybody also hears my desktop sound. I tried adjusting channels in KMix with no luck. Also i don't understand why the capture channels are enabled and must stay at minimum volume...
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Aug 16, 2010
I'm running a standard 10.04 install with Gnome, but wanted to try out KDE 4.5 since it just came out. Now I installed KDE through the normal software channels and this installed 4.4.5. The question is how do I now upgrade to 4.5 as it appears 4.5 isn't in the stable ubuntu update channels?
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Oct 9, 2010
I have recently downloaded the XChat IRC program, and I want to add a network, server and channel. However, I'm not entirely sure which goes where. I have made numerous attempts but all have shown the message that it could not be connected to and that I should make sure I spelled it correctly (which I have). If anyone could help me find the proper fields to put the information into, I would be very grateful. Here is all the information I can find on the matter:
Server: irc.esper.net
Room: #tigIRC
URL: irc://irc.esper.net/tigIRC
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May 14, 2011
I was asking around in some IRC channels earlier trying to develop some thoughts on how NFS is better than CIFS. I set up a FreeNAS file server, and that's where all of my data now resides on a pair of raided drives. That way my main desktop, which is kind of a power hog gaming rig, can be powered off since I pretty much live on my laptop now. Anyway, I began to tinker with CIFS and NFS. Since some family members in the household use Windows, I definitely need CIFS. But I wanted to bounce back to NFS too and check it out.
While I do think it's nice I don't have to worry about authentication to the NAS box when using NFS, it's still a little scary. Being that it's more of a trust method instead of actual authentication, truthfully all a user needs to get into your data is the path to your NFS share and a matching UID. I mean, am I wrong by saying this? Sure, it may seem like NFS is convenient, but this angle of it is a little scary. I just don't feel like that screams "secure."
On the flip side, you have CIFS, which uses a user authentication level. So I hit my little shortcut to my NAS and it asks me who I am. I log in and bam, I have connection. I can browse other folders on the share, etc. This is convenient because I do have a "public" share on here with a generic user. That way if friends come over and want to transfer something to me, I have them drop it in the public share and I later transfer it accordingly. Since there is a user level authentication, this to me seems a little more secure.
Speed wise I was a little concerned, as some users have said NFS is faster than CIFS. Well, they might be right. But I did a few bench tests here on my laptop, using the same exact share except one with CIFS one with NFS. I stayed in the exact same location and transferred the same 300mb file in each instance.
NFS - 1.7mb/s
CIFS - 1.5/mb/s
Not exactly enough to warrant a huge argument over, so I leave that argument along the road to be forgot about since it doesn't really have any bearing on this situation. I like things about both NFS and CIFS. I just want to know why is it "not optimal" to use a full blown CIFS setup even if you're using 100% Linux systems.
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Apr 11, 2010
It doesn't matter if I set the audio to 5.1 or 7.1, the center and LFE are silent. I had the same problem in 9.10 but I could work around by using the alsamixer to set the center to 90%, quit, then set back to 100%. This doesn't work in 10.04 as the controls in the alsamixer can't be changed. Is there any way I can get the center channel working? All I can do at the moment is set the sound properties to 4.0 so that the center channel is automatically redistributed to the other channels, but that isn't a great solution.
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Feb 10, 2010
I'm trying to scan for analogue cable channels. How do I go about this?
I'm using the Hauppage HVR-1950 in Karmic.
After initial setup I'd like to use a program other than MythTV.
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Jul 24, 2011
I am using ubuntu 10.04.I am trying to get 6 channel audio output.When i open alsamixer it does not show controls for multiple channels. I have seen on articles i read that alsamixer shows controls for multiple channels.how to configure 6 channel audio output on ubuntu 10.04.
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Feb 4, 2010
I use Kaffeine Version 1.0-pre2 and xine 0.99.6 on Fedora 12 64-bit. If I try to watch HD-channels (such as Das Erste HD, ZDF HD, arte HD), there is no sound (or just a few seconds). I read some times, that setting the audio buffer to 750 and the video buffer to 1000 should solve the problem
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Nov 9, 2010
I had a look at No TV in Kaffeine, but I'm lost. I have an HDTV wonder card. I have installed dvb, ffmpeg, w32-codecs, etc. I am able to watch video/hear audio.
I have updated the scan data in kaffeine, adjusted device 1 tab to my area, but when I open the channels window and scan, it just goes through the motions and lists nothing. Here i partial output from:
randolph@linux-jooj:~> scan /usr/share/dvb/atsc/us-NTSC-center-frequencies-8VSB
scanning /usr/share/dvb/atsc/us-NTSC-center-frequencies-8VSB
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
>>> tune to: 57000000:8VSB
WARNING: >>> tuning failed!!!
[Code]....
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