Security :: What Is "normal" Output Of Who
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 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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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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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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Feb 16, 2009
I have installed Fedora 10-x86_64. I was happy and content with the distribution. Earlier, I found that there is no sound on my headphone's jack where as the normal sound output from my laptops's speakers is OK. I fiddled with the available mixers but couldnt get anything. There seem to be 5 different mixers (HDA, ALSA, OSS), 3 for the playback and 2 for the capture.
I am using an acer 4530 laptop. It has a nvidia Nforce MCP77 chipset. and the o/p lsmod| grep snd :
Code:
I did a alsa-info and upload the details at:[url]
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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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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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Apr 19, 2011
I've never seen the type of output from netstat and don't have a clue what it means.Quote:
tcp 0 0 :::8009 :::* LISTEN 31673/java
tcp 0 0 :::22 :::* LISTEN
[code]...
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Aug 25, 2010
I put together the following filter set :
Code:
#!/bin/sh
#To understand this script, reference the No Starch Press Linux Firewalls Book.
MODPROBE=/sbin/modprobe
IPT=/sbin/iptables
IPTSV=/sbin/iptables-save
IPT6=/sbin/ip6tables
IPT6SV=/sbin/ip6tables-save
### flush / drop policy sets
echo "[+] Flushing existing rules with DEFAULT of DROP [+]"
echo "[+] IPv4 [+]"
$IPT -F
$IPT -F -t nat
$IPT -X
$IPT -P INPUT DROP
$IPT -P OUTPUT DROP
$IPT -P FORWARD DROP
echo "[+] IPv6 [+]"
$IPT6 -F
$IPT6 -F -t nat
$IPT6 -X
$IPT6 -P INPUT DROP
$IPT6 -P OUTPUT DROP
$IPT6 -P FORWARD DROP .....
###OUTPUT rules: LOG rule
$IPT -A OUTPUT -o ! lo -j LOG --log-prefix "DROPED OUTBOUND" --log-ip-options --log-tcp-options
I wanted to know how to allow certain applications through the outbound tables. For example, I wish to be able to use tools such as nmap,tracepath, and traceroute. However, I am not sure where to look to understand the ports to open. I was starting to think that maybe rather than ports to open it would need to be somehthing like tcp flags that would ned to be allowed. Any way, I have tried google and am still haing problems. I started wanting to use these tools due to getting ready for my network+ and security+ certs.
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Apr 23, 2011
I've done some searching on googlubuntu for and answer to this but haven't found anything.
As a Linux newbie I was wondering if there are certain types of output from the terminal I should beware of posting for everyone to see? Also are there any codes; that, if I were to be asked to run and report the output on, should raise a red flag?
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Feb 16, 2010
This is the difference in the output of a port scan using Zenmap on the same system with UFW turned off and then with it turned on. It is obvious that UFW works.
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Apr 29, 2010
I cant seem to get the sound working and when I click on perference then sounds and go to the output selection it has only dummy output as a option.
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Mar 7, 2010
I installed KMplayer but I cant play video files...No video output but can get only the audio output...So how to make this work for videos?
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Jan 25, 2011
Running 10.10 and win 7 on my HP dv6-2150us laptop and I'm having a few issues.
First how do I get HDMI audio output to my TV? I think I have just a integrated Intel graphics card. It works fine in windows but I can't seem to get it to work in Ubuntu. I tried searching but couldn't find anything pertaining to this issue.
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Jan 6, 2011
I am sure that this is very simple but I have installed sound juicer and the gstreamer plug ins. The problem is i still cannot select MP3 as an output output option
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Jul 19, 2011
I don't know anything about ubuntu. Could you guys help me out. I'm pretty knowledgeable with windows if you guys need a printout of something let me know. My friends getting really frustrated about this. Help!!i
So here's the situation. He plugs his audio jack into his computer and then into the speakers but it still plays from the computer speakers.
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Mar 27, 2010
I finally got audio working on my ubuntu 9.10 desktop... now I am having sound issues watching movies from a network share.The sound device continually randomly changes to "dummy output device" and then there is no sound output. The sound icon dissapears on the toolbar. To get it back and audio to start working I have to $sudo alsa force-reloadIt seems to happen everytime there is a network delay, the movie will stop for a second and then when it plays the sound is gone
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Mar 4, 2011
Is possible to have two identical sound card outputs? For example, is I want to use two headphones at the same time.
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Feb 14, 2010
quite some time back, when I was learning about MySQL injections it has sorta been drilled into me to use mysql_real_escape_string when dealing with input from users.[URL]..I'm running a standard LAMP installation, with no alterations to the defaults.
On the site in question, I do have this all set up, however, as part of a tutorial series on FULLTEXT, I've included the output of both "un-escaped" and "escaped" input, to show the importance.
[Code]...
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Jan 22, 2011
I'm still trying to find out if my coby mp3 player will actually play mtv video files as is advertised.
ffmpeg -formats does list mtv but the only command I really ever used was one to convert a vid to an mp3 so I tried Code: ffmpeg -i test.mp4 -acodec copy output.mtv it returns Code: Unable to find a suitable output format for 'output.mtv' I can't find any mtv files online for purchase or free for that matter, so I know this is all pretty obscure but shouldn't there be a way to convert them since ffmpeg lists mtv format?
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Mar 7, 2010
After installing some updates to ubuntu 9.10 my laptop will no longer let me boot into the normal OS environment. It takes me to the GNU GRUB version 1.97~beta4 command prompt. I think I am supposed to execute the following commands in order to get it to boot normally:
set root=(hdX,Y)
linux /boot/vmlinuz-2.6.31-14-generic root=/dev/sdXY ro
intrid /boot/intrid.img-2.6.31-14generic
boot
To find the correct partition I entered 'ls' and it gave me back:
(loop0) (hd0) (hd0,4) (hd0,3) (hd0,2) (hd0,1)
if I can only find the boot files in the (loop0) how do I go about setting this up so I can boot into my OS as it normally should?
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Nov 28, 2010
I want to install Linux red hat 5 (x86_64) on HP ProLiant DL320 G3 server, to make it a logs server. Note: I know how to install the red hat on a normal PC but I am not trying on proliant server. I don't know if I need to use smart start CD before starting the installation or I need to UPGRADE BIOS/FIRMWARE COMPONENTS of server. this is my questions only.How I can starting to installing Linux on HP proliant server?
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Oct 15, 2009
Quote:
Originally Posted by diamond_ramsey
I was able to download the Fedora 12 Beta on a i386(32-bit) DVD iso and the install went well and clean.
I`m new to Fedora (but not to Linux generally) and maybe I made some kind of mistake. I`m not quite sure what logical volumes are and I was a little bit scared to use them. I tried to disable logical volumes and put Fedora on my "classical" volumes (partitions) but they looked quite different from what I expected.
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Apr 15, 2010
Is there any way to use 'fdisk -l' as a normal user? I see in F12, /sbin has been added to PATH by default for a normal user, but when trying to use it, nothing shows up.
See below for demonstration purposes:
Code:
Password:
I don't want to use 'su -' or 'su -c' and login every time.
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