Ubuntu Security :: How To Avoid The Phishing

Feb 12, 2010

i have just installed Ubuntu,i'am really concerned about security,i have no idea about linux.In windows, i use kaspersky internet security to protect the computer, so any time i want to log on my bank web, i use virtual mode or secure mode,and also virtual keyboard offered by kaspersky,i ve never had a problem,this way i think i protect myself against fishing.
Is there anyway to protect myself from the fishing attack in Ubuntu?

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Security :: Devious New Phishing Tactic Targets Tabs

May 25, 2010

Most Internet users know to watch for the telltale signs of a traditional phishing attack: An e-mail that asks you to click on a link and enter your e-mail or banking credentials at the resulting Web site. But a new phishing concept that exploits user inattention and trust in browser tabs is likely to fool even the most security-conscious Web surfers.As Mozilla Firefox creative lead Aza Raskin describes it, the attack is as elegant as it is simple: A user has multiple tabs open, and surfs to a site that uses special javacript code to silently alter the contents of a tabbed page along with the information displayed on the tab itself, so that when the user switches back to that tab it appears to be the login page for a site the user normally visits.

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Ubuntu Security :: How To Avoid Govt. Sniffing And I-net Censorship

Dec 15, 2010

I have recently started using Ubuntu, so far I am quite satisfied with the switch in OS. This time my question has more to do with privacy, govt. sniffing of private/personal communications, Internet censorship and what to do about these issues. I live in a South American country where the govt. wants to impose Internet censorship such as the one currently in place in Iran, Cuba or China. They plan to set up a single node for all Internet communications out-going and in-coming. I would not be surprised if they are already monitoring people`s communications illegally.

1. what can be done to avoid being censored? they will be able to monitor my email accounts, facebook, twitter and so on. They want to force the Internet Service Providers and telecom companies to censor their users, since those companies will be responsible for the content of the emails, sms, tweeter messages, etc.

2. What can I do to avoid their censorship of certain contents which are critical of the govt. or contrary to the regime`s views? I need to be able to read what other people are saying beyond the borders of this country. We can`t tolerate living with this ban. Certain contents coming from abroad will be blocked.

3. How can I protect my email and bank operations? Is a proxy server an option? I really don`t know what a proxy server is, how much it would help us avoid govt. sniffing in private matters for political reasons.

4. what additional measures can be taken? is using encrypted messages an option to communicate with my relatives in order to prevent the govt. from reading my emails?

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Security :: How To Avoid Similar Vulnerabilities In Their Own Code

May 5, 2010

Google just announced the release of Jarlsberg, a microblogging app specifically designed to be full of bugs and security flaws.The app is being released through Google Labs and Google Code University as a security tutorial for coders. Google is encouraging programmers to try their hands at exploiting weaknesses in Jarlsberg as a way of teaching them how to avoid similar vulnerabilities in their own code.

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Ubuntu Security :: Avoid To Rewrite The Password Again And Again - Start With Superuser Permissions

Oct 16, 2010

Having to write my user password every time I want to do anything. I DO know I'm doing something risky for the system, that's why I have Linux. Is there a way to avoid to rewrite the password again and again, like start with superuser permissions?

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Security :: Avoid Www-data User Intrusion On Debian Server?

Dec 13, 2010

I'M A NOVICE and some days ago my web server was down (apache issue) and I found the following file called .bash_history in the folder /var/www/ :

cd /tmp
ls
wget [MODERATED]

[code]...

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Security :: Folder Permissions To Avoid File Upload By Http User?

Feb 24, 2011

However, configured a website on a dedicated server using WHM/cPanel. The site was uploaded using the master account for the website.

The security issue is public users are able to upload files on to my server via the website. They could even access the root and execute whatever they want on the server.

I have consulted with 2-3 Linux experts. According to them, the PHP user has rights to execute anything on the server or upload & store files in whichever folder they want.

Can I protect my folders to avoid file uploads via the website. The application has security vulnerabilites. However, I want to prevent hackers to enter my site until the vulnerabilities are fixed.

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Fedora Servers :: Disable Samba Security To Avoid "Access Denied" Errors When Shares It Via Windows XP?

Aug 25, 2009

Does anybody know if there is a quick and easy way to simply disable samba security to avoid "Access Denied" errors when trying to access shares via Windows XP?

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Ubuntu :: "alien" Tabs In Firefox Browser / Block To Phishing?

Jun 11, 2010

This is happening me for more than a year and despite I talk Google but they never do anything.

Okay, I have saved 3 tabs in the browser always.But from time to time the following sites shows up in my browser without my authorization:
1- http://www.en.com/
2- http://www..%0a/
3- etc

Why this is still happening?How can I block them to phishing (yes?) me?

Why those people FORCE me to visit (or buy their products) without my permission?

That is INVASION of PRIVACITY!

If I Go to my "Firefox Preferences" and I set my preferences HOW is possible that they can re-set them?

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Ubuntu :: How To Avoid Flood When Using Gparted

May 15, 2010

specs: toshiba lappy
110gb hdd, 1gb ram, core 2 duo 1.6ghz, nvidia 7600
windows xp pro service pack 3
jaunty jackalope

my problem is: i wanted to repartition (shrink xp and create partition for data storage) my hdd using gparted live cd 0.5.2-9. everything went fine until i clicked exit and reboot. after the cd tray automatically ejected i got a flood of "VFS: busy inodes on changed media or resized disk srO". this doesnt stop until i press enter. after that it reboots normally and there is no problem with the os.

my questions: 1) is that flood anything bad, is there a way to avoid this. i read somewhere that the problem is solved when using the terminal sudo eject - then push back the cd tray - then sudo eject -t. i tried that but it said failed because gparted cd is in use.

2) the first time that happened i didnt know what to do, so it flooded like for 15min or more until i pressed enter. my question is if the flood is being saved anywhere on the pc so that i have to delete it?

and a question regarding extended partition: 3) i have 50gb left that i want to use for data storage. i read that you can only have one extended partition. so since there is already one extended partition from ubuntu, i cant have another one for windows? so i can only make the data partition as primary or is there another reason why the "create extended partition" is greyed out?

last question: 4) when i set up the partition for swap i made it 1032gb big but in gparted it shows 980.53mb. is that still enough or why is it like that because somehow the sizes of the partitions seem a bit different than how they originally should be. im actually used in seeing the size shrinking a bit but i found it weird that the ubuntu partition shows 4.76 when it should be 4.5gb. i know its not much different but im just curious to know why..

partitions order: windows - unallocated (-->data partition) - ubuntu (primary) - home folder (extended) - swap

in windows the partitions are shown as: windows xp (31,74gb) - unallocated (50,05gb) - 4,76gb unkown - 24,27gb unkown - 981mb uknown

in gparted: its almost the same, only difference: there is unallocated space (7 or 8mb) between home folder and swap

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Ubuntu :: How To Avoid A Hard Reboot

May 17, 2011

on a Vimeo video in Firefox, and my computer became "partially frozen". The video stopped, but the audio continued to play to the end, but I couldn't clear the video. I pressed ctrl-f2 to switch to my other desktop, but it just brought up a blank screen, and switching back makes no difference.As it stands I have a black screen with my mouse cursor on it (I can move the cursor, yes). I'm new to linux, and I want to know if there are any keyboard shortcuts I could try to fix this. I'd rather not hard reboot whenever I run into a problem, I just don't know the terms to google for

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Ubuntu :: Any Way To Avoid Running Thunar?

Jul 13, 2011

I had a problem with Thunar in Xubuntu. As I often work with huge images, memory is consumed generating Previews. Disabling Previews seems to be very difficult in Thunar, as it makes use of external Thumbnailers. Another problem is making a file executable. I couldn't find out how to do that in Thunar. So I decided to change back to Nautilus, which solves the problems. In preferences it is easy to disable generating previews. But I was not able to get completely rid of Thunar. The folders on my desktop still would open in Thunar, although I set Nautilus as default browser. So the problem sometimes is still there. Uninstall is not possible, as it completely uninstalls xfce-desktop. Is there a way to avoid running both browsers at the same time?

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Ubuntu :: How To Avoid Grub Rescue

Feb 15, 2011

I'm working on a managed desktop at work with Scientific Linux so I decided to install latest Ubuntu 10.10 on my laptop, an Aspire 6930, and set it up so it dual boots with Windows Vista.

It boots for the first time,everything looks great and it asks me to update some programs.After it does that,I restart and I get a grub rescue message while there was a strange clicking sound coming from the hard disk. I reinstall Ubuntu through BIOS with a CD and I bring the system to the original state.

I can now boot either with Ubuntu or Vista but I don't dare update the programs it prompts me to as I fear it will lead to the same result. It's been like this for the past month and I was wondering if there is a way to know what actually caused the problem in the first place assuming that is has to do with a program that was updated.

Truth is that the specific model has this problem with the hard disk that makes that constant clicking. When running Vista I have a program called Notebook Hardware Control which lowers some settings and stops the clicking.When running Ubuntu, there isn't any. So is there a way to know which program can cause such an error and refrain from updating it?

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Ubuntu :: Avoid Users Writing On The Same File?

Feb 27, 2011

Is it possible to forbid that more then one user open the same file in rw mode? In windows when you open a file that another user is using, there's ad advise and you have to open it in read only mode

I installed ubuntu 10.04 desktop edition on 3 pc (there is not a server-client architecture). I installed samba.(and smbfs)

put the strings:
[name]
comment = ...
path = /...
guest ok = yes
read only = no
create mask = 0777
directory mask =0777

Computers that access to that directory do (on boot, with root privileges)
mount -t smbfs -o username="user",password="pass" //192.168.0.12/name /mnt/cartelladimontaggio

But if two users access to the same file, both are authorized writing on it! So changes made by one are lost when the other save.

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Ubuntu :: Avoid Having To Enter Password For Ssh Every Time?

Apr 7, 2011

I use rsyc for synching files that I type with a server and every time I have to enter the server's password. Right now in my .bashrc file there is an alias like this code...

but can't find such a thing in rsync or ssh man pages. Does anybody know what I should do?

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Ubuntu :: Avoid Password To Be Asked At Startup?

Jun 24, 2011

I hav disabled the password on startup but the default still pops up and asks the password. How can I stop that. I use UBUNTU 11.04

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Ubuntu :: Cannot Hear Any Sound / Which Setting Avoid Beep

Jan 4, 2010

I wrote a c console-programme with should output a system beep.But I cannot hear any sound.Which setting of Ubuntu avoid the beep.

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Ubuntu Installation :: Avoid Windows 7 Overwritting GRUB?

Jan 16, 2010

Why does Windows (7) [over-]write the MBR [pseudo-randomly]? And what settings can I change to prevent that?

Background : I used to dual-boot Ubuntu and Windows-7 on my gaming-laptop, but periodically I run into GRUB-got-messed-up-please-fix-me-again welcome screens. how-to guides on restoring GRUB, but no obvious ones on how to avoid messing up GRUB in the first place. Whats interesting to note; I have another work-laptop that dual-boots Windows XP and Ubuntu just fine (for the past year) and have never run into any GRUB-got-messed-up-please-fix-me-again situations.

My Hypothesis : I have a hunch that Windows 7 writes to the MBR for enabling Restore-Points.

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Ubuntu Installation :: What Pitfalls Are There To Avoid When Dual Booting?

Jan 27, 2010

What pitfalls are there to avoid when dual booting? What can go wrong?

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Ubuntu Installation :: Avoid Ext4 By Default When Installing?

Jan 29, 2010

This is the related question in Launchpad:and it may affect to debian-installer configuration (?)How can I do to avoid that in the alternate installation partitioner doesn't appear "ext4" filesystem as the default selection in any step?This could make able to install to an encrypted independent volume, for example, without crashing partman-ext3:

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Ubuntu :: Thick Black Lines Sometimes Appear On Printing / Avoid Them?

Feb 22, 2010

Operating System: Ubuntu 9.04
Printer: LaserJet CM1312 MFP

I have an intermittent printing issue that results in part of a printed page containing a horizontal line that spans over two lines. The line is mostly black, with the occasional small break where there seem to be printed multiple characters printed over each other.

Sometimes I print and I do not get this issue. Other times I can print 60+ pages and it happens, while sometimes I get it on a single page being printed.

I'm not sure if this is a driver, printer or cable issue. We've used it through CUPS and we've used a print hub to convert the USB to a network accessible printer to see if that made any difference but it did not.

I have a feeling this has something to do with the print job data corruption.

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Ubuntu :: Avoid Typing Password On Every Admin Action?

Jul 15, 2010

How can I avoid typing a password on every admin action? example when i install a program.

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Ubuntu :: Firewall Of Destination Avoid Answering To Pings / Get Name's IP Without Using It?

Feb 15, 2011

I need to check the output of a name resolution, but I configured the firewall of the destination to avoid answering to pings.
Is there any other way to get a name's IP without using ping? (I mean something like $resolv name.com)

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Ubuntu Networking :: Want To Avoid Disaster That Happened To Kostolnik

Jul 19, 2011

According to this scary wi-fie hacking article:
- http://www.cnn.com/2011/TECH/web/07/...ntenced.wired/

A neighbor was sent to jail for 18 years for seriously hacking his neighbor:
- http://www.wired.com/images_blogs/th...encingmemo.pdf

What can we install on Ubuntu to forestall such an occurrence at home (given a WRT54G router & 1 Ubuntu computer)?

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Ubuntu :: How To Avoid Power Saving Mode Running 9.04

Feb 19, 2010

I work on Ubuntu 9.04 and our application requirement is not to go to power saving mode when application is running. I added ServerFlags section to /etc/X11/xorg.conf
Section "ServerFlags"
Option "blank time" "0"
Option "standby time" "0"
Option "suspend time" "0"
Option "off time" "0"
EndSection

This didn't help. Then I tried following commands
gconftool-2 -s /apps/gnome-power-manager/ac_sleep_display --type=int 0
gconftool-2 -s /apps/gnome-screensaver/idle_activation_enabled --type=bool false
I see that it works fine only if I change settings via Settings>ScreenSaver>Power Management in gnome. I wan to do this via script. Can I do this? Which file gets updated when I change display settings via Settings>ScreenSaver>Power Management.

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Ubuntu Servers :: Avoid Starting Sendmail As Daemon Process

May 1, 2010

I currently have sendmail installed. It starts as a daemon but I want to avoid doing that. I want to start it manually.Also am a dynamic host.so every time i start my computer my ip changes. I use ddclient to update my records at dyndns.com.but how to configure sendmail in the case of dynamic hosts since it looks at the file /etc/hosts which contains information about the static hosts.

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Ubuntu :: How To Avoid Password After Coming Back From Suspended State

Aug 7, 2010

Everytime I leave the computer for a few minutes the screen goes black (I think in suspended state) and when I move the mouse it asks me for the administrator password. How do I make it so it doesnt ask me for it after coming back from suspended state?

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Ubuntu :: How To Avoid Opening A Volume When Clicking On It Under Places Menu

Jan 11, 2011

when I click on a volume under places menu I would like only to mount it without opening it on a new nautilus window. I searched on gconf-editor app > nautilus > preferences but I haven't found any option which seems to prevent this behavior.

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Ubuntu :: Move Logs From Multiple Directories Into One And Avoid Name Collisions?

Jan 25, 2011

What I need to do is gather a bunch of log files from various directories and move them into one spot. Below shows the directory structure.Quote:

dir1
-a.log
-b.log

[code]....

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Fedora :: Is There Any Way To Avoid This While Installing Software Via Yum?

May 28, 2011

I wasn't sure how to describe this in the topic title, but every time I install software with yum (su -c 'yum install package'), I have to download repository information (I think? I'm not really sure what it is, tbh). I checked to see if I had unrar installed or not (obviously I didn't), so I decided to install it. The download is 106k, yet I had to sit there for a while downloading whatever it was that yum was downloading. Is there any way I can skip this? Typically it's not a big deal to wait a minute until it's done, but sometimes I just want to get my program installed and get back to business. Most of my Linux career has been spent with apt-get instead of yum, so I don't fully understand why the process takes longer with yum than it does with apt-get.

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