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• novice user...firewall

  - by dave

  I've recently ditched windows 7 for Ubuntu 11.10 64bit... I'm a total novice and was wondering do I need to make any changes to the firewall?. I read somewhere that the built in firewall doesn't need touching...but a friend says he uses firestarter,I'd be really grateful if someone could advise me weather to just leave well alone or if I should make certain changes,I'll be doing a lot of web browsing and also proberly a bit of online banking to. Infact this is one of the reasons I've switched to Linux as I was told its much more secure than windows... I just want my comp to be setup in a way that I can access my bank account safely and not knowing what to do about the firewall or how to configure it is off putting... Also do I need an antivirus?..I know bitdefender and eset do a free Linux scanner but again I've heard there not really needed. Thanks in advance to anyone who can answer my questions...much appreciated. Dave...

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• Should I give preferential treatment to proxy users on my ecommerce site?

  - by Question Overflow

  I am setting up an ecommerce site that caters to a worldwide audience. I would imagine that visitors would come from everywhere, and for whatever reasons, some would be connecting through proxy servers. My site uses a server that is configured to rate limit connections from the same ip address to protect itself from a DOS attack. So, if a proxy server is heavily used by my visitors, then it would appear to be a DOS. This is problematic in a sense that it is hard to tell whether the users are genuinely browsing my site or if a DOS is taking place. So my question is, should I give preferential treatment to proxy users on my ecommerce site? If yes, how should this be done. If not, why not?

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• How are typical users expected to read the documentation in /usr/share/doc?

  - by ændrük

  I only recently learned that there is a huge pile of documentation in /usr/share/doc. How on earth is a typical user supposed to find out about that? It seems like much of it is gzipped, and inaccessible with administrative privileges: $ gunzip examples/letter.tex.gz gzip: examples/letter.tex: Permission denied Are users expected to duplicate each item in their home directory just to read it, or is there a less tedious solution? This arrangement hardly seems conducive to regular browsing. How do normal people read this documentation?

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• How to secure Ubuntu for a non-technical user? (your mom)

  - by Gil

  My mother will be traveling for a while and I need to provide her with a secure laptop so she can work. A windows laptop is out of the question because: she'll be logging into dodgy hotel wireless networks and conference networks price of the windows license to install on a netbook I've installed libreoffice, media players and skype on it. Also enabled SSH so I can intervene but I am worried that I might not be in a position to do so. Possible threats: web browsing USB sticks insecure networks prone to intrusions malware SSH/VNC vulnerabilites Skype vulnerabilities All the "securing Ubuntu" guides out there assume the user has a certain level of technical knowledge but this is not the case with moms in general. If a malware can gain even user level access it might compromise her files.

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• Windows VirtualBox can't browse network

  - by Don Kirkby

  I'm running Windows XP as a VirtualBox guest OS under Ubuntu 11.10, and I can't browse the Windows network. It seems like I can connect to some specific network shares, maybe only ones that are already mapped to drives. If I disable ufw, it all works fine, and when I enable it again, the network browsing continues to work. I tried looking at /var/log/ufw.log and saw it blocking port 138. When I allowed that port, then I saw it blocking port 137. I found this answer, and it led me to bug 360975. The bug originally asked for both nf_conntrack_pptp and nf_conntrack_netbios_ns to be added to the defaults, but in comment 11, Jamie decided not to include nf_conntrack_pptp in the fix. I tried adding it in, and it seemed to solve my problem, but then the problem came back. How can I let the Windows guest OS browse the local network?

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• Java is Insecure and Awful, It’s Time to Disable It, and Here’s How

  - by The Geek

  As usual, there’s yet another security hole in the Java Runtime Environment, and if you don’t disable your Java plugin, you’re at risk for being infected with malware. Here’s how to do it. Security holes are nothing new, but in this case, the security hole is really bad, and there’s no telling when Oracle will get around to fixing the problem. Plus, how often do you really need Java while browsing the web? Why keep it around? Java is Insecure and Awful, It’s Time to Disable It, and Here’s How HTG Explains: What is DNS? How To Switch Webmail Providers Without Losing All Your Email

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• Sidestep Automatically Secures Your Mac’s Connection on Unsecure Networks

  - by Jason Fitzpatrick

  If you’re wary of browsing on wide open public Wi-Fi networks (and you should be), Sidestep is a free Mac application that routes your connection on an unsecure network through a secure proxy. Sidestep automatically detects when you are on an unprotected wireless network and forms an encrypted tunnel to the proxy you specified during setup. Anytime you login a wide open Wi-Fi node (such as at a coffee shop, airport, or other public area) you won’t be broadcasting your login credentials and other personal information in what amounts to plain text into the air around you. Anyone snooping on you or the network in general will simply see your stream of encrypted data going to the proxy. Hit up the link below to grab a copy and read additional information about setting up the program and finding/configuring a proxy server. Sidestep is freeware, Mac OS X only. Sidestep [via Gina Trapani] How to Create an Easy Pixel Art Avatar in Photoshop or GIMPInternet Explorer 9 Released: Here’s What You Need To KnowHTG Explains: How Does Email Work?

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• Slow Resume After suspend having chrome running with many tabs

  - by tUrGoNn

  I usually use chrome and Firefox for browsing. I also open many tabs (around 40 in both some times). The problem I have occurs when I resume the PC after having suspended it: It takes from 2 to 5 minutes sometimes to just get back normally. Does this have to do with memory usage not properly resuming? Is it a bug in Chrome/Firefox or Ubuntu itself? Note that I just upgraded from 10.10 to 11.10 and I was having the problem on both releases, which makes me guess that it has to do with Ubuntu not resuming well if some memory-heavy apps were running before the suspend occured.

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• File manager (Nautilus) hangs or is ultra slow when listing contents of ssh/sftp server

  - by NahsiN

  I used to use File -- Connect to server to connect to my remote ssh a lot before 12.04/11.10. But now in a fresh install of 12.04, whenever I try to access the remote files, nautilus either always hangs or is ultra slow (5 mins) in listing the directory contents. Most of the time I have to force quit or xkill. Mounting using SSHFS works fine. The ssh server is fast and it works fine via putty, mc (using fish) and normal terminal. I also installed nautilus in Lubuntu 12.04 (virtualbox) and to my surprise, browsing is fast and smooth. Both versions of nautilus are at 3.4.2 thus I am led to believe the problem might be lying somewhere in Ubuntu 12.04. But I am clueless. All suggestions welcome. I really need to solve this problem.

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• How to configure ubuntu for lightweight low-memory usage?

  - by augustin

  I just upgraded an old, secondary computer to the latest Kubuntu (10.10). It seems the effort was a bit too much for the hardware and one 512MB memory module died. I tried to take it away, clean the connectors, put it back several times, but to no avail. Until such a time I can find a second hand DDR memory module, I am left with a meagre 256MB RAM, which is below the official requirements (384MB) to run Kubuntu/KDE. Indeed: the computer constantly swaps the memory, making everything painfully slow. Since Kubuntu is already installed and I use it on all my computers (and I want to keep KDE for when I really need it), how can I configure ubuntu to squeeze out every bit of unnecessary memory usage? This is a secondary computer but still very useful. We use it mostly for web browsing. A "lightweight" tag is missing.

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• Latest EMEA Partner Success Stories (21st November)

  - by swalker

  Be Recognised Through Partner Success Stories You can showcase your capabilities in Oracle products and industries through partner success stories that are published on Oracle.com, and benefit from the traffic on our portal. To participate, you are required to complete a form and inform us of a successfully implemented project. If your story is selected, we will contact you for an interview. Click here to access the form and submit your success story. The latest customer success snapshots with partners being uploaded on to Oracle.com are: Robur S.p.A. Telenor LinkPlus A.S. Urals Power Engineering Company Bochemie Group Mediaset S.p.A Landbrokes Coeclerici S.p.A. IDS GmbH -Analysis and Reporting Services Teatre Nacional de Catalunya LinkPlus A.S. Scottish Water LH Dienstbekleidungs GmbH Champion Europe SpA  Metropolitan Housing Partnership McKesson Robur Learn more about our partner and customer successes by browsing the many EMEA Success Stories across all industries here.

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• Lexmark X7170 shows documents as printed when they haven't

  - by Mehmet

  I made the move from Windows 7 to Ubuntu not dual booting because I have decided to quit gaming to spare more time for my studies. I just needed an OS for browsing the web and word processing etc. After I installed Ubuntu I installed the AMD GPU drivers, after which I clicked on the little printer icon, selected add printer and it found the drivers for the Lexmark 7000 series and I installed them. Now my problem is when I print something from Writer it processes it thinks its completed it, when in fact it hasn't printed anything. I tried printing a test page but it was stuck on processing for 5 minutes. I have restarted my computer and turned the printer on and off. I'm running 64bit if that changes anything.

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• How important is to avoid name collisions between libraries belonging to different domains?

  - by Sergio

  I have written a small open source Java library for facilitating conversions between different types of objects (in the style of Google's gson, but quite more general). It seems to me that a nice natural name for my library is JConverter, after browsing in the web to see if another library with the same name already exists, I found a library with the same name for Joomla. My concrete question is: How important is to avoid naming collisions when creating an open source library if an existing library with the chosen name already exists in a complete different domain ? (in my concrete case, these are libraries even implemented for different languages).

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• The White Screen of Death

  - by TATWORTH

  A few days ago I was browsing a particular commerical web site, the site crashed and I encountered the "White Screen of Death". The detailed dump showed me what the site was using:zendMySqlPHPMageMagentoBesides all this detailed information of use to a hacker, the copyright on Magento cited a date of 2009.  Does this means that out of date software was in use?There is a more basic point - in your site please ensure that fatal errors are trapped and redirected to a page that gives away no information useful to a hacker. I suggest also that you provide a means for an administrator to simulate an error to check the error handling.

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• Did You Know Facebook Has Built-In Shortcut Keys?

  - by The Geek

  I was spending some time browsing around Facebook today (translation: wasting time), when I noticed that they have some shortcut keys for navigating around the site using the keyboard, so I put together a list for everybody. Note: for each of these shortcut keys, if you’re using Firefox, you’ll need to use Shift+Alt instead of just Alt, and for Internet Explorer you’ll need to hit the Enter key after the shortcut to trigger it. If you’re using a Mac, you’ll need to use Ctrl+Opt instead of Alt Latest Features How-To Geek ETC How To Boot 10 Different Live CDs From 1 USB Flash Drive The 20 Best How-To Geek Linux Articles of 2010 The 50 Best How-To Geek Windows Articles of 2010 The 20 Best How-To Geek Explainer Topics for 2010 How to Disable Caps Lock Key in Windows 7 or Vista How to Use the Avira Rescue CD to Clean Your Infected PC 2011 International Space Station Calendar Available for Download (Free) Ultimate Elimination – Lego Black Ops [Video] BotSync Enables Secure FTP File Synchronization on Android Devices Enjoy Beautiful City Views with the Cityscape Theme for Windows 7 Luigi Installs Any OS on Google’s Cr-48 Notebook DIY iPad Stylus Offers Pen-Based Interaction on the Cheap

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• What are the disadvantages of naming things alphabetically?

  - by JoJo

  Let me give you an example of how I name my classes alphabetically: Car CarHonda (subclass of Car) CarHondaAccord (subclass of CarHonda) There are two reasons why I put the type of the class earlier in its name: When browsing your files alphabetically in a file explorer, related items appear grouped together and parent classes appear above child classes. I can progressively refine auto-complete in my IDE. First I type the major type, then the secondary type, and so on without having to memorize what exactly I named the last part of the thing. My question is why do I hardly see any other programmers do this? They usually name things in reverse or some random order. Take the iOS SDK for example: UIViewController UITableViewController What are the disadvantages of my naming convention and the advantages of their convention?

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• Can we grant sudo to an already opened application?

  - by james

  So, can we grant sudo to an already opened application ? I wish to first open an application as normal user and incase if i need root permissions on it i wish to grant su without restarting the application.. I tried opening an application and then type "sudo appname" in terminal, but that opens a new app window retaining normal user permissions on old app window. Say, i want to check and edit /etc/apt/sources.list . I open a filemanager and go to the path and click on sources.list which opens a text editor with that file in view. If i feel i need to edit that, then i want to grant sudo to that instance of text editor rather than opening a new root text editor and browsing the entire path.

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• What are the benefits of a disk install vs. Wubi? And can I migrate my settings easily?

  - by Alex Bixel

  I chose to do the Wubi install because it was short, simple, and easy to reverse (no messing with partitions required). To be honest, I can handle the lack of a hibernate function. I haven't really heard many other benefits of installing on a separate partition than hibernation and negligibly faster hard disk read/write. Yet almost everyone I encounter seems to have opted for the disk installation. Are there more benefits I should be aware of, especially as a college student who wants a fast, efficient machine for documents, web browsing, etc. (nothing big like gaming, I can run that on Windows)? Also, I have a fair amount of settings and packages installed that I spent a bit of time on and would rather not have to do again. Is there any way I can migrate all of these settings from the virtual disk on my C:/ drive (Wubi installation) to the disc installation in another partition? (I have a 16GB USB drive if that'll do the trick)

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• Do I need any additional Java packages if I'm running the Oracle JRE?

  - by George Gorski

  I am running the Java 7 JRE from Oracle. I installed it through terminal and it works properly with my web browsers, and otherwise, as far as I can tell. However, I was browsing through my installed packages in Software Center, and noticed that both the 'openjdk-7-jre-lib' and 'openjdk-7-jre-headless' packages were still installed from when I had the OpenJKD JRE installed, which I have since uninstalled, but did use for a good period of time before I switched. Should those be there, or might they cause complications if I leave them installed? Or would it be best to leave them installed?

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• How to debug JavaScript in Visual studio 2010

  - by anirudha

  here is a little trick to debug the JavaScript inside Visual studio or express edition of VWD get all included office updates  from Microsoft updates install them. enable the script debugger for IE or others inside internet explorer go to IE > internet options > advance > browsing open a website in Visual studio or express put the breakpoint in JavaScript code and run them after setting as default browser internet explorer. when the breakpoint function called he automatically show you all about the code you breakpoint. you can also change them and find the result in browser. for advance debugging their are many option already known in visual studio work same as C# debugging like Advanced Window, Local  , watch you can use all these 3 window for JavaScript debugging.

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• You Can Deliver an Engaging Online Experience Across All Phases of the Customer Journey

  - by Christie Flanagan

  Engage. Empower. Optimize. Today’s customers have higher expectations and more choices than ever before.  To succeed in this environment, organizations must deliver an engaging online experience that is personalized, interactive and consistent across all phases of the customer journey. This requires a new approach that connects and optimizes all customer touch points as they research, select and transact with your brand.  Oracle WebCenter Sites combines with other customer experience applications such as Oracle ATG Commerce, Oracle Endeca, Oracle Real-Time Decisions and Siebel CRM to deliver a connected customer experience across your websites and campaigns. Attend this Webcast to learn how Oracle WebCenter: Works with Oracle ATG Commerce and Oracle Endeca to deliver consistent and engaging browsing, shopping and search experiences across all of your customer facing websites Enables you to optimize the performance of your online initiatives through integration with Oracle Real-Time Decisions for automated targeting and segmentation Connects with Siebel CRM to maintain a single view of the customer and integrate campaigns across channels Register now for the Webcast.

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• ubuntu 12.10 slow application load upon restart

  - by Adam

  new ubuntu user. after boot (boot is quite fast), opening applications such as firefox, libra, system settings, takes close to 10 seconds to open. after the application is loaded in RAM, the application opens fine. the system feels snappy, quick. when i have two FIREFOX open, unity is snappy in showing me the two windows side by side. but upon bootup, loading the application takes 10 seconds. there is not much hdd activity. fresh install. its the same for system settings and browsing system settings. when system settings is opened for the first time (10 second), and i click for example Color, it will take quite long to open the color settings. hardware: i3 4gb ram radeon 5770 250gb sata gigabyte h55m motherboard i am using ubuntu straight out of the box, no propriety drivers. 64 bit. i have reinstalled OS, and still the same.

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• Backlight turns off when launching Braid

  - by tone0511

  I have Ubuntu 12.10 on Acer Aspire 4736z and I installed Braid. When I have just turned on the computer, login and then launch Braid right away, it works just fine. But when I have already been using the computer for some other tasks like browsing or typing on Open Office after booting up and then decide to play Braid, the backlight turns off and I cannot turn it back on using the screen brightness control buttons. I have uninstalled and reinstalled Braid but it's the same. Please help me. Thanks.

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• App for finding icons easily?

  - by artfulrobot

  Occasionally I need to use a custom icon for something - a launcher created with alacarte, a custom .desktop file, or just a particular folder viewed in Nautilus. I know there are LOADS of cool icons installed on my system at /usr/share/icons but browsing them is really awkward. Everything is scattered around, duplicated in different sizes (or symlinked to .svg) etc. So, say I'm looking for a text file icon, or a purple folder or such, searching is a faff, and then when you do find results you need to work out what the best quality one is. Made me think that someone might have written an app for this?

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• Ubuntu freezes when gdm starts

  - by Enrique

  I have Ubuntu 10.10 (upgraded from 10.04) I was browsing in Firefox yesterday, then the PC suddenly did a reset Once it restarted, everything went normal until gdm begun showing. Then everything froze and locked when userlist showed. I can't move mouse pointer nor do anything with keyboard at this point (just after userlist shows in gdm). PS: Both, mouse and keyboard work fine, because this Ubuntu is dual-booting with a Windows XP install which loads/works fine. Here is my .xsession-errors file, but I don't have a clue what may be wrong. Thanks http://pastebin.com/GVtneEAF

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