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• What is wrong with Unix/linux

  - by John Smith

  This is a genuine question motivated by Ideal Operating System When I moved from DOS to Linux in the late 90s it was an eye opener for me. Long file names, arbitrarily many extensions etc... Now I look at Linux and Unix and see all sorts of issues. Here are things I see which could be fixed. Too much depends on root, and rootly powers cannot be voluntarily delegated over several users. (I would love to give up my power to manager printers and delegate the job to another account) File permissions are very limited, and there is not much metadata to go with files. The "everything is a file" metaphor is not true, Plan 9 gets it right(er).

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• Ping and crawling not working, site still resolving

  - by Andrew Alexander

  Ok, so we're trying to figure out why the site of one of our clients isn't being crawled by Google (we've ruled out robots.txt or meta tags) When we go to the site, either IP address or domain name, the site resolves, everything works. However, Google is getting a 302 redirect (which it apparently isn't following for crawling), and when we ping the address, it times out (note, the site is still resolving in the browser throughout all of this). The site is built in ASP.Net (I assume C#) and so my thoughts were that it was an errant redirect rule, or some other sort of server side issue. We also thought that it might be due to incorrect domain pointing (but if we try to ping the IP, it doesn't work, so that sorta rules that out). We're really not sure what is causing all of these errors, or even if they have one single source. Anyone have any ideas what could be going on? Do you need any more information? To boil it down in a TL; dr: * Site resolving in browser, both IP and domain name. No problems here. * Site not being crawled by Google (gets a 302 it doesn't seem to follow) - it is not due to robots.txt or meta tags * Ping is not working for the IP address. This is very odd, because again, the IP address seems to work fine in the browser. * Our thoughts are either redirect rule issue, domain pointing issue, or possibly some errant code - or some combination of the three

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• what are some good interview questions for a position that consists of reviewing code for security vulnerabilities?

  - by John Smith

  The position is an entry-level position that consists of reading C++ code and identifying lines of code that are vulnerable to buffer overflows, out-of-bounds reads, uncontrolled format strings, and a bunch of other CWE's. We don't expect the average candidate to be knowledgeable in the area of software security nor do we expect him or her to be an expert computer programmer; we just expect them to be able to read the code and correctly identify vulnerabilities. I guess I could ask them the typical interview questions: reverse a string, print a list of prime numbers, etc, but I'm not sure that their ability to write code under pressure (or lack thereof) tells me anything about their ability to read code. Should I instead focus on testing their knowledge of C++? Ask them if they understand what a pointer is and how bitwise operators work? My only concern about asking that kind of question is that I might unfairly weed out people who don't happen to have the knowledge but have the ability to acquire it. After all, it's not like they will be writing a single line of code, and it's not like we are looking only for people who already know C++, since we are willing to train the right candidate. (It is true that I could ask those questions only to those candidates who claim to know C++, but I'd like to give the same "test" to everyone.) Should I just focus on trying to get an idea of their level of intelligence? In other words, should I get them to talk and pay attention to the way they articulate their thoughts, and so on?

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• Script to create or drop all primary keys now on TechNet Wiki.

  - by John Paul Cook

  I posted my script to create or drop all primary keys on the TechNet Wiki. You can find it at http://social.technet.microsoft.com/wiki/contents/articles/script-to-create-or-drop-all-primary-keys.aspx . I first published the script here in 2009 and I've always wanted a way for the community to enhance it or correct it. The TechNet Wiki makes that possible. Visit the Wiki and see if you like this approach to publishing scripts....(read more)

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• ConsumeStructuredBuffer, what am I doing wrong?

  - by John

  I'm trying to implement the 3rd exercise in chapter 12 of Introduction to 3D Game Programming with DirectX 11, that is: Implement a Compute Shader to calculate the length of 64 vectors. Previous exercises ask you to do the same with typed buffers and regular structured buffers and I had no problems with them. For what I've read, [Consume|Append]StructuredBuffers are bound to the pipeline using UnorderedAccessViews (as long as they use the D3D11_BUFFER_UAV_FLAG_APPEND, and the buffers have both D3D11_BIND_SHADER_RESOURCE and D3D11_BIND_UNORDERED_ACCESS bind flags). Problem is: my AppendStructuredBuffer works, since I can append data to it and retrieve it from the application to write to a results file, but the ConsumeStructuredBuffer always returns zeroed data. Data is in the buffer, since if I change the UAV to a ShaderResourceView and to a StructuredBuffer in the HLSL side it works. I don't know what I am missing: Should I initialize the ConsumeStructuredBuffer on the GPU, or can I do it when I create the buffer (as I amb currently doing). Is it OK to bind the buffer with a UAV as described above? Do I need to bind it as a ShaderResourceView somehow? Maybe I am missing some step? This is the declaration of buffers in the Compute Shader: struct Data { float3 v; }; struct Result { float l; }; ConsumeStructuredBuffer<Data> gInput; AppendStructuredBuffer<Result> gOutput; And here the creation of the buffer and UAV for input data: D3D11_BUFFER_DESC inputDesc; inputDesc.Usage = D3D11_USAGE_DEFAULT; inputDesc.ByteWidth = sizeof(Data) * mNumElements; inputDesc.BindFlags = D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_UNORDERED_ACCESS; inputDesc.CPUAccessFlags = 0; inputDesc.StructureByteStride = sizeof(Data); inputDesc.MiscFlags = D3D11_RESOURCE_MISC_BUFFER_STRUCTURED; D3D11_SUBRESOURCE_DATA vinitData; vinitData.pSysMem = &data[0]; HR(md3dDevice->CreateBuffer(&inputDesc, &vinitData, &mInputBuffer)); D3D11_UNORDERED_ACCESS_VIEW_DESC uavDesc; uavDesc.Format = DXGI_FORMAT_UNKNOWN; uavDesc.ViewDimension = D3D11_UAV_DIMENSION_BUFFER; uavDesc.Buffer.FirstElement = 0; uavDesc.Buffer.Flags = D3D11_BUFFER_UAV_FLAG_APPEND; uavDesc.Buffer.NumElements = mNumElements; md3dDevice->CreateUnorderedAccessView(mInputBuffer, &uavDesc, &mInputUAV); Initial data is an array of Data structs, which contain a XMFLOAT3 with random data. I bind the UAV to the shader using the Effects framework: ID3DX11EffectUnorderedAccessViewVariable* Input = mFX->GetVariableByName("gInput")->AsUnorderedAccessView(); Input->SetUnorderedAccessView(uav); // uav is mInputUAV Any ideas? Thank you.

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• How to configure Google Analytics experiments manually

  - by John

  I wish to run multivariate tests on an e-commerce site that run across all product pages. I will be setting and deciding the variations myself all I need to do is track the results in GA. I think may be possible (although only A/B testing is available via the GA UI): https://developers.google.com/analytics/devguides/platform/features/experiments#serving-framework EXTERNAL – You will choose variations, handle experiment optimization, and only report the chosen variation to Google Analytics. For example, this should be used by 3rd-party optimization platforms that want to integrate with Google Analytics for reporting purposes. In this case, the Google Analytics statistical engine will not run. However how do I configure this and push the data to GA in my page?

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• Intranet Ip - Access from Custom Domain

  - by Alexander Wigmore

  I have setup a local intranet in my office using IIS7 (Windows 7 Machine), currently it can be accessed through the PC's static IP, however I would like it so that internally it can just be accessed through an easier method, e.g typing in http://intranet (or something similar). There are over 60 PC's int he office, so individually updating Host files on the PC's is not really ideal. We don't need it to be accessible from the outside world (I.e, we don't care/want it to be an Extranet). Any tips?

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• How to install hardware drivers for my laptop

  - by John Flisk

  Everytime I change the OS I usually format my laptop. It is an HP tx-2 Touchsmart. It has a touchscreen and additional hardware that isn't working (i.e. volume control buttons and the network discovery) If I was on windows I would just download the hardware drivers from the HP website. How do I go about installing the software for the built-in hardware of my laptop? I am new to the community and I really want to get this computer working like it used to, to get the full Ubuntu experience. Please direct me, thank you.

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• Will the Mac app store accept an app that reads and parses iPhone backups?

  - by John Wright

  I wanted to submit an app to the Mac app store that reads the iPhone backup dir and provides some useful functionality on user's voicemails and sms messages. The app parses and reads the backup mbdb files, and extracts the voicemail and sms sqlite db files as well as the voicemails to a temp directory. Is this kind of app likely to be rejected since it reads an unpublished format? It's not using any private APIs. I realize none of you are reviewers but wondering if I should even try to submit it to the store.

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• WUXGA revisited

  - by John Paul Cook

  I previously blogged about my search for a 17” 1920x1200 laptop. The only one I could find was a 17” MacBook Pro, which has been an excellent machine for running Windows and SQL Server. It is no longer made. Apple has a few refurbished ones available. Just be sure to get a matte display if you buy one. If you want WUXGA resolution or better in a laptop, your only off the shelf option is now the 15” MacBook Pro with the Retina display, which is 2880x1800. This exceeds the resolution of my 30” 2560x1600...(read more)

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• Who Are the BI Users in Your Neighborhood?

  - by [email protected]

  By Brian Dayton on March 19, 2010 10:52 PM Forrester's Boris Evelson recently wrote a blog titled "Who are the BI Personas?" that I enjoyed for a number of reasons. It's a quick read, easy to grasp and (refreshingly) focuses on the users of technology VS the technology. As Evelson admits, he meant to keep the reference chart at a high-level because there are too many different permutations and additional sub-categories to make such a chart useful. For me, I wouldn't head into the technical permutations but more the contextual use of BI and the issues that users experience. My thoughts brought up more questions than answers such as: Context: - HOW: With the exception of the "Power User" persona--likely some sort of business or operations analyst? - WHEN: Are they using the information to make real-time decisions on the front lines (a customer service manager or shipping/logistics VP) or are they using this information for cumulative analysis and business planning? Or both? - WHERE: What areas of the business are more or less likely to rely on BI across an organization? Human Resources, Operations, Facilities, Finance--- and why are some more prone to use data-driven analysis than others? Issues: - DELAYS & DRAG ON IT?: One of the persona characteristics Evelson calls out is a reliance on IT. Every persona except for the "Power User" has a heavy reliance on IT for support. What business issues or delays does that cause to users? What is the drag on IT resources who could potentially be creating instead of reporting? - HOW MANY CLICKS: If BI is being used within the context of a transaction (sales manager looking for upsell opportunities as an example) is that person getting the information within the context of that action or transaction? Or are they minimizing screens, logging into another application or reporting tool, running queries, etc.? Who are the BI Users in your neighborhood or line of business? Do Evelson's personas resonate--and do the tools that he calls out (he refers to it as "BI Style") resonate with what your personas have or need? Finally, I'm very interested if BI use is viewed as a bolt-on...or an integrated part of your daily enterprise processes?

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• Serious Forum Design Issue

  - by John

  I want to launch a school forum for a country. I'm in dilemma as to how to design this forum. Country will have many states, each state will have cities, each city will have many schools. Each school will have many classes( 1st - 12th). It looks like this: States - Cities - Schools - Classes I want to make each class as forum. Now the biggest problems are two fold: If I were to list even 1000 schools it will create huge number of forums and I don't think forum softwares(PHPBB, MyBB) are designed to support these many Secondly creating and maintaining huge forums is also very difficult. Ideally I'd like to duplicate existing forum hierarchy to new one. I've done lot of search and I've found that such type of forums are infeasible and such designs don't work. Leave alone the fact the nobody uses such a forum. Keeping in mind this, how should I go about designing this forum?

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• Possible problems in a team of programmers [on hold]

  - by John

  I am a "one man team" ASP.NET C#, SQL, HTML, JQuery programmer that wants to split workload with two other guys. Since I never actually thought of possible issue in a team of programmer, there are actually quite a few that came to my mind. delegating tasks (who works on what which is also very much related to security). I found Team Foundation Service could be helpful with this problem and started reading about it. Are there any alternatives? security (do now want for original code to be reused outside the project) How to prevent programmers from having access to all parts of code, and how to prevent them from using that code outside of project? Is trust or contract the only way?

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• Blogger Template: How is inline style tag getting attached to img? [migrated]

  - by john Smith

  Examining a blogger template's img tag (data:post.thumbnailUrl) i've approached a mystery. An inline style tag controlling the width, margin and heigh perimeters are getting added to my img element. They are auto adjusting the images ratio to fit a smaller size. But I can't figure-out where this style tag script lives and how it's happening in my template. My template has no special javascript or jquery scripts. The full size images in the single posts page don't have this style tag. Is this a css or xml feature? element.style { margin-top: 0px; width: 301.0033444816054px; height: 200px; margin-left: -0.5016722408026908px; }

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• Do you know your DNS server?

  - by John Paul Cook

  If you don’t know your DNS server is valid, you need to find out before July 9. The FBI found rogue DNS servers and replaced them with clean, safe DNS servers to protect the public. These safe, clean servers will be turned off on July 9, 2012. If your computer was compromised to use the rogue servers, it will stop resolving DNS queries on July 9 when the clean servers are turned off. The FBI has provided full technical details at http://www.fbi.gov/news/stories/2011/november/malware_110911/DNS-changer-malware.pdf...(read more)

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• How can I show a texture in a separate window in an XNA game?

  - by John

  I'm playing around with random map generation and what I want to do is: Input a command to generate a random map. A texture will be created resembling the generation, each pixel resembling each tile. A new window will pop-up, without removing the original one, that will contain the texture. I know how to do this except for the last part. Would someone please tell me how to create a new window and draw a texture to this window?

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• nginx: dump HTTP requests for debugging

  - by Alexander Gladysh

  Ubuntu 10.04.2 nginx 0.7.65 I see some weird HTTP requests coming to my nginx server. To better understand what is going on, I want to dump whole HTTP request data for such queries. (I.e. dump all request headers and body somewhere I can read them.) Can I do this with nginx? Alternatively, is there some HTTP server that allows me to do this out of the box, to which I can proxy these requests by the means of nginx? Update: Note that this box has a bunch of normal traffic, and I would like to avoid capturing all of it on low level (say, with tcpdump) and filtering it out later. I think it would be much easier to filter good traffic first in a rewrite rule (fortunately I can write one quite easily in this case), and then deal with bogus traffic only. And I do not want to channel bogus traffic to another box just to be able to capture it there with tcpdump. Update 2: To give a bit more details, bogus request have parameter named (say) foo in their GET query (the value of the parameter can differ). Good requests are guaranteed not to have this parameter ever. If I can filter by this in tcpdump or ngrep somehow — no problem, I'll use these.

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• Using AdSense to show ads to logged-in users

  - by John

  I know that you can grant authorization permissions to Google AdSense so that it can 'log in' and see what other logged in users can see (e.g. in a private forum), so that the ads it displays are better targetted. Extending this principle further: I am making a site which will show completely different content for each individual user (i.e. not 'common' content like a forum in which everybody sees essentially the same thing). You could think of this content as similar to the way each Facebook user has a different news feed, but it is the 'same' page. Complicating things further, the URLs for this site will be simple, e.g. '/home' and '/somepage', and will not usually include unique identifiers to differentiate between users (e.g. '/home?user=32i42'). My questions are: Is creating an account purely for AdSense to log in to the site with worth it in this case, seeing as it will be seeing it's own 'personalized' version and not any other user's? More importantly: is that against the Google AdSense Terms of Service? (I can't seem to figure that one out) How would you go about this problem?

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• E-Business Suite at OpenWorld

  - by [email protected]

  Did you know...Oracle E-Business Suite Release 12.1 offers nine new solutions and more than 400 enhancements across human resources, supply chain management, procurement, projects, master data management, customer relationship management, and financials? With over 150 session dedicated to E-Business Suite, at OpenWorld, you can learn all about Release 12.1. Follow this link to the OpenWorld content catalog to get a list of session for E-Business Suite. Or this one to get more information on Oracle E-Business Suite Release 12.1

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• Shutdown issue on persistent LiveUSB

  - by John K

  A) Downloaded Ubuntu to a Windows 7 temp directory from: http://www.ubuntu.com/download/ubuntu/download (Ubuntu 11.10 - Latest version / 32-bit). The output was a .iso file. B) Created a bootable USB stick using Universal USB Installer: http://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/. Did not select "Persistent file". Result: Tried it in a Dell Latitude D630 Dell laptop: works every time, many startups and shutdowns. C) Repeated B) but with "Persistent file" set. Works once or twice, but then, just locks on the Ubuntu splash screen. E) Downloaded LiveUSB Install from http://live.learnfree.eu/download, which created a file on Windows 7 called live-usb-install-2.3.2.exe. F) Ran the above installer with "Persistent file" to a 4GB ScanDisk (formatted) thumb drive. Result: Worked pretty good for a while. Shutdown and rebooted several times. Changed items like creating a new directories - all worked. Then: Setup an Admin account with a password and no auto login. On next reboot, it required the password and logged in correctly. Tried to shutdown via the top left icon - Shutdown menu option. Key issue: Would not shutdown, but would always go back to the login prompt. Could successfully login. Finally, shutdown (which just put me back to the login window), and hard shutdown with the power switch. Result: On reboot, just locks on the Ubuntu splash screen. Questions (note, very new to Linux): Did I shutdown wrong (I mean prior to the hard power off)? Is the persistence option very unstable, or am I doing something else completely wrong?

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• What are some good game development programs for kids?

  - by John Giotta

  I know a very bright little boy who excels in math, but at home he's glued to his Nintendo DS. When I asked him what he wanted to do when he grew up he said "Make video games!" I remember a few years there was mention of a MIT software called Scratch and thought maybe this kid can do want he wants to do. Has anyone used any of the "game development" for kids softwares out there? Can you recommend any?

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• Product Support Webcast for Existing Customers: Security Scenarios with Oracle WebCenter Content

  - by John Klinke

  Learn how user authentication and authorization is now implemented in Oracle WebCenter Content by attending this 1-hour Advisor Webcast "Security Scenarios with WebCenter Content" on September 27, 2012 at 11:00am Eastern (16:00 UK / 17:00 CET / 8:00am Pacific / 9:00am Mountain) This 1-hour session is recommended for technical and functional users of Oracle WebCenter Content. In this session, we will explain how user authentication and authorization is implemented in WebCenter Content 11g as well as ways that single sign-on (SSO) can be used. Topics will include: - How authentication and authorization was handled in previous WebCenter Content Server versions - The WebLogic Server mechanisms now used to provide user access and content security - Dealing with external and internal users - Overview of the WebLogic Server LDAP provider configuration - How to differentiate Roles and Accounts - WebCenter Content credential mapping - Single Sign-on (SSO) - SAML and Kerberos Register now at http://bit.ly/PH7zDj

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• Why can't I connect to remote Microsoft SQL Server through SSH tunnel?

  - by Alexander

  I have at home a D-Link DIR-615 C1 router with DD-WRT. I set up the SSH server on the router, and log on through an SSH2-RSA passphrase-protected key. That router is the gateway between the local network and the internet. One of the computers on that network has Microsoft SQL Server 2008 installed, with TCP/IP protocol enabled through port 1433. I've set up port forwarding on the router, so that remote connections are possible and are, in fact, working (some developers log on remotely without problems). I am part of another network, that has internet access through a proxy server, which only has ports 80 and 443 opened. I can't connect to that MSSQL server on that remote server because 1433 port is closed on this network. I connected (using Putty) through 443 port to my router's SSH server, and set up 2 tunnels. One is for RDP (3389), and it's working. The other is for 1433 port, to connect to the server. I can't connect through the SSH tunnel to the MS SQL Server, neither through telnet, or through GUI clients. Am I missing something? Additional details: on connect, I get this error from SQL Server Management Studio: TITLE: Connect to Server Cannot connect to localhost:14330. ADDITIONAL INFORMATION: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 3) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=3&LinkId=20476 BUTTONS: OK The tunnel is configured like this: L14330 192.168.0.103:1433 192.168.0.103 is the permanent address of the SQL Server on the LAN. I also successfully forwarded TCP traffic of 3389 port to that IP, so tunneling is working to that IP address. When connecting without tunnel, through Microsoft SQL Server Management Studio, using the same method the connection establishes. Too bad my proxy doesn't allow 1433 port traffic, I wouldn't have this headache.

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• Windows 8 client virtualization

  - by John Paul Cook

  Hyper-V is coming to Windows 8, but you must have a processor that supports SLAT. Virtual machines created with Virtual PC aren’t easily transferred to Windows 2008 Hyper-V and vice-versa. With Windows 8, it will be easy to move vhds from Windows 8 on your laptop or desktop to Windows 8 server and back again. To find out if your processor supports SLAT, run coreinfo –v from a command window running as administrator. Download coreinfo from here . My MacBook Pro supports SLAT as this output shows:...(read more)

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• Multiple munin-nodes per machine

  - by Alexander T

  I'm collecting statistics remotely through JMX. The munin JMX plugin allows you to select an URL to connect to when aggregating statistics. This allows me to collect statistics from hosts which do not actually have munin-node installed. I find this a desirable property for some systems where I am hindered to install munin-node. How I work today is that if i want to collect JMX stats from machine A without munin-node, I install munin-node on machine B. Machine B then collects data from A via JMX, and reports it to munin-server, which runs on machine C. This setup requires multiple B-type machines: one per C-type machine. I would like to avoid this and instead use only one B-type machine to collect the data from all A-type machines and reports it to the only munin-server (C-type machine). As far as I understand this requires running multiple munin-nodes on B or in some other way report to munin-server that the B-type machine is reporting data from multiple sources. Is this possible? Thank you.

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