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• Only one user at once through remote

  - by Lazlo

  Hi, This is probably an easy question for anyone used to servers, and I know I once managed to do it, but I don't remember how. I purchased a VPS and am able to connect correctly as Administrator, and can start, let's say, MyServer.exe. Problem is, if I connect as Administrator on another device, this process is still there, but I can't see it. What I want to do is limit the connection per user to 1, and disconnect others when one logs in. I know there was a simpler term, a simple way, but I truly don't remember. And since I'm not used to the vocabulary of servers, I couldn't find it in the S/F questions. Thanks in advance!

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• Configure Thunderbird to never send (or even try to send) HTML emails

  - by Brent.Longborough

  Where can I set it to tell Thunderbird to always send as plain-text emails and never as HTML formatted messages? I hate HTML-based email, and always do everything possible to send my emails as plain text. Thunderbird is always pestering me with questions like "This recipient cannot receive HTML..." or "In order to sign this email, it needs to be converted to plain text..." Is there a way I can simply say to Thunderbird "Look, old chap, it's all plain text, so don't bother me any more, ever, again"?

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• sshd warning, "POSSIBLE BREAK-IN ATTEMPT!" for failed reverse DNS

  - by rking

  Whenever I SSH somewhere I get something like this in the logs: sshd[16734]: reverse mapping checking getaddrinfo for 1.2.3.4.crummyisp.net [1.2.3.4] failed - POSSIBLE BREAK-IN ATTEMPT! And it is right: if I do host 1.2.3.4 it returns 1.2.3.4.crummyisp.net, but if I do host 1.2.3.4.crummyisp.net it is not found. I have two questions: What security threat is there? How could anyone fake a one-way DNS in some threatening way? Do I have any recourse for fixing this? I'll send my ISP a bug report, but who knows where that'll go.

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• Google Chrome - Disable Location auto-detection also for google sites

  - by Michael

  I have read how to disable the location auto-detection here and also in Stackoverflow questions asked before: Google Chrome - Auto Detect Location and more... But it seems that it has no influence on the Google relates sites, e.g. Google translate, Google analytic, and even Google it self as a search engine. I have updated Google chrome to 21.0.1180.89 and then all my problems started, i am breaking my hand since i need to translate every word Google presents in their webpages of their products (or simply use their automatic translator). So i started to use Firefox again, but i really want to return back to Google, what can I do?

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• Best Practice: iDRAC & NIC Selection

  - by Josh Brower

  I am setting up a new Dell server with iDRAC 6 Express. My options for the NIC are: 1) Shared 2) Shared with failover to LOM2 3) Shared with failover to all LOMs The server has 2x dual-nic PCI-E cards (total of 4 nics) My questions are thusly: -What is best practice for setting this up? Is there any reason why I would not want option 3? -If the NIC is being used for both iDRAC and the OS, (there is no dedicated iDRAC nic), does this ever cause any kinds of issues for either iDRAC or the OS? Thanks- -Josh

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• Caching API Proxy Server

  - by edc1591

  I need to have a server that caches API responses and then forwards them along to a desktop app. I don't really have much experience with this, so I have a few questions. First of all, what kind of server should I get? I already use Linode for my websites, so ideally I'd like to go with them. I expect to get anywhere from 30 million to 40 million requests to my proxy server each month. Will a 512 Linode be able to support that? Also, is there any software out there that does this already, or will I have to write my own? The API responses are roughly 10 KB each on average, so doing the math, that's a lot of data each month. Should I just add more transfer to whatever server I buy, or can I somehow compress the API responses before sending them off to the user? Thanks for any help.

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• Why are two indicator-network versions being worked on?

  - by Daniel Rodrigues

  Some months ago, on the road to Ubuntu Maverick, a new system indicator, network (with connman as a backend), started to be developed. The plan was to get it into UNE and release it with no notifcation area. Unfortunately it didn't make it into the final version. However, continued efforts are still being made to improve it, and I'm getting regular updates. From a blueprint from the last UDS, I read that the plan was to ship no notification area and only indicators. For that, it was defined that nm-applet (backend: NetworkManager) should be ported to the appindicator library. Today I discovered that those efforts are going on and a initial version is available for testing, available from Matt Trudel PPA (Natty only). So, my questions is, to whoever has the necessary info: wouldn't it be easier to join efforts and concentrate the work in just one version (probably NetworkManager backend, as that's the official plan), instead of breaking those efforts apart and hampering both testing and developing? Both indicators are being developed by Canonical engineers, and that really doesn't make much sense. So, any Canonical engineer willing to clarify this?

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• Security Essentials not installing and I suspect my machine is infected with malware

  - by Jim

  My mouse seems to be automatically right-clicking every few seconds, and sometimes constantly. My cursor will abruptly become an hourglass for a moment every once in a while, as well. It happens in spurts, as in it hasn't happened for about 10 minutes, but the preceding 20 before that it was happening constantly. I suspect that my machine is infected with malware of some sort, so I've tried installing Microsoft Security Essentials, but it presents the following error upon installation failure: My questions are: How can I solve the MSE installation issue and run a scan? Are there any indications that malware isn't actually my issue? Is MSE my best way to go about solving my issue, assuming that malware actually is the problem? Many thanks!

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• SharePoint MVP Chat &ndash; tomorrow and day after

  - by Sahil Malik

  Ad:: SharePoint 2007 Training in .NET 3.5 technologies (more information). Yes we’re doing it again! After two very successful chats, a number of MVPs will be online in chat style answering your SharePoint questions. Here’s the schedule Tuesday May 25th at 4PM PDT (join here) Agnes Molnar Bill English Brian Farnhill Bryan Phillips Clayton Cobb David Mann <—ask him to tell a joke, he has a great sense of humor! Also bug him about Workflows. Matt McDermott Paul Stork Rob Bogue <—Ask him about WFs too. Rob Foster <— Him and Nick Swan run a SharePoint podcast. Sahil Malik <—I know him Saifullah Shafiq Ahmed   Wednesday at 9AM PDT (join here) Andrew Connell <— youngest MVP ever! LOL. Becky Bertram Bil Simser Chadima Kulathilake Claudio Brotto Gary Lapointe <—the stsadm extensions guy, ask him about powershell Darrin Bishop John Ross Michael Mukalian Muhanad Omar Randy Drisgill <—he created SP2010 starter master pages. Ask him about branding Shane Young Todd Bleeker Zlatan Dzinic Comment on the article ....

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• Announcement: DTrace for Oracle Linux General Availability

  - by Zeynep Koch

  Today we are announcing the general availability of DTrace for Oracle Linux. It is available to download from ULN for Oracle Linux Support customers.  DTrace is a comprehensive dynamic tracing framework that was initially developed for the Oracle Solaris operating system, and is now available to Oracle Linux customers. DTrace is designed to give operational insights that allow users to tune and troubleshoot the operating system. DTrace provides Oracle Linux developers with a tool to analyze performance, and increase observability into the systems they own to see how they work. DTrace enables higher quality applications development, reduced downtime, lower cost, and greater utilization of existing resources. Key benefits and features of DTrace on Oracle Linux include: • Designed to work on finding performance bottlenecks • Dynamically enables the kernel with a number of probe points, improving ability to service software • Enables maximum resource utilization and application performance • Fast and easy to use, even on complex systems with multiple layers of software If you already have Oracle Linux support, you can download DTrace from ULN channel. We have a dedicated Forum for DTrace on Oracle Linux, to discuss your experience and questions.

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• VirtualBox - split partitioned VDI into separate VDIs

  - by mathematical.coffee

  I'm very new to VirtualBox. I set up an Arch Linux VM and a Ubuntu VM (Ubuntu host), both sharing the same .vdi like so (I had in my mind a dual-boot situation): VDI file (25GB) |- /dev/sda1: 5GB (Arch Linux) |- /dev/sda2: [Ubuntu] |- /dev/sda5 (swap, 1GB) |- /dev/sda6 Ubuntu /, 9GB |- /dev/sda7 Ubuntu /home, 10GB I've now realised that I don't want a dual-boot-type setup, I'd rather boot each machine independently (my initial thought was to share /home between Ubunto and Arch). So, my question: Can I split /dev/sda1 and /dev/sda2 each to their own .vdi files so I can use them as completely separate machines? I'd rather not have to re-install either Arch (because it took me ages to work it out!) or Ubuntu (because I've already done a few GB of updates and don't want to redo them). I haven't been able to find anything about this - most questions I see are about converting a .vdi to a partition on the host, or splitting a .vdi into multiple smaller files (that are not independent), or converting a partition on the host to a .vdi file. cheers.

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• Alternative to Game State System?

  - by Ricket

  As far as I can tell, most games have some sort of "game state system" which switches between the different game states; these might be things like "Intro", "MainMenu", "CharacterSelect", "Loading", and "Game". On the one hand, it totally makes sense to separate these into a state system. After all, they are disparate and would otherwise need to be in a large switch statement, which is obviously messy; and they certainly are well represented by a state system. But at the same time, I look at the "Game" state and wonder if there's something wrong about this state system approach. Because it's like the elephant in the room; it's HUGE and obvious but nobody questions the game state system approach. It seems silly to me that "Game" is put on the same level as "Main Menu". Yet there isn't a way to break up the "Game" state. Is a game state system the best way to go? Is there some different, better technique to managing, well, the "game state"? Is it okay to have an intro state which draws a movie and listens for enter, and then a loading state which loops on the resource manager, and then the game state which does practically everything? Doesn't this seem sort of unbalanced to you, too? Am I missing something?

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• Is a code review which uses only code comments a good idea?

  - by gaRex

  Preconditions Team uses DVCS IDE supports comments parsing (like TODO and etc.) Tools like CodeCollaborator are expensive for budget Tools like gerrit are too complex for install or not usable Workflow Author publishes somewhere on central repo feature branch Reviewer fetch it and start review In case of some question/issue reviewer create comment with special label, like "REV". Such label MUST not be in production code -- only on review stage: $somevar = 123; // REV Why do echo this here? echo $somevar; When reviewer finish post comments -- it just commits with stupid message "comments" and pushes back Author pulls feature branch back and answer comments in similar way or improve code and push it back When "REV" comments have gone we can think, that review has successfully finished. Author interactively rebases feature branch, squashes it to remove those "comment" commits and now is ready to merge feature to develop or make any action that usualy could be after successful internal review IDE support I know, that custom comment tags are possible in eclipse & netbeans. Sure it also should be in blablaStorm family. Questions Do you think this methodology is viable? Do you know something similar? What can be improved in it?

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• How to install OpenCV without nVidia drivers

  - by Subhamoy Sengupta

  I have a laptop with on-board Intel graphics. I have been using OpenCV for years with this machine and I have managed to avoid manual compilation so far. But in Ubuntu 13.10, when I try to install libopencv-dev from the repositories, it brings along libopencv-ocl, which seems to be dependent on nvidia drivers. Letting the driver install messes up my xserver completely and when I do glxinfo afterwards, I get this: name of display: :0.0 Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Error: couldn't find RGB GLX visual or fbconfig Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". To solve this, I purge all nVidia drivers and reinstall xserver, much like it has been suggested here, and when I purge the nvidia drivers, OpenCV development libraries are also removed, as apt-get tells me they are no longer needed. This is foreign to me, because I expected a warning that I have installed packages that depend on this, but how can removing a dependency automatically remove the package I installed without warnings or asking? I understand it has something to do with nVidia being the provider of the libopencv-ocl in the repo. How could I get around it? I would rather not compile OpenCV if I can help it. I have seen similar questions, but not a suitable answer.

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• PHP remote development workflow: git, symfony and hudson

  - by user2022

  I'm looking to develop a website and all the work will be done remotely (no local dev server). The reason for this is that my shared hosting company a2hosting has a specific configuration (symfony,mysql,git) that I don't want to spend time duplicating when I can just ssh and develop remotely or through netbeans remote editing features. My question is how can I use git to separate my site into three areas: live, staging and dev. Here's my initial thought: public_html (live site and git repo) testing: a mirror of the site used for visual tests (full git repo) dev/ticket# : git branches of public_html used for features and bug fixes (full git repo) Version Control with git: Initial setup: cd public_html git init git add * git commit -m ‘initial commit of the site’ cd .. git clone public_html testing mkdir dev Development: cd /dev git clone ../testing ticket# all work is done in ./dev/ticket#, then visit www.domain.com/dev/ticket# to visually test make granular commits as necessary until dev is done git push origin master:ticket# if the above fails: merge latest testing state into current dev work: git merge origin/master then try the push again mark ticket# as ready for integration integration and deployment process: cd ../../testing git merge ticket# -m "integration test for ticket# --no-ff (check for conflicts ) run hudson tests visit www.domain.com/testing for visual test if all tests pass: if this ticket marks the end of a big dev sprint: make a snapshot with git tag git push --tags origin else git push origin cd ../public_html git checkout -f (live site should have the latest dev from ticket#) else: revert the merge: git checkout master~1; git commit -m "reverting ticket#" update ticket# that testing failed with the failure details Snapshots: Each major deployment sprint should have a standard name and should be tracked. Method: git tag Naming convention: TBD Reverting site to previous state If something goes wrong, then revert to previous snapshot and debug the issue in dev with a new ticket#. Once the bug is fixed, follow the deployment process again. My questions: Does this workflow make sense, if not, any recommendations Is my approach for reverting correct or is there a better way to say 'revert to before x commit'

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• How to setup and manage a shared hosting server on Windows Server 2008 R2 Web Edition?

  - by Motivated Student

  Background I am a newbie in using Windows Server 2008 R2 Web Edition (and other editions as well). I have a static IP, a very fast internet connection, a server (PRIMERGY TX100 S1 Server) and Windows Server 2008 R2 Web Edition (trial version). The objective is to setup the server to be a shared hosting server such that each of my friends has a private account to manage his/her domain. to upload his/her web content to the server using the encrypted ftp. to manage database administration. to manage Certificate. etc Questions Is there a good reference to learn "how to setup and manage a shared hosting server on Windows Server 2008 R2" ? What are the rough steps I have to do to accomplish my objective?

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• Oracle Linux Partner Pavilion Spotlight

  - by Ted Davis

  With the first day of Oracle OpenWorld starting in less than a week, we wanted to showcase some of our premier partners exhibiting in the Oracle Linux Partner Pavilion ( Booth #1033) this year. We have Independent Hardware Vendors, Independent Software Vendors and Systems Integrators that show the breadth of support in the Oracle Linux and Oracle VM ecosystem. We'll be highlighting partners all week so feel free to come back check us out. Centrify delivers integrated software and cloud-based solutions that centrally control, secure and audit access to cross-platform systems, mobile devices and applications by leveraging the infrastructure organizations already own. From the data center and into the cloud, more than 4,500 organizations, including 40 percent of the Fortune 50 and more than 60 Federal agencies, rely on Centrify's identity consolidation and privilege management solutions to reduce IT expenses, strengthen security and meet compliance requirements. Visit Centrify at Oracle OpenWorld 2102 for a look at Centrify Suite and see how you can streamline security management on Oracle Linux.  Unify identities across the enterprise and remove the pain and security issues associated with managing local user accounts by leveraging Active Directory Implement a least-privilege security model with flexible, role-based controls that protect privileged operations while still granting users the privileges they need to perform their job Get a central, global view of audited user sessions across your Oracle Linux environment  "Data Intensity's cloud infrastructure leverages Oracle VM and Oracle Linux to provide highly available enterprise application management solutions.  Engineers will be available to answer questions about and demonstrate the technology, including management tools, configuration do's and don'ts, high availability, live migration, integrating the technology with Oracle software, and how the integrated support process works."    Mellanox’s end-to-end InfiniBand and Ethernet server and storage interconnect solutions deliver the highest performance, efficiency and scalability for enterprise, high-performance cloud and web 2.0 applications. Mellanox’s interconnect solutions accelerate Oracle RAC query throughput performance to reach 50Gb/s compared to TCP/IP based competing solutions that cap off at less than 12Gb/s. Mellanox solutions help Oracle’s Exadata to deliver 10X performance boost at 50% Hardware cost making it the world’s leading database appliance. Thanks for reviewing today's Partner spotlight. We will highlight new partners each day this week leading up to Oracle OpenWorld.

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• Amazon EC2 EBS volume scheduled backup/snapshots using puppet / similar tools

  - by Ehrann Mehdan

  I am not a Linux admin, although I wish I was, and I have seen these questions Amazon EC2 Backup Strategy Amazon EC2 + EBS:: Regular backup plan? Simple Backup Strategy for Amazon EC2 instances / volumes? And this suggestion http://alestic.com/2009/09/ec2-consistent-snapshot I tried using command line + crontab (the command line works, but crontab for some reason, doesn't) But I'm still pretty lost, all I want is an automated, rolling backup of my amazon EC2 (EBS) data (by rolling I mean keep 3-4 weeks back, but delete old snapshots as new ones come for cost control) And as things usually go, if there is something that is hard and painful, someone creates a solution for it. My question is simple, is there a way using a tool like Puppet to do it without a painful learning curve? (or via other tools like http://ylastic.com) If yes, how?

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• How to make a streaming server to stream media from computer to mobile phone in wifi?

  - by zkz

  Usually we have many HD movies in our computer, but we want to see them by our mobile phone. This requirement produces some questions: 1?the HD videos are too big to transfer to phone timely and it it hard to play on phone smoothly, so we have to transform the videos smaller and fit the screen of phone. 2?the coded format of the videos are varied, but limited types are supported by mobile phone, so we should transform the coded format to those supported by mobile phone. I've leaned the streaming media fit this problem, what I want is: 1?are there any good opensource projects fit this(ffmpeg?live555? darwin?)? 2?are they quick enough to transform coded format and transfer to mobile phone to play with no delay? Thank u very much!

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• Top ten security tips for non-technical users

  - by Justin

  I'm giving a presentation later this week to the staff at the company where I work. The goal of the presentation is to serve as a refresher/remidner of good practices that can help keep our network secure. The audience is made up of both programmers and non-technical staff, so the presentation is geared for non-technical users. I want part of this presentation to be a top list of "tips". The list needs to be short (to encourage memory) and be specific and relevant to the user. I have the following five items so far: Never open an attachment you didn't expect Only download software from a trusted source, like download.com Do not distribute passwords when requested via phone or email Be wary of social engineering Do not store sensitive data on an FTP server Some clarifications: This is for our work network These need to be "best practices" tips for the end-user, not IT policy We have backups, OS patches, firewall, AV, etc, all centrally managed This is for a small business (less than 25 people) I have two questions: Do you suggest any additional items? Do you suggest any changes to existing items?

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• How do I get excel to close completely after creating a macro in a personal workbook?

  - by Greg B

  I am using Microsoft Excel 2007 and have several macros in my personal.xlsb workbook, which I use often, so it is very convenient that Excel opens them automatically when it starts. What I don't like is when I click on the "X" in the upper right corner of the window Excel does not exit when I close the last visible workbook. I think that this is because personal.xlsb is still open (though hidden). There are several other questions here on Superuser that have people remove personal.xlsb or move it so it doesn't open on startup (question 65297) or change settings to have only one window show in the taskbar (question 86989). (Sorry there are no hyperlinks--apparently I need more reputation to add additional hyperlinks.) I would like to have personal.xlsb open when I open Excel, have each Excel window show in the taskbar but have Excel exit when I click the "X" on the last workbook that isn't personal.xlsb. Any thoughts on how to achieve this?

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• Domain connection shows as "unauthenticated"

  - by gareth89

  I have seen various different questions for this problem floating around but either the circumstances arent the same or the solution doesnt work so thought i would post it to see if anybody has any suggestions. Various domain PCs and laptops appear to randomly give the connection name of "lewis.local 2(Unauthenticated)" - lewis.local being our domain - and provides an exclamation mark where the network type logo is normally shown. This also appears to happen every time connecting via vpn. Our setup is: 2 servers both running windows server 2003 R2 (x32) main server has AD, DNS and DHCP installed IPv4 on approx 30 client machines (some wired, some wireless) If anybody has any thoughts on solutions i would appreciate it. I have tried removing all but AD server roles, resetting all of the systems and nothing. It doesnt prevent anything from working just like a domain connection most of the time however it is getting fustrating! Also dont know if it could have anything to do with it but the DHCP server seems to have quite a long lead time on issuing the IP address to the client.

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• ADDS: 1 - Introducing and designing

  - by marc dekeyser

  Normal 0 false false false EN-GB X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-fareast-language:EN-US;} What is ADDS?  Every Microsoft oriented infrastructure in today's enterprises will depend largely on the active directory version built by Microsoft. It is the foundation stone on which all other products (Exchange, update services, office communicator, the system center family, etc) rely on to get their information. And that is just looking at it from an infrastructure perspective. A well designed and implemented Active Directory implementation makes life for IT personnel and user alike a lot easier. Centralised management and the abilities opened up  by having it in place are ample.  But what is Active Directory Domain Services? We can look at ADDS as a centralised directory containing all objects your infrastructure runs on in one way or another. Since it is a Microsoft product you'll obviously not be seeing linux or mac clients listed in here (exceptions exist) but in general we can say it contains everything your company has in place in one form or another.  The domain name services. The domain naming service (or DNS for short) is a service which translates IP address (the identifiers for each computer in your domain) into readable and easy to understand names. This service is a prequisite for ADDA to work and having wrong record in a DNS server will make any ADDS service fail. Generally speaking a DNS service will be run on the same server as the ADDS service but it is worth wile to remember that this is not necessary. You could, for example, run your DNS services on a linux box (which would need special preparing to host an ADDS integrated DNS zone) and run the ADDS service of another box… Where to start? If the aim is to put in place a first time implementation of ADDS in your enterprise there are plenty of things to consider depending on what you are going to do in the long run. Great care has to be taken when first designing and implementing as having it set up wrong will cause a headache down the line. It is for that reason that I like to start building from the bottom up and start with a generic installation of ADDS (which will still differ for every client) and make it adaptable for future services which can hook in to the existing environment. Adapting existing environments is out of scope for this document (and series) although it is possible to take the pointers and change your existing environment to run in a smoother manor. Take great care when changing things as one small slip of the hand can give you a forest wide failure… Whenever starting with an ADDS deployment I ask the client the following questions:  What are your long term plans and goals?  How flexible do you want it? Are you currently linux heavy and want to keep this or can we go for an all Microsoft design? Those three questions should give some sort of indicator what direction can be taken and if the client has thought about some things themselves :).  The technical side of things  What is next to consider is what kind of infrastructure is already in place. For these series I'll keep it simple and introduce some general concepts without going in to depth on integrating ADDS with other DNS services.  Building from the ground up means we need to consider our layers on which our infrastructure will rely. In my view that goes as follows:  Network (WAN/LAN links and physical sites DNS Namespacing All in one domain or split up in different domains/forests? Security (both for ADDS and physical sites) The network side of things  Looking at how the network is currently set up can potentially teach us a large deal about the client. Do they have multiple physical site? What network speeds exist between these sites, etc… Depending on this information we will design our site links (which controls replication) in future stages. DNS Namespacing Maybe the single most intresting thing to know is what the domain will be named (ADDS will need a DNS domain with the same name) and where this will be hosted. Note that active directory can be set up with a singe name (aka contoso instead of contoso.com) but it is highly recommended to never do this. If you do end up with a domain like that for some reason there will be a lot of services that are going to give you good grief in the future (exchange being one of them). So one of the best practises would be always to use a double name (contoso.com or contoso.lan for example). Internal namespace A single namespace is just what it sounds like. You have a DNS domain which is different internally from what the client has as an external namespace. f.e. contoso.com as an external name (out on the internet) and contoso.lan on the internal network. his setup is has its advantages in that you have more obscurity from the internet in the DNS side of this but it will require additional work to publish services to the web. External namespace Quite like the internal namespace only here you do not differ the internal namespace of the company from what is known on the internet. In this implementation you would host your own DNS servers for the external domain inside the network. Or in other words, any external computer doing a DNS lookup would contact your internal DNS server for the resolution. Generally speaking this set up is a bad idea from the security side of things. Split DNS Whilst using an external namespace design is fairly easy it involves a lot of security risks. Opening up you ADDS DSN servers for lookups exposes your entire network to the internet and should be avoided at any cost. And that is where the "split DNS" design comes in. In this setup up would still have the same namespace internally and externally but you would be using different DNS servers for lookups on the external network who have no records of your internal resources unless you explicitly publish them. All in one or not? In determining your active directory design you can look at the following possibilities:  Single forest, Single domain Single forest, multiple domains Multiple forests, multiple domains I've listed the possibilities for design in increasing order of administrative magnitude. Microsoft recommends trying to use a single forest, single domain in as much situations as possible. It is, however, always possible that you require your services to be seperated from your users in a resource forest with trusts set up between the different forests. To start out I would go with the single forest design to avoid complexity unless there are strict requirements to have multiple forests. Security What kind of security is required on the domain and does this reflect the physical security on the sites? Not every client can afford to have a domain controller in a secluded server room on every site and it is exactly for that reason that Microsoft introduced the RODC (read only domain controller). A RODC is a domain controller that has been limited in functionality, in essence it will only cache the data you explicitly tell it to cache and in the case of a DC compromise (it being stolen) only a limited number of accounts will need to be affected. Th- Th- Th- That’s all folks! Well at least for now! In future editions of this series we’ll be walking through the different task that need to be done and the thought which needs to be put in to it. But for all editions we’ll be going from the concept of running a single forest, single domain with a split DNS setup… See you next time!

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• Should certain math classes be required for a Computer Science degree?

  - by sunpech

  For a Computer Science (CS) degree at many colleges and universities, certain math courses are required: Calculus, Linear Algebra, and Discrete Mathematics are few examples. However, since I've started working in the real world as a software developer, I have yet to truly use some the knowledge I had at once acquired from taking those classes. Discrete Math might be the only exception. My questions: Should these math classes be required to obtain a computer science degree? Or would they be better served as electives? I'm challenging even that the certain math classes even help with required CS classes. For example, I never used linear algebra outside of the math class itself. I hear it's used in Computer Graphics, but I never took those classes-- yet linear algebra was required for a CS degree. I personally think it could be better served as an elective rather than requirement because it's more specific to a branch of CS rather than general CS. From a Slashdot post CS Profs Debate Role of Math In CS Education: 'For too long, we have taught computer science as an academic discipline (as though all of our students will go on to get PhDs and then become CS faculty members) even though for most of us, our students are overwhelmingly seeking careers in which they apply computer science.'

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• Live Oracle AppAdvantage Webcast in APAC: Register Today

  - by Tanu Sood

  How Oracle Applications Customers can Extend the Value of their Investments How Oracle Applications Customers can Extend the Value of their Investments Oracle AppAdvantage is an exciting new initiative for Oracle enterprise application customers including E-Business Suite, PeopleSoft, JD Edwards, and Siebel. Oracle AppAdvantage provides strategies to help applications customers simplify, differentiate and innovate their investments through a pace layered architecture that can adjust with business requirements.Whether your organization is extending your applications to mobile devices, building a customer self-service portal, taking applications to the cloud, integrating applications with your other business critical applications or securely extending them to serve your specific needs, you can take the extension or customization work out of the applications and seamlessly extend with Oracle Fusion Middleware technologies as required. This webcast will discuss: Strategies to help applications customers simplify, differentiate and innovate their investments through a pace layered architecture How to get started and implementation use cases with customer examples Register today for this webcast on November 6. Can't wait until the Live Webcast? and ask him a question! If you are facing problems with registration or would like further information please email us at [email protected] -- For any questions on Oracle, our events and products please call or send us an email. Date Wednesday, 6th November 2013 Time Mumbai 10:30 a.m. (GMT +5:30) Singapore 1:00 p.m. (GMT +8:00) Sydney 4:00 p.m. (GMT +11:00)   -- The duration of this Webcast is 60 minutes. -- Contact Us | Legal Notices | Privacy Copyright © 2013, Oracle and/or its affiliates. All rights reserved.

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