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  • Samsung i780 networking problem

    - by Infinity
    Hello guys! Maybe this is not the right place to ask this, but I give a try for it. Please don't rate it down, just ignore it if you don't like. So I have a Samsung i780 mobile phone and I would like to use the internet through my wireless router. I have connected to it. I got an IP address. My laptop is also connected to the same wireless network and I can ping the mobile phone and I get answer. When I open the internet explorer and enter an address it says that it cannot connect to the internet. I have googled very much, but can't find the problem. What do you think, what is the solution?

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  • As a student looking for hands-on experience, how should I configure my test lab to accurately reflect a business setting?

    - by Moe
    I'm one class away from my BA IT, I took several classes in general IT. Out of all the books I found just two to be really beneficial, so I'm trying to get the hands on experience. I want to build a small test network that has both wireless and also wired clients, a printer, a laptop, a desktop, and server (I have 2x 1TB drives of data that I want to be available to all computers). What should I do to configure these in a way that will reflect how a small business might be set up, so that I can work towards some meaningful experience.

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  • How do I get Outlook (via Exchange) to accept Thunderbird/Lightning meeting requests?

    - by user39646
    Lightning/1.0b1 addon to Thunderbird/3.0.4 has no problem accepting Meeting Requests sent from my network Outlook session. However, Meeting Requests sent to an email address hosted on a POP server and to be delivered to my Outlook mailbox never seem to arrive in any fashion. Nothing in my Outlook Inbox or Messages and nothing on my calendar or anything. I was expecting at least a std email, perhaps with an *ics attachment file, to arrive just like regular Thunderbird-originated email does, but no dice. Any ideas on what I'm doing wrong?

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  • Cisco T1 Routing Help

    - by Joseph
    Thanks to someone on this site I was able to get the Serial0/0 interface up. I now have: DCD=up DSR=up DTR=up RTS=up CTS=up My next challenge seems to be in the routing and/or PC ip setup. This are the pertinent details from L3: WAN Network: 6.59.186.60/30 Level3 Side: 6.59.186.61 Customer Side: 6.59.186.62 Cust. LAN IPs: 6.59.192.224/27 What would be the IOS commands to setup this route correctly? Am I correct that I would the choose an IP like 6.59.192.224, subnet 255.0.0.0, gateway 6.59.186.62? Thanks

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  • How do I use an SSH public key from a remote machine?

    - by kubi
    Setup The public keys are set up on a Macbook. I can do a passwordless push to github and a server (iMac) on the local network. The Problem I know the keys are partially setup correctly, because I everything works if I'm sitting at the Macbook. What doesn't work is when I SSH into the Macbook remotely and attempt to push to github or to the iMac server. I'm prompted to input my SSH key passphrase. What am I missing to enable pushing to github from the Macbook while logged in remotely from the iMac?

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  • Cat 6 Only 100mbit speed

    - by Stu2000
    I tried two different cat6 cables directly connected between my two ubuntu machines. This one I ordered online: http://www.amazon.co.uk/gp/product/B002SQPDXS/ref=wms_ohs_product only achieves 100mbit speeds, but does appear to be supporting cross-talk (direct pc to pc), the other cat 6 cable, worked perfectly and gets the full 1gigabit speed. Both tests were performed using ftp and checking the network monitor with direct pc to pc connection. Did the product from amazon lie to me or do I need to manually set a setting somewhere in ubuntu for some cables? I had thought 10 quid for 20m of gigabit ethernet cable was a bit cheap, you get what you pay for... Regards, Stu Update: It seems that after rebooting, the device is set to 1000mbit sec when looking it up with sudo ethtool eth0 However after a while, this will drop down to just 100, after which to reset it to 1000 again, I have to reboot, and simply unpugging and re-plugging in the cable doesn't do it. I tried setting this in networking config file as suggested here: auto eth0 iface eth0 inet static pre-up /usr/sbin/ethtool -s eth0 speed 1000 duplex full but that resulted in my networking failing to start. Is there a problem with my 'auto-negotiation' or something? Can I manually override a setting to 1000mbit?

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  • Python multithreading not working on VPS server

    - by Sabirul Mostofa
    I am running an python multithreaded application with multiple processes which scrapes data from some websites. While running on my localhost It works great, but on the vps server I am using( Centos 5.8, 2.6 GHZ with 4 cores) performs very slow. From the nethogs command I get the network usage too low. I get around 8KBps with 15 threads. On other hand, in my PC I get the usage around 100-120KBPS. I have read about the Python GIL and threading limitations. It seems GIL never releases the lock on the VPS though it should while doing I/0 Is there any configuration in the VPS that I need to change for the threading to work properly?

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  • squid configuration change to accept http request on LAN

    - by Ratan Kumar
    installed squid + dansguardian to block adult content on my linux (ubuntu 12.10) . everything worked fine. it has blocked as expected . now the problem is i am also running an apache server for my LAN . ( kind of website ) but when accessing it via 192.168.0.1 , it says squid has blocked the connection , this is the exact error The following error was encountered while trying to retrieve the URL: http: //192.168.0.16/ Connection to 192.168.0.16 failed. The system returned: (113) No route to host The remote host or network may be down. Please try the request again. Your cache administrator is webmaster. before configuring the squid it was working fine . what changes in the squid.conf i have to make . i tried acl Safe_ports 80 allow_all Safe_ports ( i want to know how i can configure it again to listen HTTP request from LAN )

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  • We'll be at QCon San Francisco!

    - by Carlos Chang
    Oracle Technology Network is a Platinum sponsor at QCon San Francisco. Don’t miss these great developer focused sessions: Shay Shmeltzer - How we simplified Web, Mobile and Cloud development for our own developers? - the Oracle Story Over the past several years, Oracle has beendeveloping a new set of enterprise applications in what is probably one of the largest Java based development project in the world. How do you take 3000 developers and make them productive? How do you insure the delivery of cutting edge UIs for both Mobile and Web channels? How do you enable Cloud based development and deployment? Come and learn how we did it at Oracle, and see how the same technologies and methodologies can apply to your development efforts. Dan Smith - Project Lambda in Java 8 Java SE 8 will include major enhancements to the Java Programming Language and its core libraries.  This suite of new features, known as Project Lambda in the OpenJDK community, includes lambda expressions, default methods, and parallel collections (and much more!).  The result will be a next-generation Java programming experience with more flexibility and better abstractions.   This talk will introduce the new Java features and offer a behind-the-scenes view of how they evolved and why they work the way that they do. Arun Gupta - JSR 356: Building HTML5 WebSocket Applications in Java The family of HTML5 technologies has pushed the pendulum away from rich client technologies and toward ever-more-capable Web clients running on today’s browsers. In particular, WebSocket brings new opportunities for efficient peer-to-peer communication, providing the basis for a new generation of interactive and “live” Web applications. This session examines the efforts under way to support WebSocket in the Java programming model, from its base-level integration in the Java Servlet and Java EE containers to a new, easy-to-use API and toolset that are destined to become part of the standard Java platform. The complete conference schedule is here: http://qconsf.com/sf2012/schedule/wednesday.jsp But wait, there’s more! At the Oracle booth, we’ll also be covering: Oracle ADF Mobile Oracle Developer Cloud Service Oracle ADF Essentials NetBeans Project Easel Hope to see you there! 

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  • Detect damage done by virus

    - by user38471
    Hey, this morning after I went to college a virus infected my pc without any user interaction at my end. When I came home my computer was completely frozen and infected with lots of trojans. I have not typed anything important since returning so keys cannot be logged. However I want to know exactly when my computer crashed from the time of infection to see what could potentially be done remotely by a hacker. The virus my pc was diagonosed with was "fakespypro" http://www.microsoft.com/security/portal/Threat/Encyclopedia/Entry.aspx?Name=Win32%2fFakeSpypro on a fully updated windows 7 installation with firewall enabled. My computer was connected to an internal dorm room network, so probably that has had to do something with it. Any further information about how I could backtrace this virus infection or ways to discover what data might be stolen would be greatly appriciated.

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  • The NEW Oracle Enterprise Manager Extensibility Exchange

    - by Joe Diemer
    Oracle Enterprise Manager continues to expand its Eco-system with the NEW Extensibility Exchange! The Exchange offers a searchable listing of Enterprise Manager entities. Today it’s stocked with plug-ins and connectors for Enterprise Manager 12c and 11g. Anyone - partners, customers, ACE community members, anyone - can post an entity subject to approval of course. So in addition to plug-ins and connectors, the Exchange will have best practices, deployment procedures, templates, and essentially any Enterprise Manager entity that’s relevant. The Exchange provides Development Resources to guide contributors in the creation of plug-ins and connectors. A Community Resources page features plug-ins validated through the Oracle Validate Integration program as well as some other contributions important to customers.  You can also discover ways to get more involved with Enterprise Manager through the user and partner communities. The Exchange was announced in the October 2nd Enterprise Manager Partner Press Release  and is being presented at Oracle OpenWorld 2012 during the following sessions:    •    “Using Oracle Enterprise Manager to Manage Your Own Private Cloud” General Session – Tuesday Oct 2nd    •    “Managing Heterogeneous Environments with Oracle Enterprise Manager” Conference Session – Tuesday Oct 2nd    •    “Using Management Already Built into Oracle Products: Oracle Enterprise Manager” Oracle Partner Network Exchange Session – Wednesday Oct 3rd Check it out at http://www.oracle.com/goto/emextensibility, and let us know what you think by posting a comment below or clicking the "Forum" button at the Exchange itself.

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  • File permissions issue with an NFSv4 share, uploaded from a Mac Lion

    - by POP.sicle
    I have an NFSv4 share that was working fine, with Macs using Snow Leopard, to share files across the network. The NFS share has one cloned user/group that all clients autoconnect as. However, when I use a Lion Mac to copy a file from their user directory to the NFS, no other computer (mac SL/mac Lion/Win7) can edit/delete/write to the file that was uploaded - despite having the correct read/write/ex permissions visible on the NFS and through terminal. Attempting to edit the file permissions through Finder completely locks the file. I suspect this has something to do with Lion's ACLs (or maybe its version control) conflicting with NFSv4. Is there a way to disable or ignore extended ACLs or extended file permissions on the NFSv4 side, that would allow users to not run into this conflict? The work around currently is to use NFS Manager and set automounts to ignore ownership but installing NFS manager and configuring automounts for all of the computers seems more troubling than attempting to reconfigure the NFS settings. Advice?

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  • CodePlex Daily Summary for Thursday, October 25, 2012

    CodePlex Daily Summary for Thursday, October 25, 2012Popular ReleasesTEncoder: 2.9: -2.9 -Added: Support for audio codec Opus -Added: Support for .opus files -Added: Decreased main window dimensions (will reset position info) -Fixed: Custom arguments were not passed if codec is "Copy" -Fixed: MEncoder "Direct Stream Copy" container problem -Fixed: Minor UI problems -Updated: MPlayer and MEncoder to SB41 -Updated: MediaInfo to 0.7.61 -Updated: FFmpeg to latest from ffmpeg.zeranoe.comdcview: DCView 1.3.9: Clien ?? ?????? ??, ???, ??? ??? ??CRM 2011 Web Resource Linker/Publisher: WebResourceLinker: Initial releaseMobilviWP7: MobilviWP7 1.2: Stabilna i przetestowana wersja.Posh for Jammer: jammer_v0.1_beta: First release of a number of PowerShell Functions calling the Yammer API.Style MVVM: 2.0.3: This is both a feature release and a Bug Fix release Features The Main new Feature is the ability to add event handlers from XAML using this new syntax View:EventHandler.Attach="EventName => ViewModelMethod($eventArgs)" New Example app that shows one or two features of the framework on each page, allowing for more straight forward examples. Bug Fixes IUIVisualizationService is now exported correctly and you can import it into your ViewModels DelegateCommand had a bug where it wasn't r...MCEBuddy 2.x: MCEBuddy 2.3.5: Changelog for 2.3.5 (32bit and 64bit) 1. Fixed a bug causing MCEBuddy to crash during or after installation on Windows XP 2. Bugfix for resource leak with UPnP which would lead to a failure after many days 3. Increased the UPnP discovery re-scan interval from 10 minutes to 30 minutes 4. Added support for specifying TVDB and IMDB id’s in the conversion task page (forcing the internet lookup for metadata)WPF About Box: WPF About Box 1.1.1.1: First Stable ReleaseEdi: First Alpha Version: The initial release does a lot of things out of the box (theming, editing with highlighting, Find/Replace, MRU List). Read the Readme.txt file in the Edi Sub-project to get full details.CRM 2011 Visual Ribbon Editor: Visual Ribbon Editor (1.3.1025.5): [NEW] Support for connecting to CRM Online via Office 365 (OSDP) [NEW] Current connection information and loaded ribbon name are displayed in the status bar [IMPROVED] Connect dialog minor improvements and error message descriptions [IMPROVED] Connecting to a CRM server will close currently loaded ribbon upon confirmation (if another ribbon was loaded previously) [FIX] Fixed bug in Open Ribbon dialog which would not allow to refresh entity list more than oncejob board light version: version 1.0: recuiter section jobseeker section spam flagging advanced search filtering customizable templatesReadable Passphrase Generator: KeePass Plugin 0.8.0: Changes: Interrogative phrases (questions) like why did the statesman burgle amidst lucid sunlamps Support transitive / intransitive verbs (whether a verb needs a subject or not). Change adverbs to be either before or after the verb, at random. Add an "equal" version of each strength, where each possibility is equally likely (for password purists). 3401 words in the default dictionary (~400 more than previous release) Fixed bugs when choosing verb tensesfastJSON: v2.0.9: - added support for root level DataSet and DataTable deserialize (you have to do ToObject<DataSet>(...) ) - added dataset testsMicrosoft Ajax Minifier: Microsoft Ajax Minifier 4.72: Fix for Issue #18819 - bad optimization of return/assign operator.DNN Module Creator: 01.01.00: Updated templates for DNN7 ( ie. DAL2, Web Service API ). Numerous bug fixes and enhancements.WPF Application Framework (WAF): WPF Application Framework (WAF) 2.5.0.390: Version 2.5.0.390 (Release Candidate): This release contains the source code of the WPF Application Framework (WAF) and the sample applications. Requirements .NET Framework 4.0 (The package contains a solution file for Visual Studio 2010) The unit test projects require Visual Studio 2010 Professional Changelog Legend: [B] Breaking change; [O] Marked member as obsolete WAF: Fix recent file list remove issue. WAF: Minor code improvements. BookLibrary: Fix Blend design time support o...Fiskalizacija za developere: FiskalizacijaDev 1.1: Ovo je prva nadogradnja ovog projekta nakon inicijalnog predstavljanja - dodali smo nekoliko feature-a, bilo zato što smo sami primijetili da bi ih bilo dobro dodati, bilo na osnovu vaših sugestija - hvala svima koji su se ukljucili :) Ovo su stvari riješene u v1.1.: 1. Bilo bi dobro da se XML dokument koji se šalje u CIS može snimiti u datoteku (http://fiskalizacija.codeplex.com/workitem/612) 2. Podrška za COM DLL (VB6) (http://fiskalizacija.codeplex.com/workitem/613) 3. Podrška za DOS (unu...Liberty: v3.4.0.0 Release 20th October 2012: Change Log -Added -Halo 4 support (invincibility, ammo editing) -Reach A warning dialog now shows up when you first attempt to swap a weapon -Fixed -A few minor bugsClosedXML - The easy way to OpenXML: ClosedXML 0.68.1: ClosedXML now resolves formulas! Yes it finally happened. If you call cell.Value and it has a formula the library will try to evaluate the formula and give you the result. For example: var wb = new XLWorkbook(); var ws = wb.AddWorksheet("Sheet1"); ws.Cell("A1").SetValue(1).CellBelow().SetValue(1); ws.Cell("B1").SetValue(1).CellBelow().SetValue(1); ws.Cell("C1").FormulaA1 = "\"The total value is: \" & SUM(A1:B2)"; var...Orchard Project: Orchard 1.6 RC: RELEASE NOTES This is the Release Candidate version of Orchard 1.6. You should use this version to prepare your current developments to the upcoming final release, and report problems. Please read our release notes for Orchard 1.6 RC: http://docs.orchardproject.net/Documentation/Orchard-1-6-Release-Notes Please do not post questions as reviews. Questions should be posted in the Discussions tab, where they will usually get promptly responded to. If you post a question as a review, you wil...New Projects6_6_6_w_m_s_open: jwervxsdf7COM0207 Web Scripting and Content Creation Exercises: Loretta Rose Web Scripting and Content Creation ExercisesAcademyPVT: The project is dedicated to my studies at the Academy Pvt. It will be posted various learning tasks, and my research on the ASP.NET.Arduino Solar Meter: An Arduino is used to monitor several item in the meter cabinet. The standard version can log 3 S0 kWh meters and upload results to PVoutput and local SD card.BookCaching: BookCaching - GeoCaching with books. A funny new way to discover books around you!BruceCommonCMS: This is a CMS system developed by ASP.net(C#) with Visual Studio 2010/2012. My aim is to build a dynamic & flexible CMS system.Bullet On Rails for MS MVC: Bullet On Rails provides out-of-box scaffold controllers ala Ruby on Rails for MS MVC. It also provides automatic validations for information found in the LINQ to SQL generated file such as: - Type of field - Date format - Length of field - Required fieldCalculator++: Calculator++ will be the best application in parsing and calculating equations results.Collections: Collection Management for TV Series and Anime.Common Key Password Generator: This utility constructs a complex password from a GUID. The number of possible combinations generated approaches 16 to the power of 32.Cosmos HiDefOs: HiDef Os is a research project, to make a HD driver that runs smoothly. This is a subproject of QuicksilverOS and is fully open-source.EmpireWork Professional Social Network: EmpireWork Professional Social Network Locations: http://empirework.com http://empirework.ru http://empirework.com.ua http://empirework.byeWay payment gateway provider for NB_Store: eWay payment gateway provider for NB_StoreHDK - WinRT MVVM and MEF Friendly Prism Framework port: HDK - is a "spare-time" framework for WinRT development. Solution consists of: - MVVM - Event Aggregator - PRISM - other useful extensions HowToSetUpACodeplexProject: Er is nog niets gebeurdiBackup Explorer: The goal of this application is to provide a quick way to explore any iOS backup (IPhone, Ipad..)istomato: istomatojob board light version: job board light versionMaternity System: It's a project in development stage objectived to help maternity hospitals to make a better treatment for him usersmeu-projeto: sdalçfj lasdjlfjdsalfj lsdafldsajl fjsdalf jlsdaj flsadjl fjdsal fjdsal jflsdajf lksdajfksadMicrosoft Casablanca Samples and Tutorials: The code repository associated with http://cloudysea.wordpress.com, which discusses the Casablanca Project (http://msdn.microsoft.com/en-us/devlabs/casablanca)myvideo: myvideoProject13251024: papaProjekt PHP: Mitt projekt i kursen PHPSharePoint Version History Extractor: Windows app used to migrate/extract version history from a versioned document library into separate files with historical metadata.Site Backup Repackager: Use the Site Backup Repackager to reformat a SP2007 site backup (.cmp) for SP2010. SpiritMVVM: SpiritMVVM is a Model-View-ViewModel library, focused on richness of feature-set and cross-platform compatibility, using the Portable Class Library.SQL Data transfer wizard: It replaces export data in SSMS by offering dependency aware order of table transfer. studyproject: PHP, HTML, ZFTAPI Connector for Dynamics CRM 2011: Open source Caller ID screenpop/CTI for TAPI enabled phone systems. Simply install the TAPI software on your computer then configure this to connect to DynamicsTFS2012: This is project that used for coding VP8.NET: VP8.NET is a dual-licensed commercial/GPL C++ CLR wrapper which allows .NET applications to easily use the VP8 video codec.X0s0m0a0r0t0W1M1S1: 32432432432432

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  • Why do apt-get and wget fail on my server when ping is working?

    - by klox
    Yesterday my server still OK, but today after try to sudo apt-get update i got this error: update process. I try: sudo rm /var/lib/apt/lists/* -vf And got This.Then try update again, but it's not solving my problem then show May be still same error. I checked my internet connection try ping google.com, get result : PING google.com (74.125.235.40) 56(84) bytes of data. From 136.198.117.254: icmp_seq=1 Redirect Network(New nexthop: fw1.jvc-jein.co.id (136.198.117.6)) 64 bytes from sin01s05-in-f8.1e100.net (74.125.235.40): icmp_req=1 ttl=53 time=20.6 ms 64 bytes from sin01s05-in-f8.1e100.net (74.125.235.40): icmp_req=2 ttl=53 time=18.2 ms 64 bytes from sin01s05-in-f8.1e100.net (74.125.235.40): icmp_req=3 ttl=53 time=33.0 ms 64 bytes from sin01s05-in-f8.1e100.net (74.125.235.40): icmp_req=4 ttl=53 time=30.0 ms 64 bytes from sin01s05-in-f8.1e100.net (74.125.235.40): icmp_req=5 ttl=53 time=28.1 ms In some sites said that may be it caused by getdeb server is down. try to install: jeinqa@SVRQAR:~$ sudo apt-get install pastebinit Reading package lists... Error! E: Encountered a section with no Package: header E: Problem with MergeList /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_precise-security_restricted_binary-amd64_Packages E: The package lists or status file could not be parsed or opened. try : sudo ufw status verbose result : Status: inactive

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  • Restore access to Cisco Connect after changing router settings

    - by StasM
    I have recently bought Cisco Valet Plus (M20) wireless router (which I recognize now was a mistake, but nevermind). It has two setup options - Cisco Connect software and web-based setup. Cisco Connect software allows changing very small set of settings, web-based setup allows access to almost all settings, except settings for guest network. The problem is that when I use web-based setup, Cisco Connect after some changes refuses to talk to the router, so I can't change guest settings anymore (since web interface doesn't allow to change them). It must be because of some config parameter not matching or some password set wrong - but I don't know where Cisco Connect stores them. So, does anybody have any idea how to make Cisco Connect talk to the router again once I changed the settings through the web interface?

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  • networking fails when DNS servers are specified manualy

    - by Matthew Scouten
    When I let Windows-7 use DHCP to find its own DNS server, everything works fine. Then I use ipconfig to get the IPs of the DNS servers in question, and specify them manually. Now the network stops working. (I need to do this because my next step is to restore the router that is going to lie about the proper DNS server. Don't ask why, it is required by my father's work. The IT there are not exactly on the ball.) Why would this make a difference? It is the same set of servers, just obtained differently.

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  • Just installed 13.04 and everything is fine except I cannot connect to the internet. Any thoughts?

    - by razorccatu
    I just installed Ubuntu 13.04 on my HP G62 laptop and the install went smoothly. I did the install off of a USB drive after trying ubuntu. While I was testing it, I connected to my Wireless with out issue and surfed a little. After the install, no wireless. I can still connect to my wireless network (at least it tells me I'm connected at full strength) but No servers can be found. I attempted to ping Google to no avail and I attempted to ping my router to no avail. I tried to then hard wire the machine and once again it told me that I was connected but I was not. When I ran dmesg, I got the following message: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolvabe. Please install nss-hostname! Is the hostname the issue? if so, how do I resolve it with out internet connection? If it's not the issue, how do I move forward? Thanks for any help. EDIT. I forgot to attach the image of my ifconfig if that might help.

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  • Standard ratio of cookies to "visitors"?

    - by Jeff Atwood
    As noted in a recent blog post, We see a large discrepancy between Google Analytics "visitors" and Quantcast "visitors". Also, for reasons we have never figured out, Google Analytics just gets larger numbers than Quantcast. Right now GA is showing more visitors (15 million) on stackoverflow.com alone than Quantcast sees on the whole network (14 million): Why? I don’t know. Either Google Analytics loses cookies sometimes, or Quantcast misses visitors. Counting is an inexact science. We think this is because Quantcast uses a more conservative ratio of cookies-to-visitors. Whereas Google Analytics might consider every cookie a "visitor", Quantcast will only consider every 1.24 cookies a "visitor". This makes sense to me, as people may access our sites from multiple computers, multiple browsers, etcetera. I have two closely related questions: Is there an accepted standard ratio of cookies to visitors? This is obviously an inexact science, but is there any emerging rule of thumb? Is there any more accurate way to count "visitors" to a website other than relying on browser cookies? Or is this just always going to be kind of a best-effort estimation crapshoot no matter how you measure it?

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  • What types of programming contest problems are there?

    - by Alex
    Basically, I want to make a great reference for use with programming contests that would have all of the algorithms that I can put together that I would need during a contest as well as sample useage for the code. I'm planning on making this into a sort of book that I could print off and take with me to competitions. I would like to do this rather than simply bringing other books (such as Algorithms books) because I think that I will learn a lot more by going over all of the algorithms myself as well as I would know exactly what I have in the book, making it more efficient to have and use. So, I've been doing research to determine what types of programming problems and algorithms are common on contests, and the only thing I can really find is this (which I have seen referenced a few times): Hal Burch conducted an analysis over spring break of 1999 and made an amazing discovery: there are only 16 types of programming contest problems! Furthermore, the top several comprise almost 80% of the problems seen at the IOI. Here they are: Dynamic Programming Greedy Complete Search Flood Fill Shortest Path Recursive Search Techniques Minimum Spanning Tree Knapsack Computational Geometry Network Flow Eulerian Path Two-Dimensional Convex Hull BigNums Heuristic Search Approximate Search Ad Hoc Problems The most challenging problems are Combination Problems which involve a loop (combinations, subsets, etc.) around one of the above algorithms - or even a loop of one algorithm with another inside it. These seem extraordinarily tricky to get right, even though conceptually they are ``obvious''. Now that's good and all, but that study was conducted in 1999, which was 13 years ago! One thing I know is that there are no BigNums problems any more (as Java has a BigInteger class, they have stopped making those problems). So, I'm wondering if anyone knows of any more recent studies of the types of problems that may be seen in a programming contest? Or what the most helpful algorithms on contests would be?

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  • SHH Tunnel for Remote Desktop via Intermediary Server

    - by Mihai Todor
    I've seen many examples of SSH tunnels on the nets, but I'm still having no luck with this. Here's the setup: Windows 7 PC in a private network, sitting behind a firewall, with PowerShellInsider SSH server set up and working fine. Public access Linux server, which has access to the PC. Windows 7 laptop, at home, from which I wish to do remote desktop on the PC. Now, here's what I've tried so far: SSH tunnel from my laptop to the Linux server: ssh -f my_user@LINUX_SERVER -L 6666:LINUX_SERVER_IP:6666 -N SSH to the Linux server where I've set up a tunnel to the PC: ssh -f 'PRIVATE_DOMAIN\my_user'@PC_NAME -L 6666:PC_IP:3389 -N Unfortunately, I must be doing something wrong, because it doesn't seem to work. Any ideas why or, at least, any suggestions on how can I try to debug this setup? At the moment, I have access to all 3 machines (non-root on Linux), so I can test whatever I want...

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  • Why can't I access a particular website even though the server appears to be available

    - by 50ndr33
    I can't access http://www.lynda.com/ with any of my browsers on my home network. By checking http://www.downforeveryoneorjustme.com/, I can see that the server is up and I can access it via a proxy like TOR. This screen appears immediately after I type the page in It doesn't even try to load the page, it seems. Though when I ping the server I get this: I tried to do ipconfig /flushdns. But it didn't help either. Anyone know how to fix this?

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  • What configuration management solutions exist in a non-networked environment?

    - by Rob Spieldenner
    My servers exist in an environment without outside network connectivity (this is a requirement), so when I deploy updates all packages, binaries, config files, etc. must be included on the delivered media. And of course I want some sort of configuration management so I can tell what has and hasn't been installed. So I was wondering if people had experience with chef, puppet, or another configuration management type tool for dealing with this type of environment. Worst case I deploy my updates as an RPM. EDIT: My setup has both Linux servers and Windows servers.

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  • Why does 1GBit card have output limited to 80 MiB ?

    - by Gallus
    I'm trying to utilize maximal bandwidth provided by my 1GiB network card, but it's always limited to 80MiB (real megabytes). What can be the reason? Card description (lshw output): description: Ethernet interface product: DGE-530T Gigabit Ethernet Adapter (rev 11) vendor: D-Link System Inc physical id: 0 bus info: pci@0000:03:00.0 logical name: eth1 version: 11 serial: 00:22:b0:68:70:41 size: 1GB/s capacity: 1GB/s width: 32 bits clock: 66MHz capabilities: pm vpd bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation The card is placed in following PCI slot: *-pci:2 description: PCI bridge product: 82801 PCI Bridge vendor: Intel Corporation physical id: 1e bus info: pci@0000:00:1e.0 version: 92 width: 32 bits clock: 33MHz capabilities: pci subtractive_decode bus_master cap_list The PCI isn't any PCI Express right? It's a legacy PCI slot? So maybe this is the reason? OS is a linux.

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  • Wired and wireless conections: force Windows to connect to laptop through Ethernet?

    - by danielkza
    I have a desktop connected to the internet and to my home network through Wi-Fi, and a latptop connected to said desktop through an Ethernet cable. But Windows seems to only reach the laptop through Wi-Fi: I want to transfer files through the wired connection instead. Setting up Internet Connectin Sharing and disconnecting the laptop from Wi-Fi altogether doesn't seem like the most elegant solution to me. I also thought about going to the hosts file and setting up the IP address manually, but that would make the laptop completely unavailable if it's not wired, which happens quite often unfortunately. Is there any way for me to tell Windows to use the wired connection for a particular host if possible, and fallback to any other route it finds otherwise?

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  • Domino 8.5.3: Modify Subject of Incoming Email

    - by Void
    I am a newbie in managing and development for Domino. Recently, I have request from other teams at work to set up a filter or agent for incoming mail. This is the requirement for the request: Look for Incoming Mail addressed to #CRITICAL (mutlipurpose, internal group containing a list of engineers) For mail matching Point 1, append "For Immediate Action: " to the front of the Subject Some restrictions I have: Only the Domino server is under my charge, not to touch on network-side or other servers No 3rd party software to be installed I have gone through the configurations in the Domino server and the closest thing I have to filtering Email is the Router/SMTP Restrictions... Rules. But this is not able to fulfill Point 2 in any way. Is this even possible using just Domino server settings, or through agents?

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