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  • how does a computer know which IP address will route information to the internet? [closed]

    - by JohnMerlino
    Possible Duplicate: How does IPv4 Subnetting Work? For example, I have a computer with a Network Inteface Card (NIC) which is an Ethernet card that is connected by Ethernet cables to a router. There is also another computer with a cable that is connected in another port of the router. This is a Belkin router operating over an Ethernet in the LAN. When I connect to serverfault.com, it maps to an IP address. My computer now has a task of connecting to that IP address. But my computer itself cannot connect to the serverfault IP address. Only the router can. So the task of my computer is to find the IP address associated with the node that will do the routing to the public internet. How does my computer know that a particular IP address in the local network belongs to the router, and is not another computer connected to the network? Is this information configured manually in the operating system itself? Somehow my computer must know that it must send ethernet frames to the router with the expectation that the router will then send the packet to a public IP. How does it know to send it to the router? Is the router's ip address stored in my computer like a key/value pair e.g. "router"="192.168.2.6", so that when I put a public ip address, my computer first knows to connect to 192.168.2.6?

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  • Setting up dual wireless routers

    - by JasCav
    I have two wireless routers (one is the router supplied by Verizon - MI424-WR ActionTek and the other is DD-WRT Buffalo router). I want to set them up so that I have the second router (Buffalo) on its own subnet and two SSIDs so I can put different devices on different routers and so I can put my web server on the first router and put most of my other computers behind the second router for a little extra protection in case of a compromise. From my understanding, I have to hook the two routers together so that the LAN from the Verizon router plugs into the WAN port of the Buffalo router. This is where I get stuck. What settings do I need to look for to setup the Buffalo on its own subnet? Do I need to do anything with the Verizon router, or are the configuration changes done to the Buffalo?

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  • CherryPy configuration tools.staticdir.root problem

    - by Alan Harris-Reid
    Hi there, How can I make my static-file root directories relative to my application root folder (instead of a hard-coded path)? In accordance with CP instructions (http://www.cherrypy.org/wiki/StaticContent) I have tried the following in my configuration file: tree.cpapp = cherrypy.Application(cpapp.Root()) tools.staticdir.root = cpapp.current_dir but when I run cherrpy.quickstart(rootclass, script_name='/', config=config_file) I get the following error builtins.ValueError: ("Config error in section: 'global', option: 'tree.cpapp', value: 'cherrypy.Application(cpapp.Root())'. Config values must be valid Python.", 'TypeError', ("unrepr could not resolve the name 'cpapp'",)) I know I can do configuration from within the main.py file just before quickstart is called (eg. using os.path.abspath(os.path.dirname(file))), but I prefer using the idea of a separate configuration file if possible. Any help would be appreciated (in case it is relevant, I am using CP 3.2 with Python 3.1) TIA Alan

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  • Your experience on using configuration & VCS tools

    - by smalldream
    I am doing my study's final year project and would like to do a little survey here. The topic is about configuration management and version control system for an industrial product (such as a piece of software, a furniture design, a car engine or even an aeroplane design etc...) 1.) What is you field of expertise (IT, engineering, manufactuing etc..) and what is the configuration management and version control system you use (previously or now) for your work? 2.) What is your opinion/comment (good, bad, what is it lack of or what can be improve etc...) about them? Much appreciated if you can include some real life examples for your opinion/comment. Of course you are welcome also if you simply wish to share your thought on the current configuration management and version control system in market. Thanks all in advance for your help.

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  • Programmatically change .net configuration at runtime?

    - by fretje
    Is there a way to programmatically enable diagnostic tracing for a WSE web service client? This is how it should be configured using an app.config file: <?xml version="1.0" encoding="utf-8"?> <configuration> <configSections> <section name="microsoft.web.services3" type="Microsoft.Web.Services3.Configuration.WebServicesConfiguration, Microsoft.Web.Services3, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> </configSections> <microsoft.web.services3> <diagnostics> <trace enabled="true" input="InputTrace.webinfo" output="OutputTrace.webinfo" /> </diagnostics> </microsoft.web.services3> </configuration> I would like to do this from code. Is this possible?

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  • asp.net Configuration Error on host

    - by zey
    I uploaded my asp.net site to hosting site , and my site browse correctly . But when I go to login url , it's show me the error Configuration Error Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. Parser Error Message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS. Source Error: Line 23: </assemblies> Line 24: </compilation> Line 25: <authentication mode="Forms"> Line 26: <forms loginUrl="~/Account/Login.aspx" timeout="2880" /> Line 27: </authentication> How can I fix it ?

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  • Generics in custom configuration sections

    - by Jonn
    I tried making a custom configuration class that went on like this: WatcherServiceInfoSection<TWatcherServiceDetailElement> where TWatcherServiceDetailElement is a ConfigurationElement inside it. Now when I call the type in the ConfigSections area of AppConfig I get the error: An error occurred creating the configuration section handler for WatcherServiceInfo: Could not load type 'Library.Common.Utilities.ConfigurationHandler.WatcherServiceInfoSection<ASNDPService.Configuration.WatcherServiceDetailElement>' from assembly Is what I'm doing possible? Can I have generic types in the type attribute for a custom section element? EDIT Additionally, how about ConfigurationElementCollection objects? Like in the above example, how could I do a [ConfigurationProperty("WatcherServiceDetails", IsRequired = true, IsDefaultCollection = true)] [ConfigurationCollection(typeof(TWatcherServiceDetailElement), AddItemName = "WatcherServiceDetail")] public WatcherServiceDetailCollection<TWatcherServiceDetailElement> WatcherServiceDetails I'm aware that type parameters aren't allowed for attributes and that's what I want to know how to do.

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  • configuration in IOS MDM

    - by PhuongMaruko
    I'm reading some docs about MDM. According to "Moile device management protocol" document, server can set config for managed devices by installing profile files onto devices. Things that can config in that file are described in https://developer.apple.com/library/ios/featuredarticles/iphoneconfigurationprofileref/Introduction/Introduction.html. My Questions are: if server install 2 profiles that have different config for the same thing, what will happen? "Moile device management protocol" documents also mention about "Managed App Configuration and Feedback". So what is different between the previous config file with this function of server. Is "Managed App Configuration and Feedback" just for specific app, not for the whole device as profile files. which fields can be config via "Managed App Configuration and Feedback" of MDM? Thank all!

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  • Official definition of CSCI (Computer Software Configuration Item)

    - by Andreas_D
    I'm looking for the most official definition of CSCI / Configuration Item - not just what it is but what we have to deliver / can expect when a contract defines subsystems which shall be developed as configuration items. I spend some time with my famous search tool and found a lot of explanations for CSCI (wikipedia, acronym directories, ...) but I haven't found a standard or a pointer to a standard (like ISO-xxx) yet which tells (1) what it is and (2) what has to be done from a QM/CM point of view. I just ask, because a contractors QM representative stated during an acceptance test, that CI only requires to not forget the CI in the configuration plan and to assign a serial number ... I expected to see some SRS, SDD, ICD, SVD, SIP, ... documents and acceptance test documentation for those subsystems...

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  • Python configuration file generator

    - by Stan
    I want to use Python to make a configuration file generator. My roughly idea is feeding input with template files and some XML files with the real settings. Then use the program to generate the real configuration files. I got several questions: Is there any open source configuration generator program? (what could be the keyword), I wonder if there's anything can be added/modified in the design. Does Python have good XML parser module? Is it good idea to use XML file to save the original settings? I've been thinking to use Excel since it's more intuitive to maintain, but harder for program to parse. Not sure how people deal with this. Hope the community can give me some suggestions. Thanks a lot!

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  • Hamachi² configuration file... Where is it?

    - by Cinaed666
    I recently installed hamachi² and haguichi on my 10.10 machine. It works, but it loses its connection every few minutes and I have to reconnect. I looked into this, and apparently I need to set the KeepAlive in the configuration file to 100. This shouldn't be a hard task, so I looked for the hamachi directory. I checked the obvious place: /home/username/.hamachi ... but this directory doesn't exist. (Yes, I did enable hidden files.) After doing a file search for hamachi, it returned nothing either. I'm in the dark here, what am I missing?

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  • How to fix an endpoint/configuration error using WCF in VB.NET

    - by Eric
    I'm working with a small web page that is meant to assist the users of my application. This web page takes a file and sends it to a central server, which then does something with the data and returns a result. I created this application some time ago and am coming back to it recently. I am getting some kind of configuration error right now, although this application used to work. When it stopped working, whenever I ran the page and sent the data to the central server, I would get this error: "Could not find default endpoint element that references contract 'CentralService.ICwCentralService' in the ServiceModel client configuration section. This might be because no configuration file was found for your application, or because no endpoint element matching this contract could be found in the client element." Looking at some other issues on the net, I thought I might have had the answer. The service reference to the endpoint was contained in a separate project from the code that called it, but the configuration file in that project had no information about the endpoint. So, I added these entries to the web.config file in the main project: <system.serviceModel> <bindings> <wsHttpBinding> <binding name="wsHttpEndpoint" closeTimeout="00:01:00" openTimeout="00:0:10" receiveTimeout="01:10:00" sendTimeout="01:01:00" bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="999999999" maxReceivedMessageSize="999999999" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false"> <readerQuotas maxDepth="999999999" maxStringContentLength="999999999" maxArrayLength="999999999" maxBytesPerRead="999999999" maxNameTableCharCount="999999999" /> <reliableSession ordered="true" inactivityTimeout="01:10:00" enabled="false" /> <security mode="Message"> <transport clientCredentialType="Windows" proxyCredentialType="None" realm="" /> <message clientCredentialType="Windows" negotiateServiceCredential="true" algorithmSuite="Default" establishSecurityContext="true" /> </security> </binding> </wsHttpBinding> </bindings> <client> <endpoint address="http://localhost:22269/CwCentralService.svc" binding="wsHttpBinding" bindingConfiguration="wsHttpEndpoint" contract="CentralService.ICwCentralService" name="wsHttpEndpoint"> <identity> <servicePrincipalName /> </identity> </endpoint> </client> </system.serviceModel> Now, if I run it, I'm still getting an error: "The remote server returned an unexpected response: (400) Bad Request." The strange thing is, though, I took those entries from another project that contacts the central server. That application has no problems contacting the central server using these settings. It's not a web page application, but I don't see how that would require these settings to change. I cannot tell what started causing these errors or when. I assume its something that changed outside of the application (e.g. the libraries referenced) that requires an update to the configuration in the application. I am currently using .NET 3.0 for all of my applications. Any help would be appreciated.

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  • Weird SSIS Configuration Error

    - by Christopher House
    I ran into an interesting SSIS issue that I thought I'd share in hopes that it may save someone from bruising their head after repeatedly banging it on the desk like I did.  I was trying to setup what I believe is referred to as "indirect configuration" in SSIS.  This is where you store your configuration in some repository like a database or a file, then store the location of that repository in an environment variable and use that to configure the connection to your configuration repository.  In my specific situation, I was using a SQL database.  I had this all working, but for reasons I'll not bore you with, I had to move my SSIS development to a new VM last week.  When I got my new VM, I set about creating a new package.  I finished up development on the package and started setting up configuration.  I created an OLE DB connection that pointed to my configuration table then went through the configuration wizard to have the connection string for this connection set through my environment variable.  I then went through the wizard to set another property through a value stored in the configuration table.  When I got to the point where you select the connection, my connection wasn't in the list: As you can see in the screen capture above, the ConfigurationDb connection isn't in the list of available SQL connections in the configuration wizard.  Strange.  I canceled out of the wizard, went to the properties for ConfigurationDb, tested the connection and it was successful.  I went back to the wizard again and this time ConfigurationDb was there.  I completed the wizard then went to test my package.  Unfortunately the package wouldn't run, I got the following error: Unfortunately, googling for this error code didn't help much as none of the results appears related to package configuration.  I did notice that when I went back through the package configuration and tried to edit a previously saved config entry,  I was getting the following error: I checked the connection string I had stored in my environment variable and noticed that indeed, it did not have a provider name.  I didn't recall having included one on my previous VM, but I figured I'd include it just to see what happened.  That made no difference at all.  After a day and a half of trying to figure out what the problem was, I'm pleased to report that through extensive trial and error, I have resolved the error. As it turns out, the person who setup this new VM for me named the server SQLSERVER2008.  This meant my configuration connection string was: Initial Catalog=SSISConfigDb;Data Source=SQLSERVER2008;Integrated Security=SSPI; Just for the heck of it, I tried changing it to: Initial Catalog=SSISConfigDb;Data Source=(local);Integrated Security=SSPI; That did the trick!  As soon as I restarted BIDS, I was able to run the package with no errors at all.  Crazy.  So, the moral of the story is, don't name your server SQLSERVER2008 if you want SSIS configuration to work when using SQL as your config store.

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  • PHP: A config file in .ini or .php format?

    - by Tim Visee
    I'm working on a huge CMS system, and I asked myself what configuration format I should use. There are two common formats for configuration files. The first one is an INI file, containg all the configuration properties. Then you can simply parse this INI file using build in PHP functions. A second option is to use a PHP file containing a regular PHP array with these configuration properties. Now, it's easier to edit an INI file, but a PHP file give's you more options, for example it allows you to add a function which retrieves one of the configuration options while reading the configuration file. Note: The PHP configuration file would only contain an array of configuration, no initialization functions or anything. (This is possible of course, but it's not implemented by default) Now, what is recommend for me to use as configuration file? What is the most common format for a configuration file? Should I go for simplicity with the INI files, or with a more dynamic one using PHP. One thing to note, this is not for personal usage. I'm planning to release the CMS system soon, and a lot of websites are scheduled already to change to my CMS system.

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  • How to override PHP configuration when running in CGI mode

    - by Fitrah M
    There are some tutorials out there telling me how to override PHP configuration when it is running in CGI mode. But I'm still confused because lots of them assume that the server is running on Linux. While I need to do that also in Windows. My hosting is indeed using Linux but my local development computer is using Windows XP with Xampp 1.7.3. So I need to do that in my local computer first, then I want to change the configuration on hosting server. The PHP in my hosting server is already run as CGI while in my local computer still run as Apache module. At this point, the processes that I understand are: Change PHP to work in CGI mode. I did this by commenting these two line in "httpd-xampp.conf": # LoadFile "C:/xampp/php/php5ts.dll" # LoadModule php5_module modules/php5apache2_2.dll Create "cgi-bin" directory in DocumentRoot. My DocumentRoot is in "D:\www\" (I'm using apache with virtual host). So it is now "D:\www\cgi-bin". Change the default "cgi-bin" directory settings from "C:/xampp/cgi-bin/" to "D:\www\cgi-bin": ScriptAlias /cgi-bin/ "D:/www/cgi-bin/" <Directory "D:\www\cgi-bin"> Options MultiViews Indexes SymLinksIfOwnerMatch Includes ExecCGI AllowOverride All Allow from All </Directory> At this point, my PHP is now running as CGI. I checked this with phpinfo(). It tells me that Server API is now CGI/FastCGI. Now I want to override php configuration. I copied 'php.ini' file to "D:\www\cgi-bin" and modify upload_max_filesize setting from 128M to 10M. Create 'php.cgi' file in "D:\www\cgi-bin" and put these code inside the file: #!/bin/sh /usr/local/cpanel/cgi-sys/php5 -c /home/user/public_html/cgi-bin/ That's it. I'm stuck at this point. All of tutorials tell me to create 'php.cgi' file and put shell code inside the file. How to do the 6th step on Windows? I know the next step is to create handler in .htaccess file to load that 'php.cgi'. And also, because I will also need to change PHP configuration on my hosting server (Linux), is the 6th step above right? Some tutorial tells to insert these line instead of above: #!/bin/sh export PHPRC=/site/ini/1 exec /cgi-bin/php5.cgi I'm sorry if my question is not clear. I'm a new member and this is my first question in this site. Thank you.

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  • PHP: optimum configuration storage ?

    - by Jerome WAGNER
    Hello, My application gets configured via a lot of key/values (let's say 30.000 for instance) I want to find the best deployment method for these configurations, knowing that I want to avoid DEFINEs to allow for runtime re-configuration. I have thought of - pre-compiling them into an array via a php file - pre-compiling them into a tmpfs sqlite database - pre-compiling them into a memcached db what are my options for the best random access time to these configuration (memory is not an issue) ? Thanks Jerome

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  • API for parse/update UNIX configuration files

    - by Chen Levy
    Unix configuration files come in all shapes and forms. I know that Webmin has a Perl API that makes it easy to parse and modify most common configuration pro grammatically, while preserving changes that might have been made by hand. Are there any other libraries that has similar functionality, perhaps for other languages (Python, Ruby, C, C++, etc)?

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  • Application configuration save to file or object serialization

    - by Venno
    Hi, I am working on a project and I need to save user configuration. The configuration is a set of Jchechboxes I need to store their state (true, false). Which do you think is the better way of saving it, in a file and if yes in what (ini, cfg, txt), or it is better to serialize the object with the states?? Or if there is another way, please tell me :) Cheers

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  • Multi Process Configuration

    - by user200937
    Hi, I have a product built out of multiple processes. Each process uses internally commons configuration. Does anyone have an idea how to manage the config? I.e. we do not want to duplicate variables so each process will be able to read them. Additionally, DB solution is no good, as we do not want to be dependent on DB for something like configuration. Thanks Yair

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  • Java configuration framework

    - by Steen
    I'm in the process of weeding out all hardcoded values in a java library and was wondering what framework would be the best (in terms of zero- or close-to-zero configuration) to handle run-time configuration? I would prefer xml-based config-files, but it's not essential. Please do only reply if you have practical experience with a framework. I'm not looking for examples, but experience... Thanks for taking the time.

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  • 'Locale' configuration and its relationship with Windows API

    - by The Kaykay
    Can the locale configuration of a system OR the keyboard type configuration of that system in anyway affect which API is called at the Kernel level? To be specific, if a program is invoking 'CreateFile()' API then the windows API documentation says that the call gets delegated to either CreateFileA or CreateFileW. If that program is being run on a system present in China with a Chinese Keyboard then which of the two functions will be called?

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  • Backup configuration of Hudson Master systems

    - by Praveen
    I need Backup configuration of Hudson Master systems Detailed information If a Hudson Master system goes down, we need to be able to bring it back up on a different VM as soon as possible (may be 3 hours). Therefore, I need to develop a way to backup the configuration and resetup a new VM reliabily. can any body let me know best way step by step. THANKS

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  • Configuration manipulation over all Visual Studio projects

    - by rodnower
    Hello, some one know how can I manipulate on some configuration over all projects in solution? For example, I create new configuration "Releas64" that means: "No debug, 64 bit, all files goes to c:\binaries", but I need to go over all 30 projects in our solution for to set those settings for every project. Is there some tool? Thank you for ahead.

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