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  • How to Implement Single Sign-On between Websites

    - by hmloo
    Introduction Single sign-on (SSO) is a way to control access to multiple related but independent systems, a user only needs to log in once and gains access to all other systems. a lot of commercial systems that provide Single sign-on solution and you can also choose some open source solutions like Opensso, CAS etc. both of them use centralized authentication and provide more robust authentication mechanism, but if each system has its own authentication mechanism, how do we provide a seamless transition between them. Here I will show you the case. How it Works The method we’ll use is based on a secret key shared between the sites. Origin site has a method to build up a hashed authentication token with some other parameters and redirect the user to the target site. variables Status Description ssoEncode required hash(ssoSharedSecret + , + ssoTime + , + ssoUserName) ssoTime required timestamp with format YYYYMMDDHHMMSS used to prevent playback attacks ssoUserName required unique username; required when a user is logged in Note : The variables will be sent via POST for security reasons Building a Single Sign-On Solution Origin Site has function to 1. Create the URL for your Request. 2. Generate required authentication parameters 3. Redirect to target site. using System; using System.Web.Security; using System.Text; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { string postbackUrl = "http://www.targetsite.com/sso.aspx"; string ssoTime = DateTime.Now.ToString("yyyyMMddHHmmss"); string ssoUserName = User.Identity.Name; string ssoSharedSecret = "58ag;ai76"; // get this from config or similar string ssoHash = FormsAuthentication.HashPasswordForStoringInConfigFile(string.Format("{0},{1},{2}", ssoSharedSecret, ssoTime, ssoUserName), "md5"); string value = string.Format("{0}:{1},{2}", ssoHash,ssoTime, ssoUserName); Response.Clear(); StringBuilder sb = new StringBuilder(); sb.Append("<html>"); sb.AppendFormat(@"<body onload='document.forms[""form""].submit()'>"); sb.AppendFormat("<form name='form' action='{0}' method='post'>", postbackUrl); sb.AppendFormat("<input type='hidden' name='t' value='{0}'>", value); sb.Append("</form>"); sb.Append("</body>"); sb.Append("</html>"); Response.Write(sb.ToString()); Response.End(); } } Target Site has function to 1. Get authentication parameters. 2. Validate the parameters with shared secret. 3. If the user is valid, then do authenticate and redirect to target page. 4. If the user is invalid, then show errors and return. using System; using System.Web.Security; using System.Text; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { if (User.Identity.IsAuthenticated) { Response.Redirect("~/Default.aspx"); } } if (Request.Params.Get("t") != null) { string ticket = Request.Params.Get("t"); char[] delimiters = new char[] { ':', ',' }; string[] ssoVariable = ticket.Split(delimiters, StringSplitOptions.None); string ssoHash = ssoVariable[0]; string ssoTime = ssoVariable[1]; string ssoUserName = ssoVariable[2]; DateTime appTime = DateTime.MinValue; int offsetTime = 60; // get this from config or similar try { appTime = DateTime.ParseExact(ssoTime, "yyyyMMddHHmmss", null); } catch { //show error return; } if (Math.Abs(appTime.Subtract(DateTime.Now).TotalSeconds) > offsetTime) { //show error return; } bool isValid = false; string ssoSharedSecret = "58ag;ai76"; // get this from config or similar string hash = FormsAuthentication.HashPasswordForStoringInConfigFile(string.Format("{0},{1},{2}", ssoSharedSecret, ssoTime, ssoUserName), "md5"); if (string.Compare(ssoHash, hash, true) == 0) { if (Math.Abs(appTime.Subtract(DateTime.Now).TotalSeconds) > offsetTime) { //show error return; } else { isValid = true; } } if (isValid) { //Do authenticate; } else { //show error return; } } else { //show error } } } Summary This is a very simple and basic SSO solution, and its main advantage is its simplicity, only needs to add a single page to do SSO authentication, do not need to modify the existing system infrastructure.

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  • Authentication for users on a Single Page App?

    - by John H
    I have developed a single page app prototype that is using Backbone on the front end and going to consume from a thin RESTful API on the server for it's data. Coming from heavy server side application development (php and python), I have really enjoyed the new different design approach with a thick client side MVC but am confused on how best to restrict the app to authenticated users who log in. I prefer to have the app itself behind a login and would also like to implement other types of logins eventually (openid, fb connect, etc) in addition to the site's native login. I am unclear how this is done and have been searching - but unsuccessful in finding information that made it clear to me. In the big picture, what is the current best practice for registering users and requiring them to login to use your single page app? Once a user is logged in, how are the api requests authenticated? Can I store a session but how do I detect for this session in the API calls? Any answers to this would be much appreciated!

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  • Single responsibility principle - am I overusing it?

    - by Tarun
    For reference - http://en.wikipedia.org/wiki/Single_responsibility_principle I have a test scenario where in one module of application is responsible for creating ledger entries. There are three basic tasks which could be carried out - View existing ledger entries in table format. Create new ledger entry using create button. Click on a ledger entry in the table (mentioned in first pointer) and view its details in next page. You could nullify a ledger entry in this page. (There are couple more operation/validations in each page but fore sake of brevity I will limit it to these) So I decided to create three different classes - LedgerLandingPage CreateNewLedgerEntryPage ViewLedgerEntryPage These classes offer the services which could be carried out in those pages and Selenium tests use these classes to bring application to a state where I could make certain assertion. When I was having it reviewed with on of my colleague then he was over whelmed and asked me to make one single class for all. Though I yet feel my design is much clean I am doubtful if I am overusing Single Responsibility principle

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  • Clarify the Single Responsibility Principle.

    - by dsimcha
    The Single Responsibility Principle states that a class should do one and only one thing. Some cases are pretty clear cut. Others, though, are difficult because what looks like "one thing" when viewed at a given level of abstraction may be multiple things when viewed at a lower level. I also fear that if the Single Responsibility Principle is honored at the lower levels, excessively decoupled, verbose ravioli code, where more lines are spent creating tiny classes for everything and plumbing information around than actually solving the problem at hand, can result. How would you describe what "one thing" means? What are some concrete signs that a class really does more than "one thing"?

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  • Cocos2d: Using single timer/scheduler for multiple sprites

    - by Shailesh_ios
    want to know if is it possible to use single timer or scheduler method for multiple sprites ? Like I am now working on a game and there could be any number of sprites and i want to perform some actions on all of that sprites, So do I have to use as many timers or schedulers as sprites ? Or How can the job be done using only a single timer or scheduler ? What is I schedule a method and use it for, Say 10 sprites ? Will it affect the performance..?

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  • How to improve a single-paged site search result [closed]

    - by Trisism
    Possible Duplicate: How to SEO a Single-Page website I created an online CV of mine a couple of weeks ago and it has had quite a few visits. Now I want to improve the chance it will appear in google search results; however, my web CV is a one-paged site and it contains only internal links (those with hash #) so I can't really submit a sitemap. I could have changed the internal links to normal links to be processed on server-side, but there's no point of doing so. I'm very new to web SEO so I would really appreciate if somebody can show me what should I do with a single-paged site with internal links to be effectively indexed by crawlers.

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  • Object array updates one instance repeatedly [on hold]

    - by MGN001
    I'm making a 2D shooter, and the player object holds an array of bullets that represent how many shots the player can have on screen at once. At least, this is what I'm trying for. What's happening is that each time any of the objects in the array is called, it seems to update a single object in memory. So, if I fire and then fire again, the object "starts over" from where I shot from and moves twice as fast. I've spent weeks trying to fix this and I've managed nothing. Hopefully another pair of eyes will see something I've missed. Player.cpp #include "Player.h" const int startLives = 3; const int maxHealth = 2; const float speed = 1; const int maxVelocity = 500; const int topBound = WINDOW_HEIGHT / 5 * 3; const int slowRate = 500; const int accRate = 1000; const int maxBullets = 5; const float spriteWidth = 99; const float spriteHeight = 75; const Vector2f startPosition = { (WINDOW_WIDTH / 2) - (spriteWidth / 2), (WINDOW_HEIGHT / 4 * 3) - (spriteHeight / 2) }; Bullet bullets[maxBullets]; Bullet * bulletPointers[maxBullets]; SDL_Texture * playerHealthy; SDL_Texture * playerDamaged; SDL_Texture * currentSprite; SDL_Rect * rect; Vector2f position; Vector2f velocity; int Health; int Lives; Player::Player() { rect = new SDL_Rect(); } Player::~Player() { SDL_DestroyTexture(playerHealthy); SDL_DestroyTexture(playerDamaged); SDL_DestroyTexture(currentSprite); rect = NULL; } void Player::Initialize(SDL_Renderer * renderer) { SDL_Surface * temp; temp = IMG_Load(".\\Sprites\\player.png"); if (temp == NULL) { printf("Initialization Error: %s\n", IMG_GetError()); exit(PLAYER_INITIALIZATION_ERROR); } playerHealthy = SDL_CreateTextureFromSurface(renderer, temp); temp = IMG_Load(".\\Sprites\\playerDamaged.png"); if (temp == NULL) { printf("Initialization Error: %s\n", IMG_GetError()); exit(PLAYER_INITIALIZATION_ERROR); } playerDamaged = SDL_CreateTextureFromSurface(renderer, temp); temp = IMG_Load(".\\Sprites\\laserGreen.png"); if (temp == NULL) { printf("Initialization Error: %s\n", IMG_GetError()); exit(PLAYER_INITIALIZATION_ERROR); } SDL_Texture * bullet = SDL_CreateTextureFromSurface(renderer, temp); temp = IMG_Load(".\\Sprites\\laserGreenShot.png"); if (temp == NULL) { printf("Initialization Error: %s\n", IMG_GetError()); exit(PLAYER_INITIALIZATION_ERROR); } SDL_Texture * explosion = SDL_CreateTextureFromSurface(renderer, temp); for (int i = 0; i < maxBullets; i++) { bullets[i].Initialize(renderer, bullet, explosion); bulletPointers[i] = NULL; } temp = NULL; rect->h = spriteHeight; rect->w = spriteWidth; Reset(); } void Player::Update(Input input, float deltaTime) { if (abs(velocity.x) < slowRate * deltaTime) { velocity.x = 0; } else if (velocity.x > 0) { velocity.x -= slowRate * deltaTime; } else if (velocity.x < 0) { velocity.x += slowRate * deltaTime; } if (abs(velocity.y) < slowRate * deltaTime) { velocity.y = 0; } if (velocity.y > 0) { velocity.y -= slowRate * deltaTime; } else if (velocity.y < 0) { velocity.y += slowRate * deltaTime; } if (Health <= 0) { --Lives; Spawn(); } velocity.x += UnitVector(input.InputNew.movement).x * accRate * deltaTime; velocity.y += UnitVector(input.InputNew.movement).y * accRate * deltaTime; if (Magnitude(velocity) > maxVelocity) { velocity.x = UnitVector(velocity).x * maxVelocity; velocity.y = UnitVector(velocity).y * maxVelocity; } position.x += velocity.x * deltaTime * speed; position.y += velocity.y * deltaTime * speed; if (input.InputNew.JumpLeft && !input.InputOld.JumpLeft) { position.x -= spriteWidth; } if (input.InputNew.JumpRight && !input.InputOld.JumpRight) { position.x += spriteWidth; } Boundaries(); rect->x = position.x; rect->y = position.y; if (input.InputNew.Fire && !input.InputOld.Fire) { Fire(); } for (int i = 0; i < maxBullets; ++i) { if (bulletPointers[i] != NULL) { bullets[i].Update(deltaTime); if (bullets[i].getPosition().y < -33) { bulletPointers[i] = NULL; } } } } void Player::Draw(SDL_Renderer * renderer) { for (int i = 0; i < maxBullets; ++i) { if (bulletPointers[i] != NULL) { bullets[i].Draw(renderer); } } SDL_RenderCopy(renderer, currentSprite, NULL, rect); } void Player::Spawn() { position = startPosition; Health = maxHealth; currentSprite = playerHealthy; rect->x = position.x; rect->y = position.y; } void Player::Boundaries() { if (position.x < 0) { position.x = 0; velocity.x *= -1; } else if (position.x > WINDOW_WIDTH - spriteWidth) { position.x = WINDOW_WIDTH - spriteWidth; velocity.x *= -1; } if (position.y < topBound) { position.y = topBound; velocity.y *= -1; } else if (position.y > WINDOW_HEIGHT - spriteHeight) { position.y = WINDOW_HEIGHT - spriteHeight; velocity.y *= -1; } } int Player::getLives() { return Lives; } void Player::Reset() { Lives = startLives; Spawn(); } void Player::Fire() { for (int i = 0; i < maxBullets; ++i) { if (bulletPointers[i] == NULL) { bulletPointers[i] = &bullets[i]; bullets[i].Fire(position,velocity.x/2); break; } } } Bullet.cpp #include "Bullet.h" const int speed = 500; Vector2f bulletVelocity; float ExplosionMax = 0.5f; float ExplosionTimer; const Vector2f fireOffset = { 45.5f, 10.0f }; const Vector2f explosionOffset = { 23.5f, -27.0f }; const Vector2i bulletSize = { 9, 33 }; const Vector2i explosionSize = { 56, 54 }; Vector2f bulletPosition; SDL_Texture * bulletSprite; SDL_Texture * explosionSprite; SDL_Texture * bulletCurrentSprite; SDL_Rect * bulletRect; Bullet::Bullet() { } Bullet::~Bullet() { } void Bullet::Initialize(SDL_Renderer * renderer, SDL_Texture * bullet, SDL_Texture * explosion) { bulletSprite = bullet; explosionSprite = explosion; bulletRect = new SDL_Rect(); } void Bullet::Update(float deltaTime) { bulletPosition.y -= bulletVelocity.y * deltaTime; bulletPosition.x += bulletVelocity.x * deltaTime; bulletRect->x = static_cast<int>(bulletPosition.x); bulletRect->y = static_cast<int>(bulletPosition.y); } void Bullet::Draw(SDL_Renderer * renderer) { SDL_RenderCopy(renderer, bulletCurrentSprite, NULL, bulletRect); } void Bullet::Fire(Vector2f pos, float xSpeed) { bulletPosition.x = pos.x + fireOffset.x; bulletPosition.y = pos.y + fireOffset.y; bulletVelocity.x = xSpeed; bulletVelocity.y = speed; bulletCurrentSprite = bulletSprite; bulletRect->h = bulletSize.y; bulletRect->w = bulletSize.x; bulletRect->x = static_cast<int>(bulletPosition.x); bulletRect->y = static_cast<int>(bulletPosition.y); } Vector2f Bullet::getPosition() { return bulletPosition; } void Bullet::Hit() { bulletCurrentSprite = explosionSprite; bulletVelocity = { 0.0f, 0.0f }; ExplosionTimer = ExplosionMax; bulletPosition.x += explosionOffset.x; bulletPosition.y += explosionOffset.y; bulletRect->w = explosionSize.x; bulletRect->h = explosionSize.y; }

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  • Instance variables vs. class variables in Python

    - by deamon
    I have Python classes, of which I need only one instance at runtime, so it would be sufficient to have the attributes only once per class and not per instance. If there would be more than one instance (what won't happen), all instance should have the same configuration. I wonder which of the following options would be better or more "idiomatic" Python. Class variables: MyController(Controller): path = "something/" childs = [AController, BController] def action(request): pass Instance ariables: MyController(Controller): def __init__(self): self.path = "something/" self.childs = [AController, BController] def action(self, request): pass

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  • Sql Server 2008 - Cannot connect to local default instance

    - by Tone
    I recently rebuilt my machine to Windows 7 x64, installed Sql Server 2008 enterprise. I can connect fine to other remote instances via Management Studio (be they 2000, 2005 or 2008), but i cannot find my local default instance. I have verified that a directory was created for the default instance C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER I can connect to SQLEXPRESS instance fine I have rerun setup to ensure I have everything installed I have verified that the SQLSERVER(MSSQLSERVER) service is running I have tried brownsing for the instance and see all the others available except my local one I have tried using this for servername: TSOUTHERLANDPC\MSSQLSERVER, the first part being my local machine name My issue is not the same as this post or this post. Any ideas?

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  • Error while detecting start profile for instance with ID _u

    - by Techboy
    I am upgrading a SAP Java instance and am getting the error shown in the log below. There are not backup profile files in the profiles directory. The string _u does not exist in the default, start or instance profile for instance SCS01. Please can you suggest what the issue might be? Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.ucp.phases.AbstractPhaseType.initializexAbstractPhaseType.javax758x [Thread[main,5,main]]: Phase PREPARE/INIT/DETERMINE_PROFILES has been started. Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.ucp.phases.AbstractPhaseType.initializexAbstractPhaseType.javax759x [Thread[main,5,main]]: Phase type is com.sap.sdt.j2ee.phases.PhaseTypeDetermineProfiles. Mar 13, 2010 12:09:01 PM [Info]: ...ap.sdt.j2ee.phases.PhaseTypeDetermineProfiles.checkVariablesxPhaseTypeDetermineProfiles.javax284x [Thread[main,5,main]]: All 4 required variables exist in variable handler. Mar 13, 2010 12:09:01 PM [Info]: ....j2ee.tools.sysinfo.AbstractInfoController.updateProfileVariablexAbstractInfoController.javax302x [Thread[main,5,main]]: Parameter /J2EE/StandardSystem/DefaultProfilePath has been detected. Parameter value is \server1\SAPMNT\PI7\SYS\profile\DEFAULT.PFL. Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.j2ee.tools.sysinfo.ProfileDetector.detectInstancexProfileDetector.javax340x [Thread[main,5,main]]: Instance SCS01 with profile \server1\SAPMNT\PI7\SYS\profile\PI7_SCS01_server1, start profile \server1\SAPMNT\PI7\SYS\profile\START_SCS01_server1, and host server1 has been detected. Mar 13, 2010 12:09:01 PM [Error]: com.sap.sdt.ucp.phases.AbstractPhaseType.doExecutexAbstractPhaseType.javax862x [Thread[main,5,main]]: Exception has occurred during the execution of the phase. Mar 13, 2010 12:09:01 PM [Error]: com.sap.sdt.j2ee.tools.sysinfo.ProfileDetector.detectInstancexProfileDetector.javax297x [Thread[main,5,main]]: Error while detecting start profile for instance with ID _u. Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.ucp.phases.AbstractPhaseType.cleanupxAbstractPhaseType.javax905x [Thread[main,5,main]]: Phase PREPARE/INIT/DETERMINE_PROFILES has been completed. Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.ucp.phases.AbstractPhaseType.cleanupxAbstractPhaseType.javax906x [Thread[main,5,main]]: Start time: 2010/03/13 12:09:01. Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.ucp.phases.AbstractPhaseType.cleanupxAbstractPhaseType.javax908x [Thread[main,5,main]]: End time: 2010/03/13 12:09:01. Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.ucp.phases.AbstractPhaseType.cleanupxAbstractPhaseType.javax909x [Thread[main,5,main]]: Duration: 0:00:00.078. Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.ucp.phases.AbstractPhaseType.cleanupxAbstractPhaseType.javax910x [Thread[main,5,main]]: Phase status is error.

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  • Can't connect to Sql Server 2008 named instance

    - by eidylon
    I just installed Sql 2008 Express on a new server running Windows Server 2008. I know Sql is working properly, because I can connect to the db fine locally, on the server. I cannot connect to it from a client machine though, neither by IP address nor by machine name (iporname\instance). I know I have the correct IP address, because I am RDCing into the server to perform all this configuration and setup, and if I ping the server name, it is resolving to the correct IP address as well. On the server, I have set up an inbound firewall exception allowing all traffic on any port on any protocol to sqlservr.exe. In SSMS, in server > Properties > Connections Allow remote connections to this server is enabled. In Sql Server Configuration Manager, TCP/IP is enabled in both the Protocols for <instance> and the Client Protocols sections. I looked in the Windows logs, but don't see anything about connections being denied or dropped. As far as I can see, I have everything set right, but cannot connect from a client machine. The client CAN connect to other Sql 2008 Express servers okay, so I know the client configuration is correct. Any ideas where else I can look for info of what/where/how this connection is dropping, greatly apprecaited! The error being returned by the client is: **TITLE: Connect to Server** Cannot connect to [MY.IP.ADD.RSS]\[MYINSTNAME]. ADDITIONAL INFORMATION: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 Error Locating Server/Instance Specified) (Microsoft SQL Server, Error: -1)

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  • SQL Server Instance login issue

    - by reallyJim
    I've just brought up a new installation of SQL Server 2008. I installed the default instance as well as one named instance. I'm having a problem connecting to the named instance from anywhere besides the server itself with any user besides 'sa'. I am running in mixed mode. I have a login/user that has a known username. Using that user/login, I can properly connect when directly on the server. When I attempt to login from anywhere else, I recieve a "Login failed for user ''", with Error 18456. In the log file in the server, I see a reason that doesn't seem to help: "Reason: Could not find a login matching the name provided.". However, that user/login DOES exist, as I can use it locally. There are no further details about the error. Where can I start to find something to help me with this? I've tried deleting and recreating the user, as well as just creating a new one from scratch--same result, locally fine, remotely an error. EDIT: Partially Resolved. I'm now passed the base issue--the clients were trying to connect via the default instance. I don't know why. So, once proper ports were opened in the firewall, and a static port assigned to the named instance, I can now connect--BUT ONLY if I specify the connection as Server,Port. SQLBrowser is apparently not helping/working in this case. I've verified it IS running, and done a stop/restart after my config changes, but no difference yet.

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  • ssh timeout issue connecting to an EC2 instance on OS X

    - by mamusr
    I am new to AWS and not a networking expert but curious to know more about it. I created a VPC with a public subnet only. Then i created an EC2 instance using an Ubuntu 14.04 64-bit pv AMI image (ami-e84d8480) as well generating the key pair needed to connect to it through ssh. I followed amazon's instructions to connect to an EC2 instance via ssh which did not work. Here is my attempted input and debug log: Running on OS X 10.9.4 user$ ssh -vvv -i key.pem [email protected] OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011 debug1: Reading configuration data /etc/ssh_config debug1: /etc/ssh_config line 20: Applying options for * debug1: /etc/ssh_config line 102: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to xxx.xxx.xxx.xxx [xxx.xxx.xxx.xxx] port 22. debug1: connect to address xxx.xxx.xxx.xxx port 22: Operation timed out ssh: connect to host xxx.xxx.xxx.xxx port 22: Operation timed out To attempt to resolve the issue: I enabled the SSH port. Tried different usernames other than ubuntu, like ec2-user and root. Initially set an inbound ssh rule in the security group to connect to only my ip address. When that did not work, i changed it to allow any ip to connect. But those actions did not fix the problem. Here are my guesses as to what i am missing in getting the EC2 instance connection to work. My etc/ssh_config file may be preventing the connection from taking place. I may have missed an important networking detail when setting up the VPC. I do not have a public ip address specified for the instance. I am connecting through the private ip address. My questions for the community: Am i going about it the wrong way connecting to the instance through the private ip address? if so, do i need to specify a public ip address for it to connect or some other method?

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  • Available Instance types for marketplace ami's

    - by Christian
    I based my autoscaling AMI's on the Turnkey Linux nginx AMI from the marketplace. I am now unable to select any of the newer generation instance types; for instance, my autoscaling uses m3.large type but I'd really like it to use the c3.xlarge type but every time I try to create a c3.xlarge instance with my AMI I get errors; The instance configuration for this AWS Marketplace product is not supported. My question is; Can I override this? I'm not using TKL support or any of their services, just the AMI. If I can't override it, do I have any other options besides creating a brand new AMI from scratch to use?

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  • Windows Server 2012 VPN Server on AWS VPC EC2 Instance

    - by abran
    I'd like to use window server 2012 VPN on a AWS VPC EC2 instance. The VPC has one public subnet and the EC2 instance has one network adapter. I've taken the following steps, but have been unsuccessful; am I missing a step or configuration? Thanks. Configured an elastic IP for the VPC Enabled protocols 47, 50, & 51 Added the RRAS role to the (EC2 instance) server Configured the RRAS for vpn only. Note: I'm able to RDP to the EC2 instance, but not able to ping the external IP.

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  • Which EC2 instance best for Chef server?

    - by hakunin
    I want to setup chef server as cheaply as possible, while leaving it enough room to run without crashing. The only article I found on the subject warned that RabbitMQ would crash on a micro instance due to insufficient memory. The question is: what's the cheapest EC2 instance that can run chef server reliably, considering that I don't use CouchDB or RabbitMQ for anything else in my app, so would probably have to set them up exclusively for chef server on that same instance.

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  • Coldfusion multiserver instance hangs

    - by David Sedeño
    I have a coldfusion 8 multiserver setup with IIS in Windows 2008 Standard SP2 and when one instance "hangs" (I can't connect to the instance from fusion reactor) the web server throws a "503 service unavailable". The remains instance seems to works ok in fusion reactor but the website have only the 503. I have to restart jvm processes and IIS to get the website work again. The jvm processes have the option -Xmx2048m and the instanaces have 2.5Gb allocated. Maybe the jvm process reach the 2Gb limit and stop working? Can be a problem between IIS and CF instances? I'm new to CF debugging process, how can I find why the instance hangs? Thanks

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  • Creating an instance with a specified name, or renaming an instance name after it got created?

    - by Franck Dernoncourt
    I created 4 instances on OpenStack using euca-run-instances -k Franck -n 4 ami-00000023f. The created instances have the following instance names (as listed on OpenStack's Horizon web interface) Server b00b1b04-e9f9-4582-86ca-f5773a465f42-b00b1b04-e9f9-4582-86ca-f5773a465f42 Server 4d765b51-0511-474c-98f0-ef6199a23c7f-4d765b51-0511-474c-98f0-ef6199a23c7f Server 378964ac-630e-4490-b738-383bed6bacb1-378964ac-630e-4490-b738-383bed6bacb1 Server b00b1b04-e9f9-4582-86ca-f5773a465f42-b00b1b04-e9f9-4582-86ca-f5773a465f42 Is there any way to create an instance with a specified name, or to rename an instance name after it got created?

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  • Amazon EC2 instance missing Network Interface

    - by Sergiks
    I am running Linux on a t1.micro instance at Amazon EC2. Once I noticed bruteforce ssh login attemtps from a certain IP, after litle Googling I issued the two following commands (other ip): iptables -A INPUT -s 202.54.20.22 -j DROP iptables -A OUTPUT -d 202.54.20.22 -j DROP Either this, or maybe some other actions like yum upgrade perhaps, caused the follwing fiasco: after rebooting the server, it came up without the Network Interface! I only can connect to it through AWS Management Console JAVA ssh client - via local 10.x.x.x address. Console's Attach Network Interface as well as Detach.. are greyed out for this instance. Network Interfaces item at the left does not offer any Subnets to choose from, to create a new N.I. Please advice, how can I recreate a Network Interface for the instance? Upd. The instance is not accessible from outside: cannot be pinged, SSH'ed or connected by HTTP on port 80. Here's the ifconfig output: eth0 Link encap:Ethernet HWaddr 12:31:39:0A:5E:06 inet addr:10.211.93.240 Bcast:10.211.93.255 Mask:255.255.255.0 inet6 addr: fe80::1031:39ff:fe0a:5e06/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1426 errors:0 dropped:0 overruns:0 frame:0 TX packets:1371 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:152085 (148.5 KiB) TX bytes:208852 (203.9 KiB) Interrupt:25 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) What is also unusual: a new micro instance I created from scratch, with no relation to the troubled one, was not pingable too.

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  • Server 2008R2 in Extra Small Windows Azure Instance?

    - by Shawn Eary
    Windows Azure hosting for an Extra Small (XS) Windows VM seems to come out to be about $10 a month right now. I think this XS instance gives you the equivalent of a 1 GHZ CPU with 768MB of RAM. I think the minimum requirements for Server 2008 is 1GHZ CPU with 512MB of RAM. Also, I think the minimum requirements for SQL Server Express is 1GHZ CPU with 256 MB of RAM and that the minimum requirements for Team Foundation Server Express 11 Beta is 2.2 GHZ CPU with 1 Gig of RAM (this 2.2 GHZ part could be a problem for my 1 GHZ XS VM...). Given the performance of the XS Azure instance, would I be able to install: a very basic MVC web site; a free instance of SQL Server Express; a free single user instance of Team Foundation Server Express 11 Beta and run the XS VM instance without serious crashing? I know there are other Shared WebHost providers that can provide these features for me, but those hosting providers have the following disadvantages: They sometimes cost a lot of money after all of the "addons" are in place They probably don't provide the level of security and employee integrity that Microsoft can provide They don't provide the total control that an Azure VM seems to provide

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  • hyper-v server 2003 instance using internet connection sharing disconnects remote desktop to hyper-v host

    - by Joseph Southwell
    I have a windows server 2003 R2 instance running in a hyper-v instance on windows 8. I have setup an internal switch that uses internet connection sharing to get out to the internet. It works fine except for when I try to do windows update on the server 2003 instance it disconnects my remote desktop session to the windows 8 hyper-v host. When I reconnect it says windows update failed. I know that sounds crazy but I have tested it over and over again. If I change the instance to use my external switch (I have an external switch defined on another network adapter) windows update works fine.

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  • How to upgrade a single instance's size without downtime

    - by Justin Meltzer
    I'm afraid there may not be a way to do this since we're not load balancing, but I'd like to know if there is any way to upgrade an EC2 EBS backed instance to a larger size without downtime. First of all, we have everything on one instance: both our app and our database (mongodb). This is along the lines i'm thinking: I know you can create snapshots of your EBS and an AMI of your instance. We already have an AMI and we create hourly snapshots. If I spin up a new separate instance of a larger size and then implement (not sure what the right term is here) the snapshots so that our database is up to date, then I could switch the A record of our domain from the old ip address to the new one. However, I'm afraid that after copying over the data from the snapshot, by the time it takes to change the A record and have that change propagate, the data could potentially be stale. Is there a way to prevent this, and is there a better way to do this than I am suggesting?

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  • SQL Server Instance login issue

    - by reallyJim
    I've just brought up a new installation of SQL Server 2008. I installed the default instance as well as one named instance. I'm having a problem connecting to the named instance from anywhere besides the server itself with any user besides 'sa'. I am running in mixed mode. I have a login/user that has a known username. Using that user/login, I can properly connect when directly on the server. When I attempt to login from anywhere else, I recieve a "Login failed for user ''", with Error 18456. In the log file in the server, I see a reason that doesn't seem to help: "Reason: Could not find a login matching the name provided.". However, that user/login DOES exist, as I can use it locally. There are no further details about the error. Where can I start to find something to help me with this? I've tried deleting and recreating the user, as well as just creating a new one from scratch--same result, locally fine, remotely an error. EDIT: Partially Resolved. I'm now passed the base issue--the clients were trying to connect via the default instance. I don't know why. So, once proper ports were opened in the firewall, and a static port assigned to the named instance, I can now connect--BUT ONLY if I specify the connection as Server,Port. SQLBrowser is apparently not helping/working in this case. I've verified it IS running, and done a stop/restart after my config changes, but no difference yet.

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