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42 lines
3.1 KiB
Markdown
42 lines
3.1 KiB
Markdown
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# websspi
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[](https://godoc.org/github.com/quasoft/websspi) [](https://travis-ci.org/quasoft/websspi) [](https://coveralls.io/github/quasoft/websspi?branch=master) [](https://goreportcard.com/report/github.com/quasoft/websspi)
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`websspi` will be an HTTP middleware for Golang that uses Kerberos for single sign-on (SSO) authentication of browser based clients in a Windows environment.
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The main goal is to create a middleware that performs authentication of HTTP requests without the need to create or use keytab files.
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The middleware will implement the scheme defined by RFC4559 (SPNEGO-based HTTP Authentication in Microsoft Windows) to exchange security tokens via HTTP headers and will use SSPI (Security Support Provider Interface) to authenticate HTTP requests.
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## How to use
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The examples directory contains a simple web server that demonstrates how to use the package.
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Before trying it, you need to prepare your environment:
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1. Create a separate user account in active directory, under which the web server process will be running (eg. `user` under the `domain.local` domain)
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2. Create a service principal name for the host with class HTTP:
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- Start Command prompt or PowerShell as domain administrator
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- Run the command below, replacing `host.domain.local` with the fully qualified domain name of the server where the web application will be running, and `domain\user` with the name of the account created in step 1.:
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setspn -A HTTP/host.domain.local domain\user
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3. Start the web server app under the account created in step 1.
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4. If you are using Chrome, Edge or Internet Explorer, add the URL of the web app to the Local intranet sites (`Internet Options -> Security -> Local intranet -> Sites`)
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5. Start Chrome, Edge or Internet Explorer and navigate to the URL of the web app (eg. `http://host.domain.local:9000`)
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6. The web app should greet you with the name of your AD account without asking you to login. In case it doesn't, make sure that:
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- You are not running the web browser on the same server where the web app is running. You should be running the web browser on a domain joined computer (client) that is different from the server
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- There is only one HTTP/... SPN for the host
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- The SPN contains only the hostname, without the port
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- You have added the URL of the web app to the `Local intranet` zone
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- The clocks of the server and client should not differ with more than 5 minutes
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- `Integrated Windows Authentication` should be enabled in Internet Explorer (under `Advanced settings`)
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## Security requirements
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- SPNEGO HTTP provides no facilities for protecting the HTTP headers or data including the Authorization and WWW-Authenticate headers, which means that the HTTP server **MUST** enforce use of SSL to provide confidentiality to data in these headers!
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