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freeCodeCamp/guide/english/certifications/information-security-and-quality-assurance/information-security-with-helmetjs/disable-dns-prefetching-with-helmet.dnsprefetchcontrol/index.md
Tom e74fcb2108 [guide] [english] Fill in stubs for helmet lessons (#34332) 
* fill in stub for helmet lesson on noSniff()

* fill in stub for helmet lesson ieNoOpen()

* fill in helmet hsts() stub

* fill in stub for helmetjs lesson-DNS prefetching

* fill in stub for helmet lesson on noCache()

* fill in stub for helmetjs lesson on XSS

* fill in stub for helmet lesson 'parent'

* fill in stub for lesson on bcrypt

* fix type `is` to `it` on line 11

* fill in stub for bcrypt hash lesson

* fill in stub for bcrypt hash sync

* fill stub for helmet lessons overview

* fix spacing

* fix typo
2019-02-11 13:25:59 -07:00

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Disable DNS Prefetching with helmet.dnsPrefetchControl()

Disable DNS Prefetching with helmet.dnsPrefetchControl()

Hint

  • You want your app to use helmet's dnsPrefetchControl() method.

Solution

  • In the myApp.js file add app.use(helmet.dnsPrefetchControl()); under the eighth instructions.

Note: Be sure to submit the link to the live demo of your project.