# Support for Kerberos Proxy Authentication (407 Error)

**URL:** <https://community.postman.com/t/support-for-kerberos-proxy-authentication-407-error/75946>\
**Category:** Help Hub\
**Tags:** proxy\
**Created:** [February 23, 2025, 9:48pm UTC](https://community.postman.com/t/support-for-kerberos-proxy-authentication-407-error/75946 "2025-02-23T21:48:55Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![nerdromancer](https://avatars.discourse-cdn.com/v4/letter/n/6f9a4e/32.png) [@nerdromancer](https://community.postman.com/u/nerdromancer)\
**Post date:** [February 23, 2025, 9:48pm UTC](https://community.postman.com/t/support-for-kerberos-proxy-authentication-407-error/75946/1 "2025-02-23T21:48:55Z")

</div>

Our proxy requires Kerberos Auth. This results in a 407 error if the negotiation is not handled correctly. The 407 would be properly handled if a Kerberos proxy was expected. With curl, you can use --proxy-negotiate to handle this. Is there a way to configure Postman to do the same? I’ve tried the Default proxy with my network creds, but no luck.