httpstatuses/contents/codes/407.md
2015-11-07 05:45:46 +00:00

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---
set: 4
code: 407
title: Proxy Authentication Required
references:
"Rails HTTP Status Symbol": ":proxy_authentication_required"
---
The 407 Proxy Authentication Required status code is similar to
[401 (Unauthorized)](/401), but it indicates that the client needs to
authenticate itself in order to use a proxy.
The proxy MUST send a Proxy-Authenticate header field ([Section 4.3][2])
containing a challenge applicable to that proxy for the target resource.
The client MAY repeat the request with a new or replaced Proxy-Authorization
header field ([Section 4.4][3]).
Source: [RFC7235 Section 3.2][1]
[1]: <http://tools.ietf.org/html/rfc7235#section-3.2>
[2]: <http://tools.ietf.org/html/rfc7235#section-4.3>
[3]: <http://tools.ietf.org/html/rfc7235#section-4.4>