Proxy-Authenticate

Proxy-Authenticate

The HTTP Proxy-Authenticate response header defines the authentication method that should be used to gain access to a resource behind a proxy server. It authenticates the request to the proxy server, allowing it to transmit the request further.

The Proxy-Authenticate header is sent along with a 407 Proxy Authentication Required.

Syntax

Proxy-Authenticate: <type> realm=<realm>

Directives

<type>

Authentication type. A common type is "Basic". IANA maintains a list of authentication schemes.

realm=<realm>

A description of the protected area, the realm. If no realm is specified, clients often display a formatted host name instead.

Examples

Proxy-Authenticate: Basic

Proxy-Authenticate: Basic realm="Access to the internal site"

Specifications

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
Proxy-Authenticate	1	≤79	1	?	Yes	?	37	Yes	Yes	Yes	?	Yes

See also

• HTTP authentication
• Authorization
• Proxy-Authorization
• WWW-Authenticate
• 401, 403, 407