Module ngx_http_auth_basic_module

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2023-12-01

The ngx_http_auth_basic_module module allows to limit access to resources by validating the user name and password using the “HTTP Basic Authentication” protocol.

Access can also be limited by address. Simultaneous limitation of access by address and by password is controlled by the satisfy directive.

Example Configuration

location / {
    auth_basic           "closed site";
    auth_basic_user_file conf/htpasswd;
}

Directives

syntax:	`auth_basic string \| off;`
default:	auth_basic off;
context:	`http`, `server`, `location`, `limit_except`

Enables validation of user name and password using the “HTTP Basic Authentication” protocol. The specified parameter is used as a realm. Value of the parameter can contain variables (1.3.10). The special value off allows to cancel the effect of the auth_basic directive inherited from the previous configuration level.

syntax:	`auth_basic_user_file file;`
default:	—
context:	`http`, `server`, `location`, `limit_except`

Specifies a file that keeps user names and passwords, in the following format:

# comment
name1:password1
name2:password2:comment
name3:password3

The following password types are supported:

encrypted with the crypt() function; can be generated using the “htpasswd” utility from the Apache HTTP Server distribution or the “openssl passwd” command;
hashed with the Apache variant of the MD5-based password algorithm (apr1); can be generated with the same tools;
specified by the “{scheme}data” syntax (1.0.3+) as described in RFC 2307; currently implemented schemes include PLAIN (an example one, should not be used) and SSHA (salted SHA-1 hashing, used by some software packages, notably OpenLDAP and Dovecot).