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Redirect Context

Table of Contents

Redirect Context

URI | External Redirect | Status Code | Destination URI | Header Operations | Allow Override | Realm | Authentication Name | Require (Authorized Users/Groups) | Access Allowed | Access Denied | Authorizer

Redirect Context

Description

A Redirect Context can be used to forward one URI or a group of URIs to another location. The destination URI can be either on the same web site (an internal redirect) or an absolute URI pointing to another web site (an external redirect).

URI

Description

Specifies the URI for this context.

Syntax

The URI can be a plain URI (starting with "/") or a Perl compatible regular expression URI (starting with "exp:"). If a plain URI ends with a "/", then this context will include all sub-URIs under this URI. If the context maps to a directory on the file system, a trailing "/" must be added.

See Also

Location

External Redirect

Description

Specifies whether this redirect is external. For external redirection, Status Code may be specified and Destination URI can start either with "/" or "http(s)://". For internal redirection, Destination URI must start with "/".

Status Code

Description

Specifies the response status code of the external redirection. If the status code is between 300 and 399, Destination URI can be specified.

Syntax

Select from drop down list

Destination URI

Description

Specifies the target location of the redirect. If this redirected URI maps to a URI in another redirect context, it will be redirected again.

Syntax

This URI can either be a relative URI on the same web site starting with "/", or an absolute URI pointing to different web site starting with "http(s)://". If the URI contains regular expressions, the destination can reference the matched variables, such as $1 or $2.

Header Operations

Description

Specifies additional response/request headers to be added. Multiple header directives can be added with one directive per line. "NONE" can be used to disable parent header inheritance. If no directive is provided 'Header' is assumed.

Syntax

[Header]|RequestHeader [condition] set|append|merge|add|unset header [value] [early|env=[!]variable]

Example

set Cache-control no-cache
append Cache-control no-store
Header set My-header cust_header_val
RequestHeader set My-req-header cust_req_header_val

Tips

Syntax and usage are similar to Apache's mod_headers directives for supported operations.

The 'Header' directive is is optional and can be excluded or left in when copying rules from elsewhere without issue.

Allow Override

Description

Specifies what directives in an access control file are allowed. An access control file can be placed in a directory to control the accessibility of files under that directory.

  • When nothing is checked, inherited default settings will be used.
  • When None is checked, access control files will be ignored.
  • When Limit is checked, directives "Allow", "Deny", and "Order" are allowed. <Limit> and <LimitExcept> directives are also allowed with limited support for GET, HEAD, and POST requests.
  • When Auth is checked, directives "AuthGroupFile", "AuthName", "AuthType", "AuthUserFile", "Require", and "Satisfy" are allowed. <Limit> and <LimitExcept> directives are also allowed with limited support for GET, HEAD, and POST requests.
  • When FileInfo is checked, directives "AddDefaultCharset", "AddType", "DefaultType", "ForceType", "Redirect", "RedirectPermanent", "RedirectTemp", "RewriteBase", "RewriteCond", "RewriteEngine", "RewriteOptions", and "RewriteRule" are allowed.
  • When Indexes is checked, directives "DirectoryIndex", "ExpiresActive", "ExpiresByType", and "ExpiresDefault" are allowed.
  • When Options is checked, directive "Options" is allowed.

Allow Override configuration is available at the Server, Virtual Host, and Context levels. If a configuration is unchecked at the Server level, those controlled directives will be disabled for the entire server regardless of settings at lower levels. Lower levels can disable a setting that is enabled at a higher level, but cannot enable a setting that is disabled at an upper level.

Default values:
Server level: "None" (ignore access control file)
VH level: Inherit Server level setting
Context level Inherit VH level setting

Syntax

Select from checkbox

Tips

If there is no need for directory level configuration customization, check None.

Realm

Description

Specifies the authorization realm for this context. When specified, a valid username and password must be provided in order to access this context. Authorization Realms are set up in the Virtual Host Security section. This setting uses each realm's Realm Name.

Syntax

Select from drop down list

Authentication Name

Description

Specifies an alternative name for the authorization realm for the current context. If not specified, the original realm name will be used. The authentication name is displayed on the browser's login pop-up.

Require (Authorized Users/Groups)

Description

Specifies which user/group can access this context. This allows you to use one user/group database (specified in Realm) across a number of contexts, but only allow certain users/groups from that database to access this context.

Syntax

Syntax is compatible with Apache's Require directive. For example:

  • user username [username ...]
    Only listed users can access this context.
  • group groupid [groupid ...]
    Only users belonging to the listed groups can access this context.
If this setting is not specified, all valid users will be allowed to access this resource.

Access Allowed

Description

Specifies which IPs or sub-networks are allowed to access resources under this context. Together with Access Denied and server/virtual host level access control, accessibility is determined by the smallest scope that a client's IP address falls into.

Syntax

Comma-delimited list of IPs/sub-networks.

Example

Sub-networks can be written as 192.168.1.0/255.255.255.0, 192.168.1, or 192.168.1.*.

Access Denied

Description

Specifies which IPs or sub-networks are NOT allowed to access resources under this context. Together with Access Allowed and server/virtual host-level access control, accessibility is determined by the smallest scope that a client's IP address falls into.

Syntax

Comma-delimited list of IPs/sub-networks.

Example

Sub-networks can be written as 192.168.1.0/255.255.255.0, 192.168.1, or 192.168.1.*.

Authorizer

Description

Specifies an external application that can be used to generate authorized/unauthorized decisions. Currently, only the FastCGI Authorizer is available. For more details about the FastCGI Authorizer role, please visit http://www.fastcgi.com.

Syntax

Select from drop down list

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