CGI Context

Description

A CGI context defines scripts in a particular directory as CGI scripts. This directory can be inside or outside of the document root. When a file under this directory is requested, the server will always try to execute it as a CGI script, no matter if it's executable or not. In this way, file content under a CGI Context is always protected and cannot be read as static content. It is recommended that you put all your CGI scripts in a directory and set up a CGI Context to access them.

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

Description

Specifies the location of CGI scripts.

Syntax

The path can be a directory that contains a group of CGI scripts, like $VH_ROOT/myapp/cgi-bin/. In this case, the context URI must end with "/", like /app1/cgi/. The Path can also specify only one CGI script, like $VH_ROOT/myapp/myscript.pl. This script should have the corresponding URI /myapp/myscript.pl.

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

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.

Description

Specifies whether the set UID bit is allowed for CGI scripts. If the set UID bit is allowed and the set UID bit is enabled for a CGI script, no matter which user the CGI script was started on behalf of, the user ID of the CGI process will switch to the user ID of the owner of the CGI script.
The default is "Off".

Syntax

Select from radio box

Tips

Do not allow Set UID CGI scripts whenever possible, as it is inherently a security risk.

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.

Syntax

Select from checkbox

Tips

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

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

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.

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.

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

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

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 https://fastcgi-archives.github.io/ .

Syntax

Select from drop down list

Description

Specifies whether to add a character set tag to the "Content-Type" response header, when content type is either "text/html" or "text/plain" without any parameters. When set to Off, this function is disabled. When set to On, either the character set specified by Customized Default Charset or the default "iso-8859-1" will be added.

Syntax

Select from radio box

Description

Specifies a character set to be used when Add Default Charset is On. This is optional. The default value is iso-8859-1. This entry has no effect when Add Default Charset is Off.

Syntax

Name of a character set.

Example

Description

Specifies whether to enable LiteSpeed's URL rewrite engine. This option can be customized at the virtual host or context level, and is inherited along the directory tree until it is explicitly overridden.

Syntax

Select from radio box

Description

Specifies whether to inherit rewrite rules from parent contexts. If rewrite is enabled and not inherited, rewrite base and rewrite rules defined in this context will be used.

Syntax

Select from radio box

Description

Specifies the base URL for rewrite rules.

Syntax

URL

Description

Specifies a list of rewrite rules at the virtual host level.

Do NOT add any document root level rewrite rules here. If you have any document root level rewrite rules from .htaccess, you should instead create a static context with uri "/" and add the rewrite rules there.

A rewrite rule is comprised of one RewriteRule directive and optionally preceded by multiple RewriteCond directives.

• Each directive should take only one line.
• RewriteCond and RewriteRule follow Apache's rewrite directive syntax. Just copy and paste rewrite directives from your Apache configuration files.
• There are minor differences between LiteSpeed and Apache mod_rewrite implementation:
  • %\{LA-U:variable\} and %\{LA-F:variable\} are ignored by the LiteSpeed rewrite engine
  • Two new server variables are added in the LiteSpeed rewrite engine: %\{CURRENT_URI\} represents the current URI being processed by the rewrite engine and %\{SCRIPT_NAME\} has the same meaning as the corresponding CGI environment variable.
  • The LiteSpeed rewrite engine will stop processing rewrite rules after encountering an [L] flag to avoid looping while Apache mod_rewrite will stop processing rewrite rules for the current iteration only. This behavior is similar to that of the [END] flag in Apache mod_rewrite.

Syntax

string

Description

Specifies how long an object will continue to be served from cache after it has expired but before a new cached copy is available. The default is "10" seconds.

Syntax

Integer number

Description

Publicly cache all URLs served under the current context (virtual host, or context level).

Virtual hosts configured through Apache's httpd.conf can use the "CacheEnable" and "CacheDisable" directives at the server, virtual host, context, file, and location level or in .htaccess. "CacheEnable" and "CacheDisable" directives are compatible with Apache mod_cache directives. However, when used at the context, file, or location level, or in .htaccess, "CacheEnable" and "CacheDisable" will only be applied to directories below the current level. URL parameters will be ignored.

Syntax

Select from radio box

Tips

Disabled by default. Do not enabled this setting if you are using any LSCache plugins.

Description

Specifies how long an object will be cached. The default is "86400" seconds (one day).

Syntax

Integer number

Description

Cache pages responding with HTTP status code 5xx (500, 503, etc) for 10 seconds when the cache response header indicates that the page is cacheable.

Default values:
Server level: Yes
VH level: Inherit Server level setting
Context-level Inherit VH level setting

Syntax

Select from radio box

Tips

Enabling this setting is useful for avoiding bad requests but can also act as some added DDoS protection.

Description

Privately cache all URLs served under the current context (virtual host, or context level).

A separate cached copy will be made per user based on their IP and set cookies.

Virtual hosts configured through Apache's httpd.conf can use the "CacheEnable private /url" and "CacheDisable private /url" directives at server, virtual host, directory, file, and location levels or in a .htaccess file. "CacheEnable private" and "CacheDisable private" are compatible with Apache's mod_cache directives and will be applied to all directories below the current level. However, when used at the directory, file, or location level, or in a .htaccess file, "CacheEnable private" and "CacheDisable private" will only be applied to directories below the current level. URL parameters will be ignored.

Syntax

Select from radio box

Tips

Disabled by default. Do not enabled this setting if you are using any LSCache plugins.

Description

Specifies how long an object will be cached in private cache. The default is "60" seconds.

Syntax

Integer number

Description

Specifies if POST requests can be cached using the "x-litespeed-cache-control" header.

Default value: No

Syntax

Select from radio box

Description

Enterprise Edition Only Specifies whether to enable/disable IP Geolocation lookup. Can be set at server, virtual host, or context level. IP Geolocation is disabled by default when using value "Not Set".

Syntax

Select from radio box

See Also

Use Client IP in Header, DB File Path,

Description

Choose whether or not to enable PageSpeed optimization.

Syntax

Select from radio box

Tips

This can be set at the Server Level and overridden at the Virtual Host and Context Levels. Context Level settings will override Virtual Host Level settings.

Description

Set parameters using Google default filter sets.

Example

Description

Specifies Apache configuration directives (supported by LiteSpeed) that you want to use in LiteSpeed native configuration file. For example, to override the default PHP configurations (php.ini entries) the server will need four directives: "php_value", "php_flag", "php_admin_value" and "php_admin_flag".

Syntax

Same as Apache configuration file.