diff options
| author |   hongbotian <hongbo.tianhongbo@huawei.com> | 2015-11-30 01:35:09 -0500 |
|---|---|---|
| committer | hongbotian <hongbo.tianhongbo@huawei.com> | 2015-11-30 01:36:35 -0500 |
| commit | cc40af334e619bb549038238507407866f774f8f (patch) | |
| tree | 43ddc1974f72997a57173151eafb23e6025a13c9 /rubbos/app/apache2/manual/mod/mod_access.html.en | |
| parent | 68e74fd78b2485e5914ce34a5b30f4485029e021 (diff) | |
upload apache
JIRA: BOTTLENECK-10
Change-Id: I67eae31de6dc824097dfa56ab454ba36fdd23a2c
Signed-off-by: hongbotian <hongbo.tianhongbo@huawei.com>
Diffstat (limited to 'rubbos/app/apache2/manual/mod/mod_access.html.en')
| -rw-r--r-- | rubbos/app/apache2/manual/mod/mod_access.html.en | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/rubbos/app/apache2/manual/mod/mod_access.html.en b/rubbos/app/apache2/manual/mod/mod_access.html.en new file mode 100644 index 00000000..18f9ceb0 --- /dev/null +++ b/rubbos/app/apache2/manual/mod/mod_access.html.en @@ -0,0 +1,372 @@ +<?xml version="1.0" encoding="ISO-8859-1"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><!-- + XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX + This file is generated from xml source: DO NOT EDIT + XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX + --> +<title>mod_access - Apache HTTP Server</title> +<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /> +<link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /> +<link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /> +<link href="../images/favicon.ico" rel="shortcut icon" /></head> +<body> +<div id="page-header"> +<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="../faq/">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p> +<p class="apache">Apache HTTP Server Version 2.0</p> +<img alt="" src="../images/feather.gif" /></div> +<div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div> +<div id="path"> +<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.0</a> > <a href="./">Modules</a></div> +<div id="page-content"> +<div id="preamble"><h1>Apache Module mod_access</h1> +<div class="toplang"> +<p><span>Available Languages: </span><a href="../en/mod/mod_access.html" title="English"> en </a> | +<a href="../ja/mod/mod_access.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a></p> +</div> +<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Provides access control based on client hostname, IP +address, or other characteristics of the client request.</td></tr> +<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Base</td></tr> +<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>access_module</td></tr> +<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_access.c</td></tr> +<tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available only in versions prior to 2.1</td></tr></table> +<h3>Summary</h3> + + <p>The directives provided by <code class="module"><a href="../mod/mod_access.html">mod_access</a></code> are used + in <code class="directive"><a href="../mod/core.html#directory"><Directory></a></code>, + <code class="directive"><a href="../mod/core.html#files"><Files></a></code>, and + <code class="directive"><a href="../mod/core.html#location"><Location></a></code> sections + as well as <code><a href="core.html#accessfilename">.htaccess</a></code> + files to control access to particular parts of the server. Access + can be controlled based on the client hostname, IP address, or + other characteristics of the client request, as captured in <a href="../env.html">environment variables</a>. The <code class="directive"><a href="#allow">Allow</a></code> and <code class="directive"><a href="#deny">Deny</a></code> directives are used to + specify which clients are or are not allowed access to the server, + while the <code class="directive"><a href="#order">Order</a></code> + directive sets the default access state, and configures how the + <code class="directive"><a href="#allow">Allow</a></code> and <code class="directive"><a href="#deny">Deny</a></code> directives interact with each + other.</p> + + <p>Both host-based access restrictions and password-based + authentication may be implemented simultaneously. In that case, + the <code class="directive"><a href="../mod/core.html#satisfy">Satisfy</a></code> directive is used + to determine how the two sets of restrictions interact.</p> + + <p>In general, access restriction directives apply to all + access methods (<code>GET</code>, <code>PUT</code>, + <code>POST</code>, etc). This is the desired behavior in most + cases. However, it is possible to restrict some methods, while + leaving other methods unrestricted, by enclosing the directives + in a <code class="directive"><a href="../mod/core.html#limit"><Limit></a></code> section.</p> +</div> +<div id="quickview"><h3 class="directives">Directives</h3> +<ul id="toc"> +<li><img alt="" src="../images/down.gif" /> <a href="#allow">Allow</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#deny">Deny</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#order">Order</a></li> +</ul> +<h3>See also</h3> +<ul class="seealso"> +<li><code class="directive"><a href="../mod/core.html#satisfy">Satisfy</a></code></li> +<li><code class="directive"><a href="../mod/core.html#require">Require</a></code></li> +</ul></div> + +<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="directive-section"><h2><a name="Allow" id="Allow">Allow</a> <a name="allow" id="allow">Directive</a></h2> +<table class="directive"> +<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Controls which hosts can access an area of the +server</td></tr> +<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code> Allow from + all|<var>host</var>|env=<var>env-variable</var> + [<var>host</var>|env=<var>env-variable</var>] ...</code></td></tr> +<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr> +<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Limit</td></tr> +<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr> +<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_access</td></tr> +</table> + + <p>The <code class="directive">Allow</code> directive affects which hosts can + access an area of the server. Access can be controlled by + hostname, IP address, IP address range, or by other + characteristics of the client request captured in environment + variables.</p> + + <p>The first argument to this directive is always + <code>from</code>. The subsequent arguments can take three + different forms. If <code>Allow from all</code> is specified, then + all hosts are allowed access, subject to the configuration of the + <code class="directive"><a href="#deny">Deny</a></code> and <code class="directive"><a href="#order">Order</a></code> directives as discussed + below. To allow only particular hosts or groups of hosts to access + the server, the <var>host</var> can be specified in any of the + following formats:</p> + + <dl> + <dt>A (partial) domain-name</dt> + + <dd> + <div class="example"><h3>Example:</h3><p><code> + Allow from apache.org<br /> + Allow from .net example.edu + </code></p></div> + <p>Hosts whose names match, or end in, this string are allowed + access. Only complete components are matched, so the above + example will match <code>foo.apache.org</code> but it will not + match <code>fooapache.org</code>. This configuration will cause + Apache to perform a double reverse DNS lookup on the client IP + address, regardless of the setting of the <code class="directive"><a href="../mod/core.html#hostnamelookups">HostnameLookups</a></code> directive. It will do + a reverse DNS lookup on the IP address to find the associated + hostname, and then do a forward lookup on the hostname to assure + that it matches the original IP address. Only if the forward + and reverse DNS are consistent and the hostname matches will + access be allowed.</p></dd> + + <dt>A full IP address</dt> + + <dd> + <div class="example"><h3>Example:</h3><p><code> + Allow from 10.1.2.3<br /> + Allow from 192.168.1.104 192.168.1.205 + </code></p></div> + <p>An IP address of a host allowed access</p></dd> + + <dt>A partial IP address</dt> + + <dd> + <div class="example"><h3>Example:</h3><p><code> + Allow from 10.1<br /> + Allow from 10 172.20 192.168.2 + </code></p></div> + <p>The first 1 to 3 bytes of an IP address, for subnet + restriction.</p></dd> + + <dt>A network/netmask pair</dt> + + <dd> + <div class="example"><h3>Example:</h3><p><code> + Allow from 10.1.0.0/255.255.0.0 + </code></p></div> + <p>A network a.b.c.d, and a netmask w.x.y.z. For more + fine-grained subnet restriction.</p></dd> + + <dt>A network/nnn CIDR specification</dt> + + <dd> + <div class="example"><h3>Example:</h3><p><code> + Allow from 10.1.0.0/16 + </code></p></div> + <p>Similar to the previous case, except the netmask consists of + nnn high-order 1 bits.</p></dd> + </dl> + + <p>Note that the last three examples above match exactly the + same set of hosts.</p> + + <p>IPv6 addresses and IPv6 subnets can be specified as shown + below:</p> + + <div class="example"><p><code> + Allow from 2001:db8::a00:20ff:fea7:ccea<br /> + Allow from 2001:db8::a00:20ff:fea7:ccea/10 + </code></p></div> + + <p>The third format of the arguments to the + <code class="directive">Allow</code> directive allows access to the server + to be controlled based on the existence of an <a href="../env.html">environment variable</a>. When <code>Allow from + env=<var>env-variable</var></code> is specified, then the request is + allowed access if the environment variable <var>env-variable</var> + exists. The server provides the ability to set environment + variables in a flexible way based on characteristics of the client + request using the directives provided by + <code class="module"><a href="../mod/mod_setenvif.html">mod_setenvif</a></code>. Therefore, this directive can be + used to allow access based on such factors as the clients + <code>User-Agent</code> (browser type), <code>Referer</code>, or + other HTTP request header fields.</p> + + <div class="example"><h3>Example:</h3><p><code> + SetEnvIf User-Agent ^KnockKnock/2\.0 let_me_in<br /> + <Directory /docroot><br /> + <span class="indent"> + Order Deny,Allow<br /> + Deny from all<br /> + Allow from env=let_me_in<br /> + </span> + </Directory> + </code></p></div> + + <p>In this case, browsers with a user-agent string beginning + with <code>KnockKnock/2.0</code> will be allowed access, and all + others will be denied.</p> + +</div> +<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="directive-section"><h2><a name="Deny" id="Deny">Deny</a> <a name="deny" id="deny">Directive</a></h2> +<table class="directive"> +<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Controls which hosts are denied access to the +server</td></tr> +<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code> Deny from all|<var>host</var>|env=<var>env-variable</var> +[<var>host</var>|env=<var>env-variable</var>] ...</code></td></tr> +<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr> +<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Limit</td></tr> +<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr> +<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_access</td></tr> +</table> + <p>This directive allows access to the server to be restricted + based on hostname, IP address, or environment variables. The + arguments for the <code class="directive">Deny</code> directive are + identical to the arguments for the <code class="directive"><a href="#allow">Allow</a></code> directive.</p> + +</div> +<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="directive-section"><h2><a name="Order" id="Order">Order</a> <a name="order" id="order">Directive</a></h2> +<table class="directive"> +<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Controls the default access state and the order in which +<code class="directive">Allow</code> and <code class="directive">Deny</code> are +evaluated.</td></tr> +<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code> Order <var>ordering</var></code></td></tr> +<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>Order Deny,Allow</code></td></tr> +<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr> +<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Limit</td></tr> +<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr> +<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_access</td></tr> +</table> + + <p>The <code class="directive">Order</code> directive, along with the + <code class="directive"><a href="#allow">Allow</a></code> and <code class="directive"><a href="#deny">Deny</a></code> directives, controls a + three-pass access control system. The first pass processes either + all <code class="directive"><a href="#allow">Allow</a></code> or all + <code class="directive"><a href="#deny">Deny</a></code> directives, as + specified by the <code class="directive">Order</code> directive. The second + pass parses the rest of the directives (<code class="directive"><a href="#deny">Deny</a></code> or <code class="directive"><a href="#allow">Allow</a></code>). The third pass applies to + all requests which do not match either of the first two.</p> + + <p>Note that all <code class="directive"><a href="#allow">Allow</a></code> + and <code class="directive"><a href="#deny">Deny</a></code> directives are + processed, unlike a typical firewall, where only the first match is + used. The last match is effective (also unlike a typical firewall). + Additionally, the order in which lines appear in the configuration + files is not significant -- all <code class="directive"><a href="#allow">Allow</a></code> lines are processed as one + group, all <code class="directive"><a href="#deny">Deny</a></code> lines are + considered as another, and the default state is considered by + itself.</p> + + <p><em>Ordering</em> is one of:</p> + + <dl> + <dt><code>Allow,Deny</code></dt> + + <dd>First, all <code class="directive"><a href="#allow">Allow</a></code> + directives are evaluated; at least one must match, or the request + is rejected. Next, all <code class="directive"><a href="#deny">Deny</a></code> directives are evaluated. If + any matches, the request is rejected. Last, any requests which do + not match an <code class="directive"><a href="#allow">Allow</a></code> or a + <code class="directive"><a href="#deny">Deny</a></code> directive are + denied by default.</dd> + + <dt><code>Deny,Allow</code></dt> + + <dd>First, all <code class="directive"><a href="#deny">Deny</a></code> + directives are evaluated; if any match, the request is denied + <strong>unless</strong> it also matches an <code class="directive"><a href="#allow">Allow</a></code> directive. Any requests + which do not match any <code class="directive"><a href="#allow">Allow</a></code> or <code class="directive"><a href="#deny">Deny</a></code> directives are + permitted.</dd> + + <dt><code>Mutual-failure</code></dt> + + <dd>This order has the same effect as <code>Order + Allow,Deny</code> and is deprecated in its favor.</dd> + </dl> + + <p>Keywords may only be separated by a comma; <em>no whitespace</em> + is allowed between them.</p> + + <table class="bordered"> + <tr> + <th>Match</th> + <th>Allow,Deny result</th> + <th>Deny,Allow result</th> + </tr><tr> + <th>Match Allow only</th> + <td>Request allowed</td> + <td>Request allowed</td> + </tr><tr> + <th>Match Deny only</th> + <td>Request denied</td> + <td>Request denied</td> + </tr><tr> + <th>No match</th> + <td>Default to second directive: Denied</td> + <td>Default to second directive: Allowed</td> + </tr><tr> + <th>Match both Allow & Deny</th> + <td>Final match controls: Denied</td> + <td>Final match controls: Allowed</td> + </tr> + </table> + + <p>In the following example, all hosts in the apache.org domain + are allowed access; all other hosts are denied access.</p> + + <div class="example"><p><code> + Order Deny,Allow<br /> + Deny from all<br /> + Allow from apache.org + </code></p></div> + + <p>In the next example, all hosts in the apache.org domain are + allowed access, except for the hosts which are in the foo.apache.org + subdomain, who are denied access. All hosts not in the apache.org + domain are denied access because the default state is to <code class="directive"><a href="#deny">Deny</a></code> access to the server.</p> + + <div class="example"><p><code> + Order Allow,Deny<br /> + Allow from apache.org<br /> + Deny from foo.apache.org + </code></p></div> + + <p>On the other hand, if the <code class="directive">Order</code> in the + last example is changed to <code>Deny,Allow</code>, all hosts will + be allowed access. This happens because, regardless of the actual + ordering of the directives in the configuration file, the + <code>Allow from apache.org</code> will be evaluated last and will + override the <code>Deny from foo.apache.org</code>. All hosts not in + the <code>apache.org</code> domain will also be allowed access + because the default state is <code class="directive"><a href="#allow">Allow</a></code>.</p> + + <p>The presence of an <code class="directive">Order</code> directive can + affect access to a part of the server even in the absence of + accompanying <code class="directive"><a href="#allow">Allow</a></code> and + <code class="directive"><a href="#deny">Deny</a></code> directives because + of its effect on the default access state. For example,</p> + + <div class="example"><p><code> + <Directory /www><br /> + <span class="indent"> + Order Allow,Deny<br /> + </span> + </Directory> + </code></p></div> + + <p>will <code class="directive"><a href="#deny">Deny</a></code> all access + to the <code>/www</code> directory because the default access state + is set to <code class="directive"><a href="#deny">Deny</a></code>.</p> + + <p>The <code class="directive">Order</code> directive controls the order of + access directive processing only within each phase of the server's + configuration processing. This implies, for example, that an + <code class="directive"><a href="#allow">Allow</a></code> or <code class="directive"><a href="#deny">Deny</a></code> directive occurring in a + <code class="directive"><a href="../mod/core.html#location"><Location></a></code> section + will always be evaluated after an <code class="directive"><a href="#allow">Allow</a></code> or <code class="directive"><a href="#deny">Deny</a></code> directive occurring in a + <code class="directive"><a href="../mod/core.html#directory"><Directory></a></code> + section or <code>.htaccess</code> file, regardless of the setting of + the <code class="directive">Order</code> directive. For details on the + merging of configuration sections, see the documentation on <a href="../sections.html">How Directory, Location and Files sections + work</a>.</p> + +</div> +</div> +<div class="bottomlang"> +<p><span>Available Languages: </span><a href="../en/mod/mod_access.html" title="English"> en </a> | +<a href="../ja/mod/mod_access.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a></p> +</div><div id="footer"> +<p class="apache">Copyright 2009 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p> +<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="../faq/">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p></div> +</body></html>
\ No newline at end of file |