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16 <p class="apache">Apache HTTP Server Version 2.3</p>
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21 <div id="page-content">
22 <div id="preamble"><h1>Apache Module mod_ldap</h1>
24 <p><span>Available Languages: </span><a href="../en/mod/mod_ldap.html" title="English"> en </a></p>
26 <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>LDAP connection pooling and result caching services for use
27 by other LDAP modules</td></tr>
28 <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
29 <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>ldap_module</td></tr>
30 <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>util_ldap.c</td></tr>
31 <tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in version 2.0.41 and later</td></tr></table>
34 <p>This module was created to improve the performance of
35 websites relying on backend connections to LDAP servers. In
36 addition to the functions provided by the standard LDAP
37 libraries, this module adds an LDAP connection pool and an LDAP
38 shared memory cache.</p>
40 <p>To enable this module, LDAP support must be compiled into
41 apr-util. This is achieved by adding the <code>--with-ldap</code>
42 flag to the <code class="program"><a href="../programs/configure.html">configure</a></code> script when building
45 <p>SSL/TLS support is dependant on which LDAP toolkit has been
46 linked to <a class="glossarylink" href="../glossary.html#apr" title="see glossary">APR</a>. As of this writing, APR-util supports:
47 <a href="http://www.openldap.org/">OpenLDAP SDK</a> (2.x or later),
48 <a href="http://developer.novell.com/ndk/cldap.htm">Novell LDAP
49 SDK</a>, <a href="http://www.mozilla.org/directory/csdk.html">
50 Mozilla LDAP SDK</a>, native Solaris LDAP SDK (Mozilla based),
51 native Microsoft LDAP SDK, or the
52 <a href="http://www.iplanet.com/downloads/developer/">iPlanet
53 (Netscape)</a> SDK. See the <a href="http://apr.apache.org">APR</a>
54 website for details.</p>
57 <div id="quickview"><h3 class="directives">Directives</h3>
59 <li><img alt="" src="../images/down.gif" /> <a href="#ldapcacheentries">LDAPCacheEntries</a></li>
60 <li><img alt="" src="../images/down.gif" /> <a href="#ldapcachettl">LDAPCacheTTL</a></li>
61 <li><img alt="" src="../images/down.gif" /> <a href="#ldapconnectiontimeout">LDAPConnectionTimeout</a></li>
62 <li><img alt="" src="../images/down.gif" /> <a href="#ldapopcacheentries">LDAPOpCacheEntries</a></li>
63 <li><img alt="" src="../images/down.gif" /> <a href="#ldapopcachettl">LDAPOpCacheTTL</a></li>
64 <li><img alt="" src="../images/down.gif" /> <a href="#ldapsharedcachefile">LDAPSharedCacheFile</a></li>
65 <li><img alt="" src="../images/down.gif" /> <a href="#ldapsharedcachesize">LDAPSharedCacheSize</a></li>
66 <li><img alt="" src="../images/down.gif" /> <a href="#ldaptrustedclientcert">LDAPTrustedClientCert</a></li>
67 <li><img alt="" src="../images/down.gif" /> <a href="#ldaptrustedglobalcert">LDAPTrustedGlobalCert</a></li>
68 <li><img alt="" src="../images/down.gif" /> <a href="#ldaptrustedmode">LDAPTrustedMode</a></li>
69 <li><img alt="" src="../images/down.gif" /> <a href="#ldapverifyservercert">LDAPVerifyServerCert</a></li>
73 <li><img alt="" src="../images/down.gif" /> <a href="#exampleconfig">Example Configuration</a></li>
74 <li><img alt="" src="../images/down.gif" /> <a href="#pool">LDAP Connection Pool</a></li>
75 <li><img alt="" src="../images/down.gif" /> <a href="#cache">LDAP Cache</a></li>
76 <li><img alt="" src="../images/down.gif" /> <a href="#usingssltls">Using SSL/TLS</a></li>
77 <li><img alt="" src="../images/down.gif" /> <a href="#settingcerts">SSL/TLS Certificates</a></li>
79 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
81 <h2><a name="exampleconfig" id="exampleconfig">Example Configuration</a></h2>
82 <p>The following is an example configuration that uses
83 <code class="module"><a href="../mod/mod_ldap.html">mod_ldap</a></code> to increase the performance of HTTP Basic
84 authentication provided by <code class="module"><a href="../mod/mod_authnz_ldap.html">mod_authnz_ldap</a></code>.</p>
86 <div class="example"><p><code>
87 # Enable the LDAP connection pool and shared<br />
88 # memory cache. Enable the LDAP cache status<br />
89 # handler. Requires that mod_ldap and mod_authnz_ldap<br />
90 # be loaded. Change the "yourdomain.example.com" to<br />
91 # match your domain.<br />
93 LDAPSharedCacheSize 200000<br />
94 LDAPCacheEntries 1024<br />
95 LDAPCacheTTL 600<br />
96 LDAPOpCacheEntries 1024<br />
97 LDAPOpCacheTTL 600<br />
99 <Location /ldap-status><br />
100 <span class="indent">
101 SetHandler ldap-status<br />
102 Order deny,allow<br />
104 Allow from yourdomain.example.com<br />
105 AuthLDAPEnabled on<br />
106 AuthLDAPURL ldap://127.0.0.1/dc=example,dc=com?uid?one<br />
107 require valid-user<br />
111 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
112 <div class="section">
113 <h2><a name="pool" id="pool">LDAP Connection Pool</a></h2>
115 <p>LDAP connections are pooled from request to request. This
116 allows the LDAP server to remain connected and bound ready for
117 the next request, without the need to unbind/connect/rebind.
118 The performance advantages are similar to the effect of HTTP
121 <p>On a busy server it is possible that many requests will try
122 and access the same LDAP server connection simultaneously.
123 Where an LDAP connection is in use, Apache will create a new
124 connection alongside the original one. This ensures that the
125 connection pool does not become a bottleneck.</p>
127 <p>There is no need to manually enable connection pooling in
128 the Apache configuration. Any module using this module for
129 access to LDAP services will share the connection pool.</p>
130 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
131 <div class="section">
132 <h2><a name="cache" id="cache">LDAP Cache</a></h2>
134 <p>For improved performance, <code class="module"><a href="../mod/mod_ldap.html">mod_ldap</a></code> uses an aggressive
135 caching strategy to minimize the number of times that the LDAP
136 server must be contacted. Caching can easily double or triple
137 the throughput of Apache when it is serving pages protected
138 with mod_authnz_ldap. In addition, the load on the LDAP server
139 will be significantly decreased.</p>
141 <p><code class="module"><a href="../mod/mod_ldap.html">mod_ldap</a></code> supports two types of LDAP caching during
142 the search/bind phase with a <em>search/bind cache</em> and
143 during the compare phase with two <em>operation
144 caches</em>. Each LDAP URL that is used by the server has
145 its own set of these three caches.</p>
147 <h3><a name="search-bind" id="search-bind">The Search/Bind Cache</a></h3>
148 <p>The process of doing a search and then a bind is the
149 most time-consuming aspect of LDAP operation, especially if
150 the directory is large. The search/bind cache is used to
151 cache all searches that resulted in successful binds.
152 Negative results (<em>i.e.</em>, unsuccessful searches, or searches
153 that did not result in a successful bind) are not cached.
154 The rationale behind this decision is that connections with
155 invalid credentials are only a tiny percentage of the total
156 number of connections, so by not caching invalid
157 credentials, the size of the cache is reduced.</p>
159 <p><code class="module"><a href="../mod/mod_ldap.html">mod_ldap</a></code> stores the username, the DN
160 retrieved, the password used to bind, and the time of the bind
161 in the cache. Whenever a new connection is initiated with the
162 same username, <code class="module"><a href="../mod/mod_ldap.html">mod_ldap</a></code> compares the password
163 of the new connection with the password in the cache. If the
164 passwords match, and if the cached entry is not too old,
165 <code class="module"><a href="../mod/mod_ldap.html">mod_ldap</a></code> bypasses the search/bind phase.</p>
167 <p>The search and bind cache is controlled with the <code class="directive"><a href="#ldapcacheentries">LDAPCacheEntries</a></code> and <code class="directive"><a href="#ldapcachettl">LDAPCacheTTL</a></code> directives.</p>
170 <h3><a name="opcaches" id="opcaches">Operation Caches</a></h3>
171 <p>During attribute and distinguished name comparison
172 functions, <code class="module"><a href="../mod/mod_ldap.html">mod_ldap</a></code> uses two operation caches
173 to cache the compare operations. The first compare cache is
174 used to cache the results of compares done to test for LDAP
175 group membership. The second compare cache is used to cache
176 the results of comparisons done between distinguished
179 <p>The behavior of both of these caches is controlled with
180 the <code class="directive"><a href="#ldapopcacheentries">LDAPOpCacheEntries</a></code>
181 and <code class="directive"><a href="#ldapopcachettl">LDAPOpCacheTTL</a></code>
185 <h3><a name="monitoring" id="monitoring">Monitoring the Cache</a></h3>
186 <p><code class="module"><a href="../mod/mod_ldap.html">mod_ldap</a></code> has a content handler that allows
187 administrators to monitor the cache performance. The name of
188 the content handler is <code>ldap-status</code>, so the
189 following directives could be used to access the
190 <code class="module"><a href="../mod/mod_ldap.html">mod_ldap</a></code> cache information:</p>
192 <div class="example"><p><code>
193 <Location /server/cache-info><br />
194 <span class="indent">
195 SetHandler ldap-status<br />
200 <p>By fetching the URL <code>http://servername/cache-info</code>,
201 the administrator can get a status report of every cache that is used
202 by <code class="module"><a href="../mod/mod_ldap.html">mod_ldap</a></code> cache. Note that if Apache does not
203 support shared memory, then each <code class="program"><a href="../programs/httpd.html">httpd</a></code> instance has its
204 own cache, so reloading the URL will result in different
205 information each time, depending on which <code class="program"><a href="../programs/httpd.html">httpd</a></code>
206 instance processes the request.</p>
208 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
209 <div class="section">
210 <h2><a name="usingssltls" id="usingssltls">Using SSL/TLS</a></h2>
212 <p>The ability to create an SSL and TLS connections to an LDAP server
213 is defined by the directives <code class="directive"><a href="# ldaptrustedglobalcert">
214 LDAPTrustedGlobalCert</a></code>, <code class="directive"><a href="# ldaptrustedclientcert">
215 LDAPTrustedClientCert</a></code> and <code class="directive"><a href="# ldaptrustedmode">
216 LDAPTrustedMode</a></code>. These directives specify the CA and
217 optional client certificates to be used, as well as the type of
218 encryption to be used on the connection (none, SSL or TLS/STARTTLS).</p>
220 <div class="example"><p><code>
221 # Establish an SSL LDAP connection on port 636. Requires that <br />
222 # mod_ldap and mod_authnz_ldap be loaded. Change the <br />
223 # "yourdomain.example.com" to match your domain.<br />
225 LDAPTrustedGlobalCert CA_DER /certs/certfile.der<br />
227 <Location /ldap-status><br />
228 <span class="indent">
229 SetHandler ldap-status<br />
230 Order deny,allow<br />
232 Allow from yourdomain.example.com<br />
233 AuthLDAPEnabled on<br />
234 AuthLDAPURL ldaps://127.0.0.1/dc=example,dc=com?uid?one<br />
235 require valid-user<br />
240 <div class="example"><p><code>
241 # Establish a TLS LDAP connection on port 389. Requires that <br />
242 # mod_ldap and mod_authnz_ldap be loaded. Change the <br />
243 # "yourdomain.example.com" to match your domain.<br />
245 LDAPTrustedGlobalCert CA_DER /certs/certfile.der<br />
247 <Location /ldap-status><br />
248 <span class="indent">
249 SetHandler ldap-status<br />
250 Order deny,allow<br />
252 Allow from yourdomain.example.com<br />
253 AuthLDAPEnabled on<br />
255 AuthLDAPURL ldap://127.0.0.1/dc=example,dc=com?uid?one<br />
256 require valid-user<br />
261 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
262 <div class="section">
263 <h2><a name="settingcerts" id="settingcerts">SSL/TLS Certificates</a></h2>
265 <p>The different LDAP SDKs have widely different methods of setting
266 and handling both CA and client side certificates.</p>
268 <p>If you intend to use SSL or TLS, read this section CAREFULLY so as to
269 understand the differences between configurations on the different LDAP
270 toolkits supported.</p>
272 <h3><a name="settingcerts-netscape" id="settingcerts-netscape">Netscape/Mozilla/iPlanet SDK</a></h3>
273 <p>CA certificates are specified within a file called cert7.db.
274 The SDK will not talk to any LDAP server whose certificate was
275 not signed by a CA specified in this file. If
276 client certificates are required, an optional key3.db file may
277 be specified with an optional password. The secmod file can be
278 specified if required. These files are in the same format as
279 used by the Netscape Communicator or Mozilla web browsers. The easiest
280 way to obtain these files is to grab them from your browser
283 <p>Client certificates are specified per connection using the
284 LDAPTrustedClientCert directive by referring
285 to the certificate "nickname". An optional password may be
286 specified to unlock the certificate's private key.</p>
288 <p>The SDK supports SSL only. An attempt to use STARTTLS will cause
289 an error when an attempt is made to contact the LDAP server at
292 <div class="example"><p><code>
293 # Specify a Netscape CA certificate file<br />
294 LDAPTrustedGlobalCert CA_CERT7_DB /certs/cert7.db<br />
295 # Specify an optional key3.db file for client certificate support<br />
296 LDAPTrustedGlobalCert CERT_KEY3_DB /certs/key3.db<br />
297 # Specify the secmod file if required<br />
298 LDAPTrustedGlobalCert CA_SECMOD /certs/secmod<br />
299 <Location /ldap-status><br />
300 <span class="indent">
301 SetHandler ldap-status<br />
302 Order deny,allow<br />
304 Allow from yourdomain.example.com<br />
305 AuthLDAPEnabled on<br />
306 LDAPTrustedClientCert CERT_NICKNAME <nickname> [password]<br />
307 AuthLDAPURL ldaps://127.0.0.1/dc=example,dc=com?uid?one<br />
308 require valid-user<br />
315 <h3><a name="settingcerts-novell" id="settingcerts-novell">Novell SDK</a></h3>
317 <p>One or more CA certificates must be specified for the Novell
318 SDK to work correctly. These certificates can be specified as
319 binary DER or Base64 (PEM) encoded files.</p>
321 <p>Note: Client certificates are specified globally rather than per
322 connection, and so must be specified with the LDAPTrustedGlobalCert
323 directive as below. Trying to set client certificates via the
324 LDAPTrustedClientCert directive will cause an error to be logged
325 when an attempt is made to connect to the LDAP server..</p>
327 <p>The SDK supports both SSL and STARTTLS, set using the
328 LDAPTrustedMode parameter. If an ldaps:// URL is specified,
329 SSL mode is forced, override this directive.</p>
331 <div class="example"><p><code>
332 # Specify two CA certificate files<br />
333 LDAPTrustedGlobalCert CA_DER /certs/cacert1.der<br />
334 LDAPTrustedGlobalCert CA_BASE64 /certs/cacert2.pem<br />
335 # Specify a client certificate file and key<br />
336 LDAPTrustedGlobalCert CERT_BASE64 /certs/cert1.pem<br />
337 LDAPTrustedGlobalCert KEY_BASE64 /certs/key1.pem [password]<br />
338 # Do not use this directive, as it will throw an error<br />
339 #LDAPTrustedClientCert CERT_BASE64 /certs/cert1.pem<br />
344 <h3><a name="settingcerts-openldap" id="settingcerts-openldap">OpenLDAP SDK</a></h3>
346 <p>One or more CA certificates must be specified for the OpenLDAP
347 SDK to work correctly. These certificates can be specified as
348 binary DER or Base64 (PEM) encoded files.</p>
350 <p>Client certificates are specified per connection using the
351 LDAPTrustedClientCert directive.</p>
353 <p>The documentation for the SDK claims to support both SSL and
354 STARTTLS, however STARTTLS does not seem to work on all versions
355 of the SDK. The SSL/TLS mode can be set using the
356 LDAPTrustedMode parameter. If an ldaps:// URL is specified,
357 SSL mode is forced. The OpenLDAP documentation notes that SSL
358 (ldaps://) support has been deprecated to be replaced with TLS,
359 although the SSL functionality still works.</p>
361 <div class="example"><p><code>
362 # Specify two CA certificate files<br />
363 LDAPTrustedGlobalCert CA_DER /certs/cacert1.der<br />
364 LDAPTrustedGlobalCert CA_BASE64 /certs/cacert2.pem<br />
365 <Location /ldap-status><br />
366 <span class="indent">
367 SetHandler ldap-status<br />
368 Order deny,allow<br />
370 Allow from yourdomain.example.com<br />
371 AuthLDAPEnabled on<br />
372 LDAPTrustedClientCert CERT_BASE64 /certs/cert1.pem<br />
373 LDAPTrustedClientCert KEY_BASE64 /certs/key1.pem<br />
374 AuthLDAPURL ldaps://127.0.0.1/dc=example,dc=com?uid?one<br />
375 require valid-user<br />
382 <h3><a name="settingcerts-solaris" id="settingcerts-solaris">Solaris SDK</a></h3>
384 <p>SSL/TLS for the native Solaris LDAP libraries is not yet
385 supported. If required, install and use the OpenLDAP libraries
390 <h3><a name="settingcerts-microsoft" id="settingcerts-microsoft">Microsoft SDK</a></h3>
392 <p>SSL/TLS certificate configuration for the native Microsoft
393 LDAP libraries is done inside the system registry, and no
394 configuration directives are required.</p>
396 <p>Both SSL and TLS are supported by using the ldaps:// URL
397 format, or by using the LDAPTrustedMode directive accordingly.</p>
399 <p>Note: The status of support for client certificates is not yet known
400 for this toolkit.</p>
405 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
406 <div class="directive-section"><h2><a name="LDAPCacheEntries" id="LDAPCacheEntries">LDAPCacheEntries</a> <a name="ldapcacheentries" id="ldapcacheentries">Directive</a></h2>
407 <table class="directive">
408 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Maximum number of entries in the primary LDAP cache</td></tr>
409 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LDAPCacheEntries <var>number</var></code></td></tr>
410 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>LDAPCacheEntries 1024</code></td></tr>
411 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
412 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
413 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_ldap</td></tr>
415 <p>Specifies the maximum size of the primary LDAP cache. This
416 cache contains successful search/binds. Set it to 0 to turn off
417 search/bind caching. The default size is 1024 cached
421 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
422 <div class="directive-section"><h2><a name="LDAPCacheTTL" id="LDAPCacheTTL">LDAPCacheTTL</a> <a name="ldapcachettl" id="ldapcachettl">Directive</a></h2>
423 <table class="directive">
424 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Time that cached items remain valid</td></tr>
425 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LDAPCacheTTL <var>seconds</var></code></td></tr>
426 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>LDAPCacheTTL 600</code></td></tr>
427 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
428 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
429 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_ldap</td></tr>
431 <p>Specifies the time (in seconds) that an item in the
432 search/bind cache remains valid. The default is 600 seconds (10
436 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
437 <div class="directive-section"><h2><a name="LDAPConnectionTimeout" id="LDAPConnectionTimeout">LDAPConnectionTimeout</a> <a name="ldapconnectiontimeout" id="ldapconnectiontimeout">Directive</a></h2>
438 <table class="directive">
439 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Specifies the socket connection timeout in seconds</td></tr>
440 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LDAPConnectionTimeout <var>seconds</var></code></td></tr>
441 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
442 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
443 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_ldap</td></tr>
445 <p>Specifies the timeout value (in seconds) in which the module will
446 attempt to connect to the LDAP server. If a connection is not
447 successful with the timeout period, either an error will be
448 returned or the module will attempt to connect to a secondary LDAP
449 server if one is specified. The default is 10 seconds.</p>
452 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
453 <div class="directive-section"><h2><a name="LDAPOpCacheEntries" id="LDAPOpCacheEntries">LDAPOpCacheEntries</a> <a name="ldapopcacheentries" id="ldapopcacheentries">Directive</a></h2>
454 <table class="directive">
455 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Number of entries used to cache LDAP compare
457 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LDAPOpCacheEntries <var>number</var></code></td></tr>
458 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>LDAPOpCacheEntries 1024</code></td></tr>
459 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
460 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
461 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_ldap</td></tr>
463 <p>This specifies the number of entries <code class="module"><a href="../mod/mod_ldap.html">mod_ldap</a></code>
464 will use to cache LDAP compare operations. The default is 1024
465 entries. Setting it to 0 disables operation caching.</p>
468 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
469 <div class="directive-section"><h2><a name="LDAPOpCacheTTL" id="LDAPOpCacheTTL">LDAPOpCacheTTL</a> <a name="ldapopcachettl" id="ldapopcachettl">Directive</a></h2>
470 <table class="directive">
471 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Time that entries in the operation cache remain
473 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LDAPOpCacheTTL <var>seconds</var></code></td></tr>
474 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>LDAPOpCacheTTL 600</code></td></tr>
475 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
476 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
477 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_ldap</td></tr>
479 <p>Specifies the time (in seconds) that entries in the
480 operation cache remain valid. The default is 600 seconds.</p>
483 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
484 <div class="directive-section"><h2><a name="LDAPSharedCacheFile" id="LDAPSharedCacheFile">LDAPSharedCacheFile</a> <a name="ldapsharedcachefile" id="ldapsharedcachefile">Directive</a></h2>
485 <table class="directive">
486 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the shared memory cache file</td></tr>
487 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LDAPSharedCacheFile <var>directory-path/filename</var></code></td></tr>
488 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
489 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
490 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_ldap</td></tr>
492 <p>Specifies the directory path and file name of the shared memory
493 cache file. If not set, anonymous shared memory will be used if the
494 platform supports it.</p>
497 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
498 <div class="directive-section"><h2><a name="LDAPSharedCacheSize" id="LDAPSharedCacheSize">LDAPSharedCacheSize</a> <a name="ldapsharedcachesize" id="ldapsharedcachesize">Directive</a></h2>
499 <table class="directive">
500 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Size in bytes of the shared-memory cache</td></tr>
501 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LDAPSharedCacheSize <var>bytes</var></code></td></tr>
502 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>LDAPSharedCacheSize 102400</code></td></tr>
503 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
504 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
505 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_ldap</td></tr>
507 <p>Specifies the number of bytes to allocate for the shared
508 memory cache. The default is 100kb. If set to 0, shared memory
509 caching will not be used.</p>
512 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
513 <div class="directive-section"><h2><a name="LDAPTrustedClientCert" id="LDAPTrustedClientCert">LDAPTrustedClientCert</a> <a name="ldaptrustedclientcert" id="ldaptrustedclientcert">Directive</a></h2>
514 <table class="directive">
515 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the file containing or nickname referring to a per
516 connection client certificate. Not all LDAP toolkits support per
517 connection client certificates.</td></tr>
518 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LDAPTrustedClientCert <var>type</var> <var>directory-path/filename/nickname</var> <var>[password]</var></code></td></tr>
519 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
520 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
521 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_ldap</td></tr>
523 <p>It specifies the directory path, file name or nickname of a
524 per connection client certificate used when establishing an SSL
525 or TLS connection to an LDAP server. Different locations or
526 directories may have their own independant client certificate
527 settings. Some LDAP toolkits (notably Novell)
528 do not support per connection client certificates, and will throw an
529 error on LDAP server connection if you try to use this directive
530 (Use the LDAPTrustedGlobalCert directive instead for Novell client
531 certificates - See the SSL/TLS certificate guide above for details).
532 The type specifies the kind of certificate parameter being
533 set, depending on the LDAP toolkit being used. Supported types are:</p>
535 <li>CERT_DER - binary DER encoded client certificate</li>
536 <li>CERT_BASE64 - PEM encoded client certificate</li>
537 <li>CERT_NICKNAME - Client certificate "nickname" (Netscape SDK)</li>
538 <li>KEY_DER - binary DER encoded private key</li>
539 <li>KEY_BASE64 - PEM encoded private key</li>
543 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
544 <div class="directive-section"><h2><a name="LDAPTrustedGlobalCert" id="LDAPTrustedGlobalCert">LDAPTrustedGlobalCert</a> <a name="ldaptrustedglobalcert" id="ldaptrustedglobalcert">Directive</a></h2>
545 <table class="directive">
546 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the file or database containing global trusted
547 Certificate Authority or global client certificates</td></tr>
548 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LDAPTrustedGlobalCert <var>type</var> <var>directory-path/filename</var> <var>[password]</var></code></td></tr>
549 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
550 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
551 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_ldap</td></tr>
553 <p>It specifies the directory path and file name of the trusted CA
554 certificates and/or system wide client certificates <code class="module"><a href="../mod/mod_ldap.html">mod_ldap</a></code>
555 should use when establishing an SSL or TLS connection to an LDAP
556 server. Note that all certificate information specified using this directive
557 is applied globally to the entire server installation. Some LDAP toolkits
558 (notably Novell) require all client certificates to be set globally using
559 this directive. Most other toolkits require clients certificates to be set
560 per Directory or per Location using LDAPTrustedClientCert. If you get this
561 wrong, an error may be logged when an attempt is made to contact the LDAP
562 server, or the connection may silently fail (See the SSL/TLS certificate
563 guide above for details).
564 The type specifies the kind of certificate parameter being
565 set, depending on the LDAP toolkit being used. Supported types are:</p>
567 <li>CA_DER - binary DER encoded CA certificate</li>
568 <li>CA_BASE64 - PEM encoded CA certificate</li>
569 <li>CA_CERT7_DB - Netscape cert7.db CA certificate database file</li>
570 <li>CA_SECMOD - Netscape secmod database file</li>
571 <li>CERT_DER - binary DER encoded client certificate</li>
572 <li>CERT_BASE64 - PEM encoded client certificate</li>
573 <li>CERT_KEY3_DB - Netscape key3.db client certificate database file</li>
574 <li>CERT_NICKNAME - Client certificate "nickname" (Netscape SDK)</li>
575 <li>CERT_PFX - PKCS#12 encoded client certificate (Novell SDK)</li>
576 <li>KEY_DER - binary DER encoded private key</li>
577 <li>KEY_BASE64 - PEM encoded private key</li>
578 <li>KEY_PFX - PKCS#12 encoded private key (Novell SDK)</li>
582 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
583 <div class="directive-section"><h2><a name="LDAPTrustedMode" id="LDAPTrustedMode">LDAPTrustedMode</a> <a name="ldaptrustedmode" id="ldaptrustedmode">Directive</a></h2>
584 <table class="directive">
585 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Specifies the SSL/TLS mode to be used when connecting to an LDAP server.</td></tr>
586 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LDAPTrustedMode <var>type</var></code></td></tr>
587 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
588 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
589 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_ldap</td></tr>
591 <p>The following modes are supported:</p>
593 <li>NONE - no encryption</li>
594 <li>SSL - ldaps:// encryption on default port 636</li>
595 <li>TLS - STARTTLS encryption on default port 389</li>
598 <p>Not all LDAP toolkits support all the above modes. An error message
599 will be logged at runtime if a mode is not supported, and the
600 connection to the LDAP server will fail.
603 <p>If an ldaps:// URL is specified, the mode becomes SSL and the setting
604 of LDAPTrustedMode is ignored.</p>
607 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
608 <div class="directive-section"><h2><a name="LDAPVerifyServerCert" id="LDAPVerifyServerCert">LDAPVerifyServerCert</a> <a name="ldapverifyservercert" id="ldapverifyservercert">Directive</a></h2>
609 <table class="directive">
610 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Force server certificate verification</td></tr>
611 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LDAPVerifyServerCert <var>On|Off</var></code></td></tr>
612 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>LDAPVerifyServerCert On</code></td></tr>
613 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
614 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
615 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_ldap</td></tr>
617 <p>Specifies whether to force the verification of a
618 server certificate when establishing an SSL connection to the
623 <div class="bottomlang">
624 <p><span>Available Languages: </span><a href="../en/mod/mod_ldap.html" title="English"> en </a></p>
625 </div><div id="footer">
626 <p class="apache">Copyright 1995-2006 The Apache Software Foundation or its licensors, as applicable.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
627 <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>