# Unable to Setup Ldap Authentication in Jenkins **URL:** \ **Category:** Ask a question\ **Tags:** question, meeting\ **Created:** [June 19, 2024, 6:10pm UTC](https://community.jenkins.io/t/unable-to-setup-ldap-authentication-in-jenkins/16129 "2024-06-19T18:10:40Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Ravi1](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@Ravi1](https://community.jenkins.io/u/Ravi1)\ **Post date:** [June 19, 2024, 6:10pm UTC](https://community.jenkins.io/t/unable-to-setup-ldap-authentication-in-jenkins/16129/1 "2024-06-19T18:10:40Z")
Hi Jenkins Community, I’m trying to setup Ldap authentication in my Jenkins, however after passing the required details and tried to test ldap settings, its says connection timed out, also i have set the authorization strategy to ‘Anyone can do anything’, please see the error below and advise further. ![image](https://europe1.discourse-cdn.com/flex013/uploads/jenkins/original/2X/0/048e0e507a3b280c9d7a62230870e2572a260977.png) **Error Logs:** java.net.ConnectException: Connection timed out at java.base/sun.nio.ch.Net.connect0(Native Method) at java.base/sun.nio.ch.Net.connect(Net.java:579) at java.base/sun.nio.ch.Net.connect(Net.java:568) at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593) at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327) at java.base/java.net.Socket.connect(Socket.java:633) at java.base/java.net.Socket.connect(Socket.java:583) at java.base/java.net.Socket.(Socket.java:507) at java.base/java.net.Socket.(Socket.java:319) at jenkins.security.plugins.ldap.LDAPConfiguration$LDAPConfigurationDescriptor.doCheckServer(LDAPConfiguration.java:445) at java.base/java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:732) at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:397) at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:409) at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:207) at org.kohsuke.stapler.SelectionInterceptedFunction$Adapter.invoke(SelectionInterceptedFunction.java:36) at org.kohsuke.stapler.verb.HttpVerbInterceptor.invoke(HttpVerbInterceptor.java:48) at org.kohsuke.stapler.SelectionInterceptedFunction.bindAndInvoke(SelectionInterceptedFunction.java:26) at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:140) at org.kohsuke.stapler.MetaClass$11.doDispatch(MetaClass.java:558) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:59) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:770) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:900) at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:289) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:59) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:770) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:900) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:836) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:900) at org.kohsuke.stapler.MetaClass$9.dispatch(MetaClass.java:475) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:770) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:900) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:698) at org.kohsuke.stapler.Stapler.service(Stapler.java:248) at javax.servlet.http.HttpServlet.service(HttpServlet.java:590) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:764) at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1665) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:163) at org.jenkinsci.plugins.ssegateway.Endpoint$SSEListenChannelFilter.doFilter(Endpoint.java:248) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:160) at io.jenkins.blueocean.ResourceCacheControl.doFilter(ResourceCacheControl.java:134) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:160) at io.jenkins.blueocean.auth.jwt.impl.JwtAuthenticationFilter.doFilter(JwtAuthenticationFilter.java:60) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:160) at org.jenkinsci.plugins.modernstatus.ModernStatusFilter.doFilter(ModernStatusFilter.java:50) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:160) at jenkins.util.HttpServletFilter$1.doFilter(HttpServletFilter.java:76) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:160) at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:166) at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202) at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635) at jenkins.ErrorAttributeFilter.doFilter(ErrorAttributeFilter.java:29) at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202) at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635) at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:154) at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202) at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:94) at jenkins.security.AcegiSecurityExceptionFilter.doFilter(AcegiSecurityExceptionFilter.java:52) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99) at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:54) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99) at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:126) at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:120) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99) at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99) at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:110) at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:101) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99) at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:227) at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:221) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99) at jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:97) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99) at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:117) at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:63) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99) at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:111) at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:172) at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202) at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635) at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:53) at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202) at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635) at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:86) at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202) at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635) at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30) at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202) at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635) at jenkins.security.SuspiciousRequestFilter.doFilter(SuspiciousRequestFilter.java:38) at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202) at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:527) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:131) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:569) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:223) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1570) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1384) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:484) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1543) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1306) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129) at org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:46) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122) at org.eclipse.jetty.server.Server.handle(Server.java:563) at org.eclipse.jetty.server.HttpChannel$RequestDispatchable.dispatch(HttpChannel.java:1598) at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:753) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:501) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:287) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:314) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100) at org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.onFillable(SslConnection.java:558) at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:379) at org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:146) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100) at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:421) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:390) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:277) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:199) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:411) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:969) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1194) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1149) at java.base/java.lang.Thread.run(Thread.java:840) Warm regards, Ravi ---
**Author:** ![altif](https://dub1.discourse-cdn.com/flex013/user_avatar/community.jenkins.io/altif/32/8519_2.png) [@altif](https://community.jenkins.io/u/altif)\ **Post date:** [June 20, 2024, 12:55pm UTC](https://community.jenkins.io/t/unable-to-setup-ldap-authentication-in-jenkins/16129/2 "2024-06-20T12:55:14Z")
@Ravi1 Please see the below steps to troubleshoot the ldap issue: **1. Verify LDAP Server Address and Port** - Ensure the URL `ldaps://:1636` is correct. **2. Network Connectivity** - Check if Jenkins can reach the LDAP server using `curl` or `telnet` or `nc`: ```bash curl --insecure -v ldaps://:1636 ``` Replace with the actual hostname or IP address of your LDAP server. or ```bash telnet 1636 ``` or ```bash nc -zv 1636 ``` **3. SSL/TLS Configuration** - Import the LDAP server’s certificate into the Java keystore on Jenkins: ```bash keytool -import -alias ldapserver -file ldapservercert.pem -keystore /path/to/keystore ``` Replace `/path/to/keystore` with the path to the Java keystore used by Jenkins, often located at `$JAVA_HOME/lib/security/cacerts`. **4. Test with Non-Secure LDAP** - Temporarily switch to `ldap://` to check if SSL/TLS is the issue. Use the “Test LDAP Settings” button to verify the connection. Hope this helps! ---
**Author:** ![jenkiniano](https://avatars.discourse-cdn.com/v4/letter/j/dec6dc/32.png) [@jenkiniano](https://community.jenkins.io/u/jenkiniano)\ **Post date:** [October 30, 2024, 3:50pm UTC](https://community.jenkins.io/t/unable-to-setup-ldap-authentication-in-jenkins/16129/3 "2024-10-30T15:50:14Z")
Hi. I am trying to configure ldaps (ldap works). When I try to login I obtain: Caused: org.springframework.ldap.PartialResultException: nested exception is javax.naming.PartialResultException [Root exception is javax.naming.CommunicationException: DomainDnsZones.mydomain.local:636 [Root exception is javax.net.ssl.SSLHandshakeException: No subject alternative DNS name matching DomainDnsZones.mydomain.local found.]] How could I solve? Thanks a lot Mario ---
**Author:** ![poddingue](https://dub1.discourse-cdn.com/flex013/user_avatar/community.jenkins.io/poddingue/32/985_2.png) [@poddingue](https://community.jenkins.io/u/poddingue)\ **Post date:** [October 31, 2024, 9:21am UTC](https://community.jenkins.io/t/unable-to-setup-ldap-authentication-in-jenkins/16129/4 "2024-10-31T09:21:19Z")
Hi, To me, it looks like the error you’re encountering indicates that the SSL certificate used by your LDAP server does not have a Subject Alternative Name (SAN) that matches `DomainDnsZones.mydomain.local`. 🤔