Connect and share knowledge within a single location that is structured and easy to search. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. In order to connect to an ldap server via ssl I needed to use a certificate. (userAccountControl:1.2.840.113556.1.4.803:=2)))BaseDN = DC=local,DC=test,DC=mxRootDN = CN=Administrador,CN=Users,DC=local,DC=test,DC=mxPassword = *****Login Field = samaccountnameUse TLS = No, When test connection: "Test of Main Server myldap Succesfull. Could not bind to LDAP: (-1) Can't contact LDAP server when trying to Find centralized, trusted content and collaborate around the technologies you use most. I added the CA to the trust store aswell. Otherwise debugging just becomes a guessing game. Php ldap error: Can't contact LDAP server. (PS: I tried the configuration from this issue). can you contact the ldap server from the machine running php? I think your filter on your search is invalid, at least that's the error I get when I screw up my filter. I have an Oracle database that I connect to from apache. When I temporarily disabled SELinux, the ldap test script worked fine in a browser. Are you able to connect from the BookStack system to the LDAPS server via another tool, Like directly on the command line? Is there any evidence suggesting or refuting that Russian officials knowingly lied that Russia was not going to attack Ukraine? As I said, if I change for LDAP on port 389, everything works like a charm. In July 2022, did China have more nuclear weapons than Domino's Pizza locations? LDAP over TLS: Unable to bind to server: Can't contact LDAP server Is there any philosophical theory behind the concept of object in computer science? PHP LDAP Connection Can't Contact LDAP Server. If ldap_bind fails, use the command ldap_errno to get the error number. Since there's not been any further recent activity on this I'll close it off. This will turn off certificate validation by openldap, You can also use self-signed certs with validation by adding TLS_CACERT directive with path to domain ca cert file (requires system reboot) like this: In the httpd.conf file I have enabled two modules: LoadModule authnz_ldap_module modules / mod_authnz_ldap.soLoadModule ldap_module modules / mod_ldap.so, LDAPTrustedGlobalCert CA_BASE64 "C:\openldap\sysconfig\server-ca.cer". Asking for help, clarification, or responding to other answers. The PHP/LDAP setup tutorials I've looked at work with EL6, and I am running EL7. The text was updated successfully, but these errors were encountered: @joaomezzari Is the certificate self-signed? Anything in your main PHP logs - sorry should have been clearer that the LDAP debug should give you output to PHP logs not the application logs. Thanks for contributing an answer to Stack Overflow! Here we learn: SELinux doesn't allow your httpd daemon to talk to the LDAP Thanks to all that have provided their thoughts and/or findings. How does the number of CMB photons vary with time? This is very useful for failover; if the first ldap host is down, ldap_connect will ask the second LDAP host. Have a question about this project? You can post the ticket number here so we can update this thread with the outcome. Disclaimer: All information is provided \"AS IS\" without warranty of any kind. After disabling CageFS for my cPanel user, the test script works. As mentioned above, openLDAP will always return a resource, even if the server name isn't valid. I use other applications with LDAPS aswell. I already have this in my file: TLS_CACERT /etc/openldap/certs/domain.crt I didn't add the cert to the trust store this time, but I edited the .env and added the LDAP_TLS_INSECURE=true parameter just in case, but seems that it's not working @MikeyMJCO Hey, just checking if you were able to reproduce the possible issue in your environment. When locally tested, everything worked fine. Could not bind to LDAP: (-1) Can't contact LDAP server when trying to switch to LDAPS 10 comments 1 year ago D3s3ertf0x When I am trying to switch to LDAPS using "port" : "637", "enctype": "ssl", I am getting: the next calls to ldap_* functions, usually with unsure if this qualifies as strictly an "ldap" technical question, or PHP, but my PHP code keeps generating error: Warning: ldap_search() [function.ldap-search]: Search: Can't contact LDAP server in [path and file name here], bool(false) [var_dump function gives the bool(false). You are responsible for your own actions. Rationale for sending manned mission to another star? You can adjust your cookie settings, otherwise we'll assume you're okay to continue. does a known good tool sich als ldapsearch does return the results you want? Ah. Hello ,i dont know about SSL port , but default Port for LDAP is 389. php - ldap_bind(): Unable to bind to server: Can't contact LDAP server I could be wrong tho. By clicking Sign up for GitHub, you agree to our terms of service and It's a syntactic check of the provided parameter but the server(s) will not Error Code: [-1" when I run php artisan ldap:test , can you help me how I can fix this bug knowing that I'm using xammp , thanks a lot dcparhamJune 29, 2009 in PHP Coding Help, Php ldap error: Can't contact LDAP server. ldaps://server.example.com : Can't contact LDAP server ldap://server.example.com : Can't contact LDAP server" Ensure that the server is available at the configured address and, if the server address is specified by domain name or FQDN, ensure that DNS records exist and resolve to the correct address. On which OS is your GLPI Server ? "CN=serviceaccount,OU=Services,DC=example,DC=com" -x -w "sapass" -LLL LDAP_USER_FILTER=(&(objectCategory=Person)(sAMAccountName=${user})) update-ca-trust extract. Re: Openldap and ldapadmin: Can't contact LDAP server (-1) for user. I changed the domain name into IP address and connection can be made. I'll try to record video proof. 12/27 01:31:44 [LOGON] [1904] domain: SamLogon: Network logon of example\bookstack from DC01 Entered That led me to this helpful answer and this CentOS Wiki on SELinux. If the error number is 81, that represents the server is down. error: pathspec 'ldaps_1922' did not match any file(s) known to git. In Germany, does an academic position after PhD have an age limit? @llawwehttam and @joaomezzari I had the same problem but i have found a bug reported (https://gist.github.com/aderixon/01ee459155a5f51264cb0f029c4b6f87) in the version of PHP used in the script for installing BookStackApp that cause intermittent problems with PHP LDAP against a TLS connection using a self-signed server certificate. Restore formatting, Sometimes I've got error: ldap_bind(): Unable to bind to server: Can't contact LDAP server. high low [2019-10-16 09:35 UTC] boris at brdaric dot com Description: ------------ Hello, we are observing unexpected behaviour with ldap_search () function from PHP-LDAP extension. This function does not open a connection. I would expect it to be php-fpm.log - the numbered versions are the old logs. Browse over to. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Are there any log entries in the DC's auth log that indicate authentication failure? 1 Environment: LDAP Server Type: ActiveDirectory LdapRecord-Laravel Major Version: v2.5 PHP Version: 8.0 I'm using ldaprecord and I'm getting "ldap_bind (): Unable to bind to server: Can't contact LDAP server. Have you configured the certificate etc for LDAPS on your Domain Controller? Successfully merging a pull request may close this issue. PHP Warning: ldap_bind(): Unable to bind to server: Can't contact LDAP Usually there is at least one Global Catalog server in your domain, so if the connect fails try another server it will work. PHP :: Bug #78676 :: ldap_search() Can't contact LDAP server if user Display as a link instead, Haven't been able to reproduce this despite trying a couple of times. If I temporarily add this to /etc/openldap/ldap.conf, the script works: Once I comment that out, the script fails with "Can't contact LDAP server". Not sure I'm actually checking the correct file, but php7.4-fpm.log.1 on /var/log has nothing about ldap. It seems that this error will occur if at least one of the following ciphers are not enabled: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 Debian ?I had same error on debian 7/8. 49 comments . You should certainly set the options before doing the connect. Using Ubuntu 16.04, installed BookStack using the install script. And I remind you again: the issue reproduce only with ldaps://. I found some difference between php7.0 and php5.5 on this function, //explicitly close open socket connection, //DC is up & running, we can safely connect with ldap_connect, // ##### STATIC DC LIST, if your DNS round robin is not setup, //after this loop, either there will be at least one DC which is available at present, or $dc would return bool false while the next line stops program from further execution. Already on GitHub? How to correctly use LazySubsets from Wolfram's Lazy package? php - ldap_bind() fails with "Can't contact LDAP server" - Stack Overflow Did an AI-enabled drone attack the human operator in a simulation environment? and use setsebool -P to enable it if it's not. What does it mean, "Vine strike's still loose"? return a LDAP\Connection instance as it does not actually connect but just replacing <host> and <port> with the hostname and the port the server is supposed to listen on. Otherwise Active Directory provides a mostly readonly connection. Invocation of Polski Package Sometimes Produces Strange Hyphenation. Is there a faster algorithm for max(ctz(x), ctz(y))? Ah, Damn. [SOLVED] Unable to start TLS: Can't contact LDAP server - GLPI Project APP_DEBUG=true. LDAP_DISPLAY_NAME_ATTRIBUTE=cn Does the policy change for AI-generated content affect users who (want to) php ldap_bind returns error however ldapsearch console command works as exprected, LDAP works with PHP CLI but not through apache, PHP Warning: ldap_bind(): Unable to bind to server: Can't contact LDAP server, Can't contact LDAP server on ldap_bind($con, $rdn, $pwd). Why does bunched up aluminum foil become so extremely hard to compress? Please note there is a difference between ldaps and start-TLS for ldap. In my configuration only DN works. DevOps & SysAdmins: PHP Warning: ldap_bind(): Unable to bind to server: Can't contact LDAP server inHelpful? I personally haven't run in to this issue with our AD infrastructure (2012R2/2016). Though you must be sure that the server you're authenticating/searching is a Global Catalog server. Minimize is returning unevaluated for a simple positive integer domain problem. does a known good tool sich als ldapsearch does return the results you want? Pasted as rich text. This is particularly useful with a typical Microsoft Active Directory setup of primary and backup domain controllers. Using admin credentials is not necessary and secure. Just to ensure that port isn't blocked somewhere for all? The reason it works is that the Global Catalog server searches the whole domain as where the domain catalog only searches a given OU, offcourse this opposes a security threat as well :) A resource ID is always returned when using URLs for the host parameter. I'm fairly new to LDAP though, so is there anyone who can help me out here? privacy statement. Semantics of the `:` (colon) function in Bash when used in a pipe? to your .env which opens BookStack to allow un-trusted certificates. Seems like BookStack is the case? What do the characters on this CCTV lens mean? . PHP expects the ldap.conf file to be in the root filesystem where the Webserver Document root is installed (for instance C . I have found the answers.. // note: $ds is always a resource even if primary is down, // test passed, unbind anonymous and reconnect to primary. This thread is more than a year old. Looks like the log is empty tbh. The actual connect happens with // assuming the LDAP server is on this host, // bind with appropriate dn to give update access. privacy statement. production.ERROR: ldap_bind(): Unable to bind to server: Can't contact LDAP server {"exception":"[object] (ErrorException(code: 0): ldap_bind(): Unable to bind to server: Can't contact LDAP server at /var/www/bookstack/app/Auth/Access/Ldap.php:93). I changed the domain name into IP address and connection can be made. Well occasionally send you account related emails. You cannot paste images directly. The difference is: @Mant1kor Already tried with the TLS_REQCERT never answell, same error that it can't contact the ldap server. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Why is Bb8 better than Bc7 in this position? LDAP_DN=bookstack.connector@domain It's not critical, I'll use ldap:// to avoid the problem. The ldap server is an eDirectory. Asking for help, clarification, or responding to other answers. If you don't mind "tinkering under the hood" adding ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, 7); before return ldap_connect($hostName, $port); in ldap.php might give you a more verbose PHP/LDAP debug error to go off. I get this error: Already added the CA to the trust store on the server. Of course, you _must_ have LDAP replicates before doing this. What's the idea of Dirichlets Theorem on Arithmetic Progressions proof? Sign in //test to ensure the certificate is able to be read and path is right. I could easily connect and bind to the LDAP server through following code: I'm guessing this is due to wrong configuration server-side. I have disable logging with nltest /dbflag:0x0 and it still works. To learn more, see our tips on writing great answers. Powered by Invision Community. :) Read the LDAP API documentation for more information. can you contact the ldap server from the machine running php? You signed in with another tab or window. You don't use encryption. just moved CA certificate (b64 encoded) from. If selinux is enabled and enforcing, check if the correct boolean is enabled. Is there a legal reason that organizations often refuse to comment on an issue citing "ongoing litigation"? If you don't want your PHP program to wait XXX seconds before giving up in a case when one of your corporate DC have failed, and since ldap_connect() does not have a mechanism to timeout on a user specified time, this is my workaround which shows excellent practical results. Code: Select all. Change your filter to a variable and do something like this: Lol, just need to replace the last name with something real. Yes, otherwise, it wouldn't work. 576), AI/ML Tool examples part 3 - Title-Drafting Assistant, We are graduating the updated button styling for vote arrows. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Note: Return Values Returns an LDAP\Connection instance when the provided LDAP URI seems plausible. My codes are below: I always get "Can't contact LDAP server" error message. In my environment the cipher suite has not been changed on the DC in any way. In July 2022, did China have more nuclear weapons than Domino's Pizza locations? I have an odd issue where my root user can connect to an external LDAP server, but a normal cPanel user cannot. In my case, SELinux was configured out of the box to disallow LDAP connectivity (even though ldaps is enabled in firewalld). "LDAPTLS_CACERT=C:\\Program Files\\php\\certs\\rootca.pem". If you are unsure, you are best to either use Wireshark to see if it is negotiating a TLSv1 session, as well as checking the event viewer for schannel related issues. Test ldapsearch with TLS is ok ldapsearch -H ldap://xxxx -x -ZZ /etc/pki/tls/certs/xxxx.pem -D 'xxxxx' -w 'xxxx' -b 'cn=xxx,cn=users,dc=xxx,dc=xxxx' But ldap_bind won't find ldap server. to your account, Describe the bug Creates an LDAP\Connection connection and checks whether the given Same problem as OP - ldap would work with the binary php, but not through Apache. Making statements based on opinion; back them up with references or personal experience. Cartoon series about a world-saving agent, who is an Indiana Jones and James Bond mixture. You must log in or register to reply here. Oracle also has ldap libs which were taking precedence over the openldap libs. Despite enabling trust my personal CA, I still encountered this issue. That works too, some apps actually only support this. 12/27 01:31:44 [LOGON] [1904] domain: SamLogon: Network logon of example\bookstack from DC01 Returns 0x0, Source how to enable debugging: What are the concerns with residents building lean-to's up against city fortifications? Where is crontab's time command documented? Enabling a user to revert a hacked change in their email. rev2023.6.2.43474. Thanks for contributing an answer to Stack Overflow! PHP Warning: ldap_bind(): Unable to bind to server: Can't contact LDAP ], it appears to connect using ID/PW just fine[altering it makes it fail]. // make sure your host is the correct one. Is it possible for rockets to exist in a world that is only in the early stages of developing jet aircraft? by TrevorH Mon Dec 26, 2016 4:45 pm. Well occasionally send you account related emails. To override the ssl ca file can be done by setting an environmental variable within php. Just tested the connection from the server to be sure and it's ok aswell. It's strange, but I can't reproduce the problem any more. PHP: ldap_start_tls - Manual LDAP authentication when using LDAPS is not working. - heiglandreas. Interesting. for providing its computer LDAP_EMAIL_ATTRIBUTE=mail For me, it only works with the UPN. @Duan-fei compatibility (except for using named parameters), but is considered deprecated and should not be used anymore! In my case, SELinux was configured out of the box to disallow LDAP connectivity (even though ldaps is enabled in firewalld). What's the idea of Dirichlets Theorem on Arithmetic Progressions proof? @joaomezzari Oh, sorry, I misread this. Symfony\Component\Debug\Exception\FatalThrowableError rather than "Gaudeamus igitur, *dum iuvenes* sumus!"? As above, be sure to remove TLS_REQCERT never from your /etc/openldap/ldap.conf and of course set SELinux back to Enforcing with setenforce 1. Unable to bind to server: Can't contact LDAP server What OS is BookStack running on? well, guess what - i changed the code to this: and for a brief few refreshes, gave a msg like "protocol resource(4)", *soooomething* like that, but not the same old error. LDAP bind error accessing AD: Can't contact LDAP server, PHP LDAP Connection Can't Contact LDAP Server, Bitnami LDAP - PHP Error: ldap_bind(): Unable to bind to server: Invalid credentials. How to say They came, they saw, they conquered in Latin? LDAP_USER_FILTER=(&(sAMAccountName=${user})) LDAP_VERSION=3 Is your file LdapProvider.php? PHP: ldap_connect - Manual A full LDAP URI of the form ldap://hostname:port Find centralized, trusted content and collaborate around the technologies you use most. This will turn off certificate validation by openldap, You can also use self-signed certs with validation by adding TLS_CACERT directive with path to domain ca cert file (requires system reboot) like this: As above, be sure to set SELinux back to Enforcing with setenforce 1 if you temporarily disabled it to test. JavaScript is disabled. I'm 100% sure about this. It bears repeating (and the examples should probably be updated) that ldap_connect() doesn't actually test the connection to the specified ldap server. Is there a place where adultery is a crime? Note that hostname can be a space-separated list of LDAP host names. We have a root certificate for the domain. Semantics of the `:` (colon) function in Bash when used in a pipe? Please contact me if anything is amiss at Roel D.OT VandePaar A.T gmail.com be contacted! cp cafile.pem /etc/pki/ca-trust/source/anchors/. What distro do you use? Did you get the same error "Can't contact LDAP server"? cPanel, WebHost Manager and WHM are registered trademarks of cPanel, L.L.C. Apr 15, 2014 at 5:07. There will be a delay while the code times out trying to talk to the main server but things will still work. I seemingly take forever to make use of ldap_start_tls work. Php ldap error: Can't contact LDAP server Connection errors: TLS certificate issues If anyone is still experiencing issues it's work updating to the latest release as you may find your issue has been fixed. Moving to PHP, I'm attempting to bind to the same server using the same credentials and pass (sapass) above. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. ie. Posted June 29, 2009. LDAP_ID_ATTRIBUTE=BIN;objectGUID Regulations regarding taking off across the runway. I'm able to query the remote ldaps server using ldapsearch: ldapsearch -H ldaps://ldap.example.com -D "CN=serviceaccount,OU=Services,DC=example,DC=com" -x -w "sapass" -LLL -b "DC=example,DC=com" cn="acoder" This returns expected data on user acoder. To complete questions about how to connect to a LDAP ACTIVE DIRECTORY 2000/2003 server with SASL on port 636, you can refer to prevous notes, and the following directives: Implementing LDAPS on a WISP stack - Win, IIS, SQL, PHP, //tell ldap where the root ca certificate is, 'LDAPTLS_CACERT=C:\\Program Files\\php\\certs\\rootca.pem'. DevOps \u0026 SysAdmins: PHP Warning: ldap_bind(): Unable to bind to server: Can't contact LDAP server inHelpful? opened connection will be returned. "Can't contact LDAP server (-1)" error for LDAPS to Server 2012 Is there a reason beyond protection from potential corruption to restrict a minister's ability to personally relieve and appoint civil servants? Just to confirm is this a new BookStack/Ldap setup you're experiencing this on or are you just experiencing this after performing an update? To use LDAPS on Windows whitout "c:\openldap\sysconf\ldap.conf": The host name parameter can be a space separated list of host names. LDAP configs: AUTH_METHOD=ldap This would cause a seg fault when calling ldap_connect with a uri style connect string; e.g. php ldap_bind Can't contact LDAP server | cPanel Forums SELinux is running Enforced. For this to work the ldap admin sent me a .der file which I put into /etc/openldap/cacerts. start-TLS uses port 389, while ldaps uses port 636. ldaps has been deprecated in favour of start-TLS for ldap. This is important if you're trying to build failover into your ldap-based authentication routine. check if you are authorized to connect to your ldap server from your local. It's a syntactic check of the provided parameter but the server (s) will not be contacted! Making statements based on opinion; back them up with references or personal experience. I have spent a lot of time to make an LDAPS connection to a MS AD Global Catalog port 3269. Trademarks are property of their respective owners. To learn more, see our tips on writing great answers. I can try and reproduce/play with this on my side if it's helpful? BookStack/app/Auth/Access/LdapService.php, (Line 197 in app/Auth/Access/LdapService.php), @joaomezzari try adding to /etc/openldap/ldap.conf this line: This is the only content: NOTICE: error log file re-opened. Your previous content has been restored. :-). If your version was linked against the OpenLDAP libraries, you may want to look at the ldap.conf file for more information about specifying SSL/TLS behavior. You signed in with another tab or window. Damn, git repo is in --single-branch mode from the install. I can also telnet to this port from another openldap-client machine. then i added another $filter "(o=Exchange)" and it failed; then i went back to the example above, and the same old error. @cenix102 use ldap:// to avoid the problem. By clicking Sign up for GitHub, you agree to our terms of service and TLS_DHE_RSA_WITH_AES_128_GCM_SHA256. I am experiencing exactly the same issue in my environment when attempting to set up BookStackApp with LDAPS against a Windows Server 2016 domain controller. An addition to trying to setup failover. This is the second time I was bit by the "I need to search the entire tree" problem. httpd_can_connect_ldap --> off. That photo ends up in the "jpegPhoto" attribute. cPanel is the global leader for website and server management. PHP Warning: ldap_start_tls (): Unable to start TLS: Can't contact LDAP server in D:\wamp64\www\glpi914\inc\authldap.class.php at line 2214 Last edited by lexcorp (2017-07-27 16:27:07) Offline #2 2017-07-27 06:31:00 Roshan Member Registered: 2017-07-26 Posts: 69 Hello , i dont know about SSL port , but default Port for LDAP is 389. TLS_REQCERT never Can you try to change LDAP_DN=bookstack.connector@domain to distinguished name? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Thanks for contributing an answer to Stack Overflow! How to deal with "online" status competition at work? Ok, I created a new test environment from scratch to test it. ", PHP Warning: ldap_start_tls(): Unable to start TLS: Can't contact LDAP server in D:\wamp64\www\glpi914\inc\authldap.class.php at line 2214, Last edited by lexcorp (2017-07-27 16:27:07). You can post now and register later. Human Language and Character Encoding Support, https://andreas.heigl.org/2020/01/31/handle-self-signed-certificates-with-phps-ldap-extension/, http://www.mail-archive.com/php-bugs@lists.php.net/msg02201.html, http://developer.novell.com/ndk/doc/php/index.html. rev2023.6.2.43474. (Not to mention it works for root.) By default, PHP uses Protocol 2. PHP8 ldap_bind : Error -1 Can't contact LDAP server Is "different coloured socks" not correct? Can you do a git fetch and a git checkout ldaps_1922 then see if that fixes this? It checks whether the given parameters are plausible and can be used Why does bunched up aluminum foil become so extremely hard to compress? To learn more, see our tips on writing great answers. By TLS_CACERT /etc/openldap/certs/domain.crt, I have tried this with centos 7 and it works, @ssddanbrown Updated it as you suggested, getting this error now: I have an odd issue where my root user can connect to an external LDAP server, but a normal cPanel user cannot. 4 Answers Sorted by: 13 Had this error on RHEL7 ( CentOS7 ) due to SELinux restricting ports HTTPD can use. I had terrible problems with "Unable to bind to server: Invalid credentials" error - everything seemed to be OK (login/pwd used in other apps). It seems like httpd isn't reading a necessary certificate and is thus not able to communicate with the remote LDAP server. After doing the ldap_connect, do the ldap_bind. (userAccountControl:1.2.840.113556.1.4.803:=2)))BaseDN = DC=local,DC=test,DC=mxRootDN = CN=Administrador,CN=Users,DC=local,DC=test,DC=mxPassword = *****Login Field = samaccountnameUse TLS = yes, When test connection: "Test of Main Server myldap failed. to your account. And what's on line 71? Describe the bug With the same config it did not work before so I really have no idea how enabling debugging did anything here. Connect and share knowledge within a single location that is structured and easy to search. I sure do wish there was some way I could get this information out to all programmers in the world about binding and searching MS AD. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA.
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