Error 0x51 fail to connect to ldap test

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You may start with "Windows 7 machine". Please, check if firewall isn't blocking Another firewall may be between "Windows 7 machine" and server, which allows and blocks You can try to user tools as "telnet" or "tracert" to check it.

The second thing to check would be certificates at server side.

How to troubleshoot LDAP over SSL connection problems

If you want to enable SSL certificates, you have to use certificates and certificate authorities. My question would be: what's your current configuration? So this is not very helpful, but "standard situation" with LDAP servers Learn more. Asked 7 years, 7 months ago. Active 7 years, 6 months ago. Viewed 3k times. Help me please! And thanks so much Active Oldest Votes.

Rastislav Hasicek Rastislav Hasicek 3 3 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.

error 0x51 fail to connect to ldap test

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It only takes a minute to sign up. I have a domain controller, which has Active Directory AD. When I try to netstat, I can see that port is open, but its IP address is 0. What is the problem?

Have I missed some step in this guide? What do I need to do extra? Now it works. Our company worked on this for 2 weeks. I've read 's of articles on this issue. In the end it was a cert name mismatch.

The only thing our application was seeing was error The worst part LDP. Even our webservices would properly authenticate, but our application the second it got the ACK RST from the ldap server it would instantly error Sign up to join this community. The best answers are voted up and rise to the top.

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Active 2 months ago. Viewed 16k times. This is the output I get from LDP. Jonas Hoffmann. Jonas Hoffmann Jonas Hoffmann 1 1 gold badge 1 1 silver badge 6 6 bronze badges. From what you say, the service is listening in all interfaces and you should be able to use it. Do you mean something else? If yes, please provide information on how to do that or where to find more information.

What do you mean by saying to bind locally and remotely? I did try to connect to AD from another computer. I have updated my original post with extra information. Active Oldest Votes. Justin Sciacca Justin Sciacca 1. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Programming tutorials can be a real drag.

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Tell us about your experience with our site. BedaTse Created on January 22, Error Encountered. The certificate received from the remote server does not contain the expected name. It is therefore not possible to determine whether we are connecting to the correct server.

The server name we were expecting is server1. The SSL connection request has failed. The attached data contains the server certificate.

This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread. I have the same question BedaTse Replied on January 27, Done further research and stumbled upon. While the hotfix cannot be installed for some reason for my case, after adding the registry as mentioned below the issue has been resolved.

Start Registry Editor. Thanks for marking this as the answer.

error 0x51 fail to connect to ldap test

How satisfied are you with this reply? Thanks for your feedback, it helps us improve the site. How satisfied are you with this response? This site in other languages x.Back To Search Results. Solution ID : SO If an existing LDAPS certificate is replaced with another certificate, either through a renewal process or because the issuing CA has changed, the server must be restarted for Schannel to use the new certificate.

Starting on May 17,the Intermediate CA certificates for the following certificates have been updated:. If you are renewing one of the above certificates, you will need to restart the LDAP server in order for it to use the new certificate. Ask a Question search.

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error 0x51 fail to connect to ldap test

Email To. Email From. Sender's Name. Printable Version. Cause If an existing LDAPS certificate is replaced with another certificate, either through a renewal process or because the issuing CA has changed, the server must be restarted for Schannel to use the new certificate.

Solution Please restart the server to resolve this issue. All rights reserved. DigiCert and its logo are registered trademarks of DigiCert, Inc.

Symantec and Norton and their logos are trademarks used under license from Symantec Corporation. Other names may be trademarks of their respective owners.Skip to main content. Select Product Version. All Products. More Information. Step 1: Verify the Server Authentication certificate Make sure that the Server Authentication certificate that you use meets the following requirements: The Active Directory fully qualified domain name of the domain controller appears in one of the following locations: The common name CN in the Subject field The Subject Alternative Name SAN extension in the DNS entry The enhanced key usage extension includes the Server Authentication object identifier 1.

The associated private key is available on the domain controller. To verify that the key is available, use the certutil -verifykeys command. The certificate chain is valid on the client computer. To determine whether the certificate is valid, follow these steps: On the domain controller, use the Certificates snap-in to export the SSL certificate to a file that is named Serverssl.

Copy the Serverssl. On the client computer, open a Command Prompt window. At the command prompt, type the following command to send the command output to a file that is named Output.

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Using ldp.exe to test LDAP and LDAPS connectivity

Italia - Italiano. Malaysia - English. Nederland - Nederlands.I found a cool utility on Novell's website that can be used to view the SSL certificate on a remote directory server.

Download the View Directory Certificate utility and extract the files to a temporary folder. Then run ViewDirCert. You can configure the host to trust this certificate by either adding the CA to the local machine's Trusted Root Certifications Authorities store or by importing the self-signed certificate into the local machine's Trusted Root Certifications Authorities store.

Thank you, this helped in troubleshooting a new SSL cert for ldap! Excellent tools you found. Thank you for your comment! It is my hope that you find the information here useful.

Let others know if this post helped you out, or if you have a comment or further information. The tools described work with Windows-based systems Windows XP and above. First, you will need the LDP. You can also use the Portqry tool to verify that the directory server is listening on the correct port.

The certificate details will be displayed in a new window. If the certificate was generated by an untrusted Certificate Authority CA or is a self-signed cert that the host does not trust, you will see a warning as shown below: You can configure the host to trust this certificate by either adding the CA to the local machine's Trusted Root Certifications Authorities store or by importing the self-signed certificate into the local machine's Trusted Root Certifications Authorities store. Posted by Jeff Guillet - expta at AM.

Anonymous October 4, at AM. Mystique October 19, at AM. Anonymous December 7, at PM. Newer Post Older Post Home. Subscribe to: Post Comments Atom.Need support for your remote team? Check out our new promo! IT issues often require a personalized solution. Why EE? Get Access. Log In. Web Dev. NET App Servers. We help IT Professionals succeed at work. Medium Priority. Last Modified: I've installed a certification authority on our domain controller and yes I'm aware of the associated security risks and issued certs and installed certs on the application server.

I think port is not enabled. Does anyone now how to enable this port? I've patched the server for MS which I think may have disabled port Start Free Trial. View Solution Only. Tolomir Administrator. Top Expert This award recognizes someone who has achieved high tech and professional accomplishments as an expert in a specific topic. Commented: Author Commented: No I can't. I get the same error message when trying to use port If it helps I just tried this from my application server to my domain controller.


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