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khiali_130513's avatar
khiali_130513
Icon for Nimbostratus rankNimbostratus
Jun 16, 2014

Failed connection error from F5 LTM to replica LDAP servers

Failed connection error from F5 to replica LDAP servers. We see following error message every 10 seconds on both LDAP replica servers:-

 

The SSL layer has reported an unidentified internal error, SSL extended error code:410. Failed to initialize secure connection from client (connection ID: 18901, IP address: 10.x.x.x, Port: 28905). Client connection from 10.x.x.x bound as NULL closed by server.

 

can you please advice what is the possible fix and why we are getting this alert ?

 

Thanks

 

cloud
management
security
TMOS
TMSH

1 Reply

  • Night_67217's avatar
    Night_67217
    Historic F5 Account
    Jun 16, 2014

    Hi,

     

    This seems to be a message on the LDAP server itself, so it's a bit hard of thinking why the F5 would be at fault for this. Is the F5 setup for LDAP or LDAPS? See: http://social.technet.microsoft.com/wiki/contents/articles/2980.ldap-over-ssl-ldaps-certificate.aspx

     

    Is this message logged when traffic is passing to the LDAP or is it caused by monitors?

     

    I would advise you to try and verify what's communicated between the F5 and the server (packet captures) and see if you notice anything strange (SSL version mismatch?).

     

    If you can't figure it out, you can always open up a case with Support and they can help you. Please see what relevant data you should include: http://support.f5.com/kb/en-us/solutions/public/2000/600/sol2633.html?sr=38220646

     

    Cheers!