openldap client authentication without TLS certificate.
I've been reading a lot of how to's and googling and I have to say I'm left a little confused :)
I was wondering if someone can give me a hand here as Im a little lost and unable to authenticate a user with the ldap server.
The ldap server is in another department and have no idea who set it up.
However, I have been given connection/authentication strings.
There is no certificate, however, it is a simple authentication with ssl
I am currently running CentOS release 5.7 (Final) kernel 2.6.18-274.17.1.el5
As this is a client machine I did not install openldap-server.
I installed the following:
yum install -y nss_ldap.x86_64 openldap-clients.x86_64 openldap.x86_64 openldap24-libs.x86_64
rpm -qa | grep ldap
in the /etc/ldap.conf && /etc/openldap/ldap.conf I added the following:
bindpw <supplied password>
passwd: files ldap
shadow: files ldap
group: files ldap
when i run getent passwd user
it takes about 1 sec then returns with nothing.
nothing in /var/log/messages nor in /var/log/ldap.log
when running id user
id: user: No such user
when i do a ldapsearch
ldapsearch -x -b 'DC=server1,DC=domain,DC=com' -D "CN=blahname,OU=AccountName,DC=server1,DC=domain,DC=com" '(CN=user)' -H ldaps://server1.domain.com -W
Enter LDAP Password:
# extended LDIF
# search result
result: 0 Success
# numResponses: 3
# numEntries: 1
# numReferences: 1
I am able to get some results...
when I attempt to log into the server I get the following results in /var/log/secure:
Jul 30 07:58:27 test sshd: Invalid user user from XXX.XXX.XXX.XX
Jul 30 07:58:27 test sshd: input_userauth_request: invalid user user
Jul 30 07:58:36 test sshd: pam_unix(sshd:auth): check pass; user unknown
Jul 30 07:58:36 test sshd: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=machine.domain.com
Jul 30 07:58:36 test sshd: pam_succeed_if(sshd:auth): error retrieving information about user User
Jul 30 07:58:38 test sshd: Failed password for invalid user User from XXX.XXX.XXX.XXX port 43006 ssh2
It doesn't look like it is using ldap to authenticate
Is there something I am missing or have overlooked?
Thanks in advance
Did you add the CA cert that signed the cert for the ldap server? .. maybe something like:
thanks for the reply, Unfortunately not using TLS and therefore no certificates. Plain old simple authentication (have to laugh, as it is anything but simple :) )
Hence why i have added:
System-auth has the correct values:
## None of the users reside on the client machine. They need to authenticate via ldaps to login.
However, I am not seeing any entries for pam_ldap in /var/log/secure and i do not get any values returned with getent passwd user
Im currently at a loss as to what actions I need to perform, and am pulling hair out.. :D
Thanks in advance.
Maybe if there is a fantastic, great, awesome how to guide out there that I haven't looked at/read please feel free to post it.
So if you're connecting over ssl you don't think you need certificates? ..
well that is what I asked as well...
I was told I do not need a certificate to contact/authenticate against the server.
I also tried using 'apache directory studio' on a windows pc with the same credentials as above and it worked.
As I do not have access to the ldap server, I can only go on what information I am being told.
Apologies for the uniquness of this situation and my lack of expertese in ldap. :S
just want to add, that I have tried it with ldap://server.domain.com
and I get the same problem.
When you changed to ldap://... did you also change 'ssl no' ?
Yes i did. :(
it seems like it is not using pam_ldap at all.
i have also disabled selinux, and turned off the firewall.
Just noticed you were attempting to log in via ssh, do you have 'UsePAM yes' in /etc/ssh/sshd_config ?
Also, any idea what type of ldap server you're connecting to ?
Yes I also checked the /etc/sshd/sshd_config for "UsePAM yes"
I also restarted sshd :)
No I do not know what type of ldap server I am connecting to. (apparently that is restricted) :) all i know is that it uses a round robin system and I can connect to any one of them at different times.
Here is my current config (just for clarification) [changed via authconfig-tui]
Not sure if you need it but you could try adding:
thank you for the feedback.
I have tried your suggesstion and there has been no improvement :(
IF you think of anything else or a different way to set it up or a good how to guide let me know.
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