openldap-technical January 2008

openldap-technical@openldap.org

48 participants
57 discussions

SSL/TLS connection on port 389
by Chris Carr 30 Jan '08

30 Jan '08

Hi All, I've been running slapd with "-h ldaps:///" so that it takes SSL/TLS connections on port 636. This has worked with most clients (Outlook, Seamonkey, Thunderbird) but does not work for Evolution. I don't know why not, but Evolution seems to insist on using port 389 for secure connections. When I type openssl s_client -connect my.server.com:389 It says connection refused. When I type the same command with :636 at the end it connects fine. Could somebody explain to me how to tell slapd to accept secure connections on port 389? I am using the new version of slapd in Debian Testing (2.4.7-1). Sorry if this is a really stupid question, but according to the docs the "startTLS" process should be automatic if a secure connection comes in on port 389. Something is obviously not quite right. Thanks in advance, Chris This e-mail may contain information which is confidential, legally privileged and/or copyright protected. This e-mail is intended for the addressee only. If you receive this in error, please contact the sender and delete the material from your computer

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only ET_DYN and ET_EXEC can be loaded
by Pat Riehecky 29 Jan '08

29 Jan '08

When I started up my test slapd today I got the following message (along with a bunch of normal stuff): line 41 (moduleload smbk5pwd) lt_dlopenext failed: (smbk5pwd) /usr/lib/ldap/smbk5pwd.so.0: only ET_DYN and ET_EXEC can be loaded /etc/ldap/slapd.conf: line 41: <moduleload> handler exited with 1! What on earth does this mean? I spent some time on google to no avail. I know it doesn't like my .so.0 but (a) what doesn't it like and (b) how do I fix it? Pat

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OpenLDAP and Solaris 10 - group problem
by Kick, Claus 29 Jan '08

29 Jan '08

Hello everyone, we are trying to use OpenLDAP to provide user management for a CMS. The CMS relies on OS groups to manage directory branch- and file-access. We are using the following group structure: dn: cn=ts_de_de_gg_ax, ou=Group, o=********** gidNumber: 1400 memberUid: uid=tsmaster, ou=People, o=********** memberUid: uid=teamsite, ou=People, o=********** memberUid: uid=ostehov9, ou=People, o=********** memberUid: uid=zenksid3, ou=People, o=********** memberUid: uid=lellirdg, ou=People, o=********** memberUid: uid=osteholdap, ou=People, o=********** objectClass: posixGroup objectClass: top cn: ts_de_de_gg_ax a user looks like this: dn: uid=osteholdap, ou=People, o=********* sn: osteholdap userPassword:: ********* loginShell: /bin/bash uidNumber: 3618 gidNumber: 504 mail: ****** objectClass: top objectClass: person objectClass: posixAccount objectClass: shadowAccount objectClass: teamsiteinfo objectClass: inetOrgPerson uid: osteholdap tcgid: Z000E58C gecos: *********** teamsiteuserrole: tsuser shadowLastChange: 11111 cn: ******* homeDirectory: /tmp However, it is not possible for a user to access directories belonging to a secondary group he belongs to. What could be the issue here? I would be very grateful for a pointer into the right direction. Regards, Claus Kick

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Uniqueness of entryUUID across multiple LDAP servers
by Rakesh Yadav 29 Jan '08

29 Jan '08

Hi, Actually i am using multiple LDAP servers due to distributed environment. So our tree hierarchy can span over multiple LDAP servers. And i want to use entryUUID as a unique key for my entries of the tree. Can u tell me,entryUUID would be unique over multiple LDAP servers? Or in case of multiple LDAP servers, Two entries which are residing on different LDAP servers but belongs to the same Tree Hierarchy, can have same entryUUID? Regards Rakesh Yadav On Jan 25, 2008 10:36 PM, Michael Ströder <michael(a)stroeder.com> wrote: > Rakesh Yadav wrote: > > > > I got your idea about entryUUID, but can u give me some idea about how > > can i retrieve the value of entryUUID for each entry if it is supported > > by LDAP system. > > Since it's an operational attribute it is not returned by default from > OpenLDAP. You have to explicitly request it or request all operational > attributes with +. > > Example (lines might be wrapped): > ldapsearch -b "dc=stroeder,dc=de" -s base "(objectClass=*)" "*" entryUUID > > or > > ldapsearch -b "dc=stroeder,dc=de" -s base "(objectClass=*)" "*" + > > Ciao, Michael. > --

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OpenLDAP+Active Directory
by Aiko Barz 28 Jan '08

28 Jan '08

Hello, is it possible to create an Active Directory forest with multible subdomains and make those informations available for one Linux machine? Right now, we have one domain and it is possible to do authentication against the Active Directory, while using OpenLDAP, PAM and Kerberos. But now, another department would like to have its own directory/sub-domain. This means: uid=xyz will be located on different directory servers within the Active Directory forest. That means, there are UIDs with different BASEDNs. CN=userA,OU=Users,DC=example,DC=local from AD1 and CN=userB,OU=Users,DC=sub,DC=example,DC=local from AD2 shall both be able to access a Linux box via SSH. No problem? Regards, Aiko -- :wq

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RE: [SPAM] - Re: Syncrepl multimaster replication issue - Sending mail server found on zen.spamhaus.org
by Penza Kenneth at MITTS 28 Jan '08

28 Jan '08

Tonni, Thanks very much for your help. I have removed the compiled version of openldap (it was failing in 4 test in make test) and installed the packages from http://staff.telkomsa.net/packages. The tests worked without any issues and managed to configure openldap using syncrepl. Thanks for the help provided Kenneth Penza -----Original Message----- From: openldap-technical-bounces+kenneth.penza=gov.mt(a)openldap.org [mailto:openldap-technical-bounces+kenneth.penza=gov.mt@openldap.org] On Behalf Of Tony Earnshaw Sent: 24 January 2008 07:34 Cc: openldap-technical(a)openldap.org Subject: [SPAM] - Re: Syncrepl multimaster replication issue - Sending mail server found on zen.spamhaus.org Penza Kenneth at MITTS skrev, on 23-01-2008 11:06: > I am currently trying to setup a multi-master ldap setup. > The setup is running on CentOS 5.1 with kernel 2.6.18-53.el5. In this > setup I have migrated the UNIX authentication files using MigrationTools > and everything worked fine. When I am trying to setup the replication I > am encountering a strange behavior. The initial synchronization was > performed by copying /var/lib/ldap directory when openldap was shutdown. > On starting both nodes query each other and everything seems operating > correctly. When I perform a change on either node, the node performs the > local change however it is not propagated on the other node and in the > /var/log/ldap.log I get the following message: > > > > When ever the change is made on ldap1 it reports: > > Jan 23 10:10:43 ldap1 slapd[5787]: null_callback : error code 0x10 > > Jan 23 10:10:43 ldap1 slapd[5787]: syncrepl_updateCookie: rid=002 > be_modify failed (16) Apart from what Gavin writes, since you're using CentOS5.1, consider using Buchan Milne's Red Hat RHEL5 rpms or src rpm at http://staff.telkomsa.net/packages/. He's done an awful lot of work (has done for years) and patched things that need patching (apart from anything else db4.6) which should ensure things working out of the box on your system. Best, --Tonni -- Tony Earnshaw Email: tonni at hetnet dot nl

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Read/Write locks for LDAP entry
by Rakesh Yadav 28 Jan '08

28 Jan '08

Hi, Actually i want to know whether we can acquire any kind of lock in openLDAP for entries. Suppose we read some entry and use this for doing some calculation and at the same time someone else modify this entry, so i want to know that LDAP provides any kind of lock just like RDBMS. In case of RDBMS we can acquire lock over any record so nobody can modify this until we release this lock. Please tell me about the locking mechanism in OpenLDAP. Thanks -- Rakesh Yadav Pune.

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RFC 2307 and me
by Sean Myers 28 Jan '08

28 Jan '08

I'm currently using an LDAP directory to do a few jobs, including acting as a Network Information Server in a POSIX environment (Debian Linux) via libnss-ldap. It's working great, with authentication handled by Kerberos...simple and elegant SSO. The question I have about RFC 2307, though, stems from a few applications that I've encountered along the way that don't really do things in a POSIX way, and while they can sift through my "people" ou just fine with filters I provide, they generally want my groups to act like a groupOfNames entry, with full DN member attributeTypes, insead of the POSIX uid alone. Are the applications that I'm using simply being unreasonably inflexible? If so, they're all open-source and adding in support to do things the RFC 2307 POSIX way as well as the RFC 2256 groupOfNames way is not an unthinkably difficult task. My initial feeling on this is that not everything is POSIX compatible, not everything should be POSIX compatible, and it might be useful for me and others to be able to abandon RFC 2307 for defining groups in favor of RFC 2256, which appears to be the more "LDAP/X.500" way of doing things. I'm using this directory for a few services, and Linux NSS is really the only POSIX user in the bunch, so would it be "right" to instead fork and libnss-ldap to support RFC 2256 for my implementation? If so, has this been done already? Looking for input before I violate established best practice, and apologies if I've failed at searching. Thanks. -- Sean Myers System Administrator American Research Institute (919) 228-4961

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openldap tls with a ca
by Dave 27 Jan '08

27 Jan '08

Hello, I'm trying to set up openldap for network authentication of both FreeBSD and Linux machines as well as integrating a samba pdc. I've created a ca with instructions found at: http://sial.org/howto/openssl/ca/ I've added the appropriate options to slapd.conf, for TLS as i don't want passwords going around in the clear. Slapd starts fine with tls options added, but if i do an ldapsearch -Z i get a can not contact ldap server. ldapsearch: # extended LDIF # # LDAPv3 # base <dc=davemehler,dc=com> (default) with scope subtree # filter: (objectclass=*) # requesting: ALL # # search result search: 2 result: 13 Confidentiality required text: confidentiality required # numResponses: 1 I assume this is normal, but the below is what i'm getting with ldapsearch -Z ldapsearch -Z: ldap_start_tls: Connect error (-11) ldap_result: Can't contact LDAP server (-1) Here are the tls options i'm using: slapd.conf: security ssf=128 TLSCipherSuite HIGH TLSCertificateFile /usr/local/etc/openldap/tls/ldap.davemehler.com.crt TLSCertificateKeyFile /usr/local/etc/openldap/tls/ldap.davemehler.com.key TLSCACertificateFile /usr/local/etc/openldap/tls/ca-cert.pem #TLSDHParamFile I'm not sure what that last file is or how to make it, is it critical? /usr/local/etc/ldap.conf: ssl start_tls tls_cacert /usr/local/etc/openldap/tls/ca-cert.pem Checking /var/log/debug.log i'm seeing an error confidentiality required, as if ldap can't read the key, but as i said it's mode 644. Here's the complete transaction: Jan 27 15:20:04 ldap slapd[73647]: conn=6 fd=10 ACCEPT from IP=192.168.0.203:51704 (IP=0.0.0.0:389) Jan 27 15:20:04 ldap slapd[73647]: conn=6 op=0 BIND dn="" method=128 Jan 27 15:20:04 ldap slapd[73647]: conn=6 op=0 RESULT tag=97 err=0 text= Jan 27 15:20:04 ldap slapd[73647]: conn=6 op=1 SRCH base="dc=davemehler,dc=com" scope=2 deref=0 filter="(&(objectClass=posixGroup))" Jan 27 15:20:04 ldap slapd[73647]: conn=6 op=1 SRCH attr=cn userPassword memberUid uniqueMember gidNumber Jan 27 15:20:04 ldap slapd[73647]: conn=6 op=1 SEARCH RESULT tag=101 err=13 nentries=0 text=confidentiality required Jan 27 15:20:04 ldap slapd[73647]: conn=6 fd=10 closed (connection lost) Any help appreciated. Thanks. Dave.

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Unique id for each ldap entry
by Rakesh Yadav 25 Jan '08

25 Jan '08

Hi, I want to get unique ids for each ldap entry, but i don't know whether ldap provides unique id for each entry or not. In case of RDBMS each entry(tuple) has a OID(Object id) through which we can access uniquely this Entry. In case of LDAP, i need such (OID) kind of object identifier. Please tell me whether ldap provides some kind of unique id(Other than DN) for it's entries or not. If yes then please tell me how we can get these unique ids? -- Rakesh Yadav Pune.

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openldap-technical January 2008