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nss_ldap: could not determine LDAP server from ldap.conf or DNS
by Claudio Guzman 24 Oct '10

24 Oct '10

I get this error in the log files, Any idea what can cause this best regards

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Authenticating OpenLDAP client with AD
by Vinay Kalkoti 23 Oct '10

23 Oct '10

Hi, I am working on authenticating OpenLDAP client with AD server. I saw lots of examples which map the rfc2307bis schema using nss_schema attribute in ldap.conf file # Enable support for RFC2307bis (distinguished names in group # members) nss_schema rfc2307bis and also, map the attributes of the rfc2307bis to the AD server schema attributes. nss_map_attribute uid msSFU30Name nss_map_attribute uidNumber msSFU30UidNumber nss_map_attribute gidNumber msSFU30GidNumber nss_map_attribute loginShell msSFU30LoginShell nss_map_attribute gecos name nss_map_attribute userPassword msSFU30Password nss_map_attribute homeDirectory msSFU30HomeDirectory Isn't there a way I can fetch the schema from the AD server and set it using nss_schema ?. Basically, I am looking at fetching the schema/objectClass/Attributes from the LDAP/AD server and make them as a client schema's so that I don't have to keep doing the mapping using nss_map_attribute and nss_schema. I am new to LDAP world, and I am sorry if I my question doesn't make any sense. I have seen lots of enterprise products which integrate with LDAP/AD. They provide a user interface to map the server side schema objectClass and attributes. I am trying to see if I can get rid of this and do it internally. Thanks, Vinay

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ldap_unbind_s crashes, iphone
by Anil 22 Oct '10

22 Oct '10

Hi, I am using the OpenLDAP SDK for an iPhone project. On the iPhone 4, applications can go into the background (in a frozen state) and then come back to the foreground. When the app comes to the foreground, I do a unbind and then reconnect, to ensure I have a good connection (the LDAP server could do idle time out...). Sometimes, this ldap_unbind_s crashes the app, as noted below in the code and logs: if (LDAPServer) { NSLog(@"ldap_unbind_s req: %@", description); ldap_unbind_s(LDAPServer); NSLog(@"ldap_unbind_s completed: %@", description); } LDAPServer = NULL; Fri Oct 22 21:35:01 unknown CloudFace[780] <Warning>: ldap_unbind_s req: Entic.net Fri Oct 22 21:35:01 unknown com.apple.launchd[1] <Warning>: (UIKitApplication:net.entic.cf[0xb4bf]) Exited abnormally: Broken pipe Fri Oct 22 21:35:01 unknown SpringBoard[26] <Warning>: Application 'CloudFace' exited abnormally with signal 13: Broken pipe How should I handle proper unbind operation for this? I could just skip the whole unbind operation, and then make a *new* connection when the app is brought to the foreground and skip the whole ldap_unbind_s call. Is that the recommended action? Remember, the app can be in the background for just a few seconds or could be hours (when the connection would be dropped). I am trying to avoid having to make new connections repeatedly. I also have a method, setupServer() that is something like this: + (void) setupServer:(Server *)server { NSLog(@"+setupServer"); if ([server LDAPServer]) { NSLog(@"setupServer skipped... connection exists"); return; } ... } I have idle timeout set to 5 minutes on the LDAP server. Sometimes, even after 5-10 minutes, it doesn't crash, but sometimes it does... and it always seems to be in the ldap_unbind_s, I think. Thanks! Anil

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Applying individual password policies
by Michael Starling 22 Oct '10

22 Oct '10

OPENLDAP 2.43 I have a default password policy working OK but I'd like to override the default policy for one individual. I create the policy and add this LDIF without any problems. dn: cn=user,ou=Policies,dc=mdvcat,dc=lott cn: user objectClass: pwdPolicy objectClass: person objectClass: top sn: Password Policy pwdAttribute: UserPassword pwdMaxAge: 0 pwdLockout: FALSE pwdMinLength: 10 I then try to apply the policy to a user with the following LDIF dn: uid=ldapmgr,ou=people,dc=mdvcat,dc=lott changetype: modify add: pwdPolicySubentry pwdPolicy: cn=user,ou=Policies,dc=mdvcat,dc=lott I receive the following error. ldapadd -f ldapmgr.ldif -x -D cn=root,dc=mdvcat,dc=lott -W Enter LDAP Password: modifying entry "uid=ldapmgr,ou=people,dc=mdvcat,dc=lott" ldapadd: Undefined attribute type (17) additional info: pwdPolicy: attribute type undefined Any help would be appreciated Thanks, -Mike

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Every user queried when one user logs in
by Gerrard Geldenhuis 22 Oct '10

22 Oct '10

Hi My question probably straddles both PAM and LDAP so please scan it to the bottom before outrightly dismissing it as being mis-posted. I am not sure if this is by design but when I login as a user to a box with LDAP enabled I see a search request for every possible user in my dirctory. This breaks my test system if I have more than 10 000 users, while is unlikely that I would have so many users I would still like to optimize the LDAP query to be slightly less verbose. I have added nss_base directive which I did not have to optimize the search but it has not had the desired effect I had hoped for, it has in fact added an additional 70 odd packets to the average network capture when a user authenticates. my /etc/ldap.conf: binddn uid=SysAuth,ou=Service Accounts,dc=mycompany bindpw secret pam_password clear base dc=betfair nss_base_passwd ou=people,dc=mycompany?sub nss_base_group ou=Groups,dc=mycompany?sub nss_base_group ou=PrivateGroups,dc=mycompany?sub nss_base_group ou=SystemGroups,dc=mycompany?sub sizelimit 1000 idle_timelimit 5 timelimit 10 bind_timelimit 5 nss_reconnect_tries 1 nss_reconnect_maxconntries 1 nss_reconnect_sleeptime 1 nss_reconnect_maxsleeptime 1 nss_reconnect_maxconntries 1 I have also played around with various debug levels in /etc/ldap.conf but I have not really been succesfull in matching requests I see there to requests I see in wireshark. The man page in centos (man pam_ldap and nss_ldap ) also does not make any mention of available log levels or what they do. I have also scanned the source code for some more info on log levels but did not find anything usefull. If it is in the source code then please point me to it. I have gone through the pam list logs and the closest I could find was a the following thread: https://www.redhat.com/archives/pam-list/2009-September/thread.html and a similar thread in December 2010. This threads although similar is related to groups and my problem is with every user being queried. I am also I am 90% certain that is a config error on my part but I have not been able to find that error yet and would welcome any assistance in finding the problem. My system-auth in /etc/pam.d/ looks as follows: auth required pam_env.so auth sufficient pam_unix.so nullok try_first_pass auth requisite pam_succeed_if.so uid >= 500 quiet auth sufficient pam_ldap.so use_first_pass auth required pam_deny.so account required pam_access.so account required pam_unix.so broken_shadow account sufficient pam_localuser.so account sufficient pam_succeed_if.so uid < 500 quiet account [default=bad success=ok user_unknown=ignore] pam_ldap.so debug account required pam_permit.so password requisite pam_cracklib.so try_first_pass retry=3 password sufficient pam_unix.so nullok try_first_pass use_authtok password sufficient pam_ldap.so use_authtok password required pam_deny.so session optional pam_keyinit.so revoke session required pam_limits.so session optional pam_mkhomedir.so session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid session required pam_unix.so session optional pam_ldap.so Using CentOS release 5.4 Best Regards ________________________________________________________________________ In order to protect our email recipients, Betfair Group use SkyScan from MessageLabs to scan all Incoming and Outgoing mail for viruses. ________________________________________________________________________

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LDAP backend TODO: Determine the real behaviour of DN+String and DN+Binary
by Andrew Bartlett 21 Oct '10

21 Oct '10

Anatoliy, The next big task, as I mentioned on mumble yesterday, for us to do on the OpenLDAP backend is to correctly test and implement the DN+String and DN+Binary matching rules. Once we have positive tests for these rules, then we can ask the OpenLDAP team to implement them, but we want to make sure we ask once, for the right thing (I may have already muddied the waters here, so I want to try again once, with the right info). The things we need to find out are: If I search on a DN+String attribute, does it match against the DN, or the DN+String. Likewise for the DN+Binary. If I attempt to add a duplicate DN+String value to an attribute, does it conflict (only unique values allowed in LDAP) based on the DN, or the DN +String. Likewise for DN+Binary. Once we understand this (and have tests to prove it), we need to implement proper matching rules based on these, upgrading our comparison functions to proper comparisons (not just canonicalise and memcmp()). Finally, we need to write the results of that research into a mail to Howard Chu and OpenLDAP tecnical, and see if they can help us by implementing this in their server, or if we should somehow deal with this client side. A particular difficulty is that we must have these values implement DN rules, such backlinks, changing on target rename and deleting when the target deletes etc, and a functional dereference control (or a replacement with extended DNs). There may be additional funny rules like the fact that you will see duplicates in backlinks that have different source String parts of the DN+String values, but for the same DN. I've CC'ed Howard, Pierangelo and openldap-technical to give them a heads-up about the fact that we are hoping to pick the ball up on this again, now some other matters have settled down. Andrew Bartlett -- Andrew Bartlett http://samba.org/~abartlet/ Authentication Developer, Samba Team http://samba.org Samba Developer, Cisco Inc.

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ldap_sasl_bind(SIMPLE): Can't contact LDAP server (-1)
by Helge Tore Høyland 21 Oct '10

21 Oct '10

Hi. I'm trying to get openldap up and running. I am following this howot: http://techpubs.spinlocksolutions.com/dklar/ldap.html I did a previous atempt yesterday, where i tried to do a tls setup. Today i have done a dpkg-reconfigure slapd so, everything should be back to start. /etc/hosts 127.0.0.1 localhost localhost.localdomain 192.168.1.5 server.htnett server krb1.htnett krb1 ldap1.htnett ldap1 # The following lines are desirable for IPv6 capable hosts ::1 localhost ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters ff02::3 ip6-allhosts /etc/ldap/ldap.conf # # LDAP Defaults # # See ldap.conf(5) for details # This file should be world readable but not world writable. BASE dc=htnett URI ldap://192.168.1.5/ #SIZELIMIT 12 #TIMELIMIT 15 #DEREF never /etc/ldap/slapd.conf er vedlagt. This is installed on a fully updated Debian 5.0.6 distro. slapcat gives a nice readout but: ldapsearch -x stats this: ldap_sasl_bind(SIMPLE): Can't contact LDAP server (-1) This means no other computer will be able to connect through net. Portmap is running, but hosts.allow and hosts.deny is emty. hostname is server. Anyone got a clue to whats wrong?

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quick-start guide out-of-date
by Anders Geffen 20 Oct '10

20 Oct '10

I'm just getting started with OpenLDAP and I've just hit my first roadblock - the quickstart guide (http://www.openldap.org/doc/admin24/quickstart.html) refers to a slapd.conf file which is nowhere to be found on my system. A bit of research revealed that slapd.conf has been deprecated. Is there a quick-start guide anywhere that is up-to-date with this change?

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ldapadd - no such object 32
by eric 20 Oct '10

20 Oct '10

Hi I just compiled an openldap server and am working on the server as root to add a test ldif entry. I used MigrationTools (migration_passwd.pl) to export some users from my /etc/passwd file which created my test.ldif file Below is an error and below the error is the test.ldif file and slapd.conf that I have been working with. I receive the following error when I try to use ldapadd ***************my ERROR**************************** root@inside:/# ldapadd -H ldap://127.0.0.1 -x -D "cn=Manager,dc=inside,dc=domain,dc=org" -f /test.ldif -w 'rtpass' adding new entry "uid=fungi,ou=People,dc=inside,dc=domain,dc=org" ldap_add: No such object (32) matched DN: dc=inside,dc=domain,dc=org ***************test.ldif file********************** dn: uid=fungi,ou=People,dc=inside,dc=domain,dc=org uid: fungi cn: Fred Ungi objectClass: account objectClass: posixAccount objectClass: top objectClass: shadowAccount userPassword: {crypt}1234567891012 shadowLastChange: 14897 loginShell: /bin/false uidNumber: 1001 gidNumber: 1002 homeDirectory: /home/fungi gecos: Fred Ungi ******************slapd.conf********************** # # See slapd.conf(5) for details on configuration options. # This file should NOT be world readable. # include /usr/local/etc/openldap/schema/core.schema include /usr/local/etc/openldap/schema/cosine.schema include /usr/local/etc/openldap/schema/inetorgperson.schema include /usr/local/etc/openldap/schema/misc.schema include /usr/local/etc/openldap/schema/nis.schema # Do not enable referrals until AFTER you have a working directory # service AND an understanding of referrals. #referral ldap://root.openldap.org pidfile /usr/local/var/run/slapd.pid argsfile /usr/local/var/run/slapd.args # Load dynamic backend modules: # modulepath /usr/local/libexec/openldap # moduleload back_bdb.la # moduleload back_hdb.la # moduleload back_ldap.la # Sample security restrictions # Require integrity protection (prevent hijacking) # Require 112-bit (3DES or better) encryption for updates # Require 63-bit encryption for simple bind # security ssf=1 update_ssf=112 simple_bind=64 # Sample access control policy: # Root DSE: allow anyone to read it # Subschema (sub)entry DSE: allow anyone to read it # Other DSEs: # Allow self write access # Allow authenticated users read access # Allow anonymous users to authenticate # Directives needed to implement policy: # access to dn.base="" by * read # access to dn.base="cn=Subschema" by * read # access to * # by self write # by users read # by anonymous auth # # if no access controls are present, the default policy # allows anyone and everyone to read anything but restricts # updates to rootdn. (e.g., "access to * by * read") # # rootdn can always read and write EVERYTHING! ####################################################################### # BDB database definitions ####################################################################### database bdb suffix "dc=inside,dc=domain,dc=org" rootdn "cn=Manager,dc=inside,dc=domain,dc=org" # Cleartext passwords, especially for the rootdn, should # be avoid. See slappasswd(8) and slapd.conf(5) for details. # Use of strong authentication encouraged. rootpw {SSHA}11111111111111111111111111 # The database directory MUST exist prior to running slapd AND # should only be accessible by the slapd and slap tools. # Mode 700 recommended. directory /usr/local/var/openldap-data # Indices to maintain index objectClass eq I'm a super newbie, so hopefully it is something I missed while reading the admin documentations Thank you in advance for any experience you can throw my way :) ~eric

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slapd why sasl error message?
by pablo.web＠tiscali.it 20 Oct '10

20 Oct '10

To all LADAP GURU. I installed ldap (slapd 2.4.17) on a debian machine (ARM processor). The LDAP server allows you to centralize authentication of users and unix samba (samba is set with the PDC for windows machines, all with windows 7 OS). The communication is protected by TLS / SSL. Don't use SALS mechanism and, at the moment, I don't want to use it. Everything works perfectly but I don't understand why in the log file (syslog) I find the following error message: Oct 18 14:52:10 qnapserver slapd[11916]: daemon: read active on 26 Oct 18 14:52:10 qnapserver slapd[11916]: connection_get(26) Oct 18 14:52:10 qnapserver slapd[11916]: ==> sasl_bind: dn="" mech=DIGEST-MD5 datalen=0 Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=8 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=9 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=10 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=11 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=12 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: activity on 1 descriptor Oct 18 14:52:10 qnapserver slapd[11916]: daemon: activity on: Oct 18 14:52:10 qnapserver slapd[11916]: Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=8 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=9 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=10 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=11 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=12 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: activity on 1 descriptor Oct 18 14:52:10 qnapserver slapd[11916]: daemon: activity on: Oct 18 14:52:10 qnapserver slapd[11916]: 26r Oct 18 14:52:10 qnapserver slapd[11916]: Oct 18 14:52:10 qnapserver slapd[11916]: daemon: read active on 26 Oct 18 14:52:10 qnapserver slapd[11916]: connection_get(26) Oct 18 14:52:10 qnapserver slapd[11916]: ==> sasl_bind: dn="" mech=<continuing> datalen=265 Oct 18 14:52:10 qnapserver slapd[11916]: SASL [conn=542] Failure: realm changed: authentication aborted Oct 18 14:52:10 qnapserver slapd[11916]: send_ldap_result: err=49 matched="" text="SASL(-13): authentication failure: realm changed: authentication aborted" Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=8 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=9 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=10 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=11 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: epoll: listen=12 active_threads=0 tvp=zero Oct 18 14:52:10 qnapserver slapd[11916]: daemon: activity on 2 descriptors Oct 18 14:52:10 qnapserver slapd[11916]: daemon: activity on: Oct 18 14:52:10 qnapserver slapd[11916]: 26r This massage is displayed only after logged in from a Windows 7 client machine and is repeated approximately every 15 minutes. Please Help me, how can I fix this? Thanks Paolo

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openldap-technical