CentOS 5 :: Openldap Client Won't Bind To Server
Jul 2, 2011
I can't get the client server to authenticate to the openldap server. I can authenticate on the server itself though. I can su to, login and shh into the openldap server and become a ldap user. I just can't become an ldap user on the client.I didn't setup TLS/SSL. I can do that after I have it working. I'm using hashed passwords though. I don't have replication setup. I'm am tying to setup the most basic openldap environment then build from there. I have read the openldap section in the admin guide.
My setup at home.
Openldap server � light.deathnote.net -- 10.0.1.21
client server � vm-centos01.deathnote.net � 10.0.1.7 -- VM on virtualbox
Virtualbox host � L (OS MAC) � 10.0.1.2
router (apple airport extreme) / default gatway � 10.0.1.1
All computer can reach the internet and ping each other. When I installed centos I disabled SELinux.I used these guids to setup my openldap.
[URL]
Below I have included some output from the files I'm using with openldap.
[root@vm-centos01 ~]# tail /var/log/messages
Jul 2 09:25:33 vm-centos01 xfs: nss_ldap: reconnecting to LDAP server (sleeping 16 seconds)...
Jul 2 09:25:49 vm-centos01 xfs: nss_ldap: failed to bind to LDAP server ldap://light.deathnote.net: Can't contact LDAP server
Jul 2 09:25:49 vm-centos01 xfs: nss_ldap: failed to bind to LDAP server ldap://10.0.1.21/: Can't contact LDAP server
[code]....
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Mar 4, 2011
I am bit new to Linux and have setup caching-only name server with Centos 5.5. when i do dig server, it provide resolutions. but when i use the server IP as DNS on my windows client, it says, "connection refused" on the NSlookup output. (IP table didn't enable) My server Ip is 192.168.1.253 and bellow is the configuration of "/var/named/chroot/etc/named.conf"
options {
listen-on port 53 { 127.0.0.1; 192.168.1.253; };
listen-on-v6 port 53 { ::1; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt"; .....
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Jul 24, 2010
I finished setup Samba PDC with Openldap backend. I can joint Winxp client to domain but can not change pass by press Ctrl + Alt + Delete and choose Change password button
This is my conf.
I used
samba3x-3.3.8
openldap 2.3.43
slapd.access.conf
Code:
access to attrs=userPassword,shadowLastChange,sambaNTPassword,sambaLMPassword
by dn="cn=Manager,dc=microhdesk,dc=net" write
by anonymous auth
by self write
by * none
[Code]....
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Aug 27, 2010
I've configured OPENLDAP server on the CentOs 5.3. Well everything is working fine .All the uses have been added to the database.database is bdb in ldap configuration.Now client machine is on windows xp. how to integrate Windows Xp with the LDAP server for authentication.
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Sep 28, 2010
Just installed openldap server on a VM CentOS called 'ldapsrv', it works fine, ldapsearch returns all ldap information.
Installed openldap client on another VM CentOS called 'ldapclient1', configured it with most basic configuration, no ssl/tls etc. but ldapsearch returns error:
ldapsrv is pingable:
Some outputs:
PHP Code:
PHP Code:
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Jul 28, 2010
I have configureed Bind in a Linux box. Well pc1 i.e "pc1.mydomain.com" is my client machine and main server is the computer in which bind is install.The client computer pc1 and the main server (Bind server) i.e FQDN "mainserver.mydomain.com "are on the same network.from client machine i can't resolve the name to IP address as my server do successfully with client. The /etc/resolv.conf file in my bind server is as
Code:
search mydomain.com
nameserver 192.168.1.254
The named.config it main configuration is as below
Code:
zone "mydomain.com" IN {
[Code]...
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Nov 23, 2009
I want to build a domain like abc.com in my LAN environment. Kindly tell me step by step procedure of installing OpenLDAP on CentOS 5.3.
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Feb 2, 2011
I configured OpenLdap and now I want to configure it using TLS-SSL
But I cannot get it working with the Linux clients. Environment: Centos 5.5
Openldap Server configuration:
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Jun 22, 2009
CentOS 5.2. Openldap server-2.3.27-8.el5_2.4 I'm trying to get the server to do two things. One is allow authentication--that is, if a client is configured to use openldap for authentication, it should be able to access this server.
In other words, on machine_2, a client, doing getent passwd (as a quick test) will show the users in the openldap database. The more or less out of the box configuration works for this. However, as soon as I start trying to add ACLs, it stops working. For example, I want to restrict access to an address book which is also in the database. So I have
access to base.dn(changing base to subtree makes no difference) "ou=addressbook,dc=example, dc=com"
by users read by anonymous auth Now, even though this is just the address book, after that, an ldap client can no longer get the names of users in ou=People, and using the ldap server for authentication doesn't work.
I don't understand what I'm missing. ACLs are supposed to work first match wins. *IF* I add under that, access to * by * read, it will work, but the address book can then be accessed without a bind dn.
I am not sure what I'm overlooking. If I put in any sort of access control, the only way that clients can continue to use the server for authentication is adding that access to * (or to dc=example,dc=com"), by * read. I tried using access to ou=Group and ou=Peoplle by * read, thinking that would allow the clients to authenticate, but that doesn't work either, The idea is to allow any machine configured as a client to use it for authentication, but also to restrict viewing the address book only to those with a proper bind dn name.
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Aug 17, 2010
I would like to remove openldap from my Centos home-server..
Centos offers me:
Quote:
Removing:
openldap i386 2.3.43-12.el5_5.2 installed 592 k
openldap x86_64 2.3.43-12.el5_5.2 installed 598 k
[Code]...
..obviously I'll not remove openldap by this operation.. but my question is: there is another way to remove a single package with yum without "consequences"?
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Apr 30, 2011
Friends is there some way to authenticate Microsoft windows users from openldap running on CentOS. I will be very thankful if you provide me step by step procedure.
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Nov 15, 2010
There are several parts of problems in my question.
1. Install openLDAP and authenticate clients
2. Simple way to authenticate Ubuntu clients (just like Windows simple domain model, but Linux)
Part 1 What I have done: I have been working on openLDAP for the past 4 weeks. There is a lot of information on LDAP and I have read a lot of it There are several guides out there for openLDAP installation on Ubuntu, and I have tried many of them, and reinstalled the server between tests.
[Code]...
Part 2 Simple way to authenticate Ubuntu clients (just like Windows simple domain model, but Linux)
I have tried to find something similar to Windows client login, but haven't found anything that works. I just need to be pointed to somewhere to read about the authentication model in Linux. I can work out my from there. It must be something very simple I am missing, because when I read som echapters in The Ubunutu Bible, I can't find anything on it.
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Jul 29, 2011
i am trying to run bind in centos 6 and bind keeps giving me errors every time i check all of the configurations. the named.conf file works fine but the zone files keep giving me errors heres the contents of my named.conf file
Code:
options {
directory "/var/named";
listen-on port 53 { any; };
allow-query { any; };
[Code]....
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Jul 15, 2011
How to install bind 9.7 in centos 5.6 if i installed using yum means, its defaultly installing 9.3 version.
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Feb 3, 2016
I'm testing to log in using openldap authentication on jessie by following article from [URL] ..... and when I try to log in from ldap client (another debian 8 VM), it failed with
Code: Select allFeb 3 09:25:33 clt nscd: nss_ldap: could not connect to any LDAP server as cn=admin,dc=test,dc=lab - Can't contact LDAP server
Feb 3 09:25:33 clt nscd: nss_ldap: failed to bind to LDAP server ldap:///192.168.191.120: Can't contact LDAP server
Feb 3 09:25:33 clt nscd: nss_ldap: reconnecting to LDAP server...
Feb 3 09:25:33 clt nscd: nss_ldap: could not connect to any LDAP server as cn=admin,dc=test,dc=lab - Can't contact LDAP server
[Code] ....
test result from client with ldapsearch
Code: Select all# ldapsearch -h 192.168.191.120 -D cn=admin,dc=test,dc=lab -W -x -b 'dc=test,dc=lab' 'userName=*'
Enter LDAP Password:
# extended LDIF
#
# LDAPv3
# base <dc=test,dc=lab> with scope subtree
# filter: userName=*
[Code] .....
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Mar 30, 2010
Am running the latest CentOS5 with Bind. Bind will run for a period(time period unknown) the shutsdoown. We need to every day start the service. When the service starts there are no errors given.
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May 4, 2010
setting up Bind for web-hosting as i am using Webmin to configure it?
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Aug 15, 2010
I had centos 5-5 server with 6G of RAM and 4 core cpu 3GHZ i installed bind 9.7.1-p2 on my server with multi thread support there are a lot of dns requests on my server , about 2500 Packets/sec and 3Mbit UDP traffic but my server response week to most of them.
For example when i use nslookup or dig command to query Yahoo.com the response from server maybe deliver about 5 Sec or become timed out , but sometimes response time less than 1 sec!
I don't know why, perhaps kernel works week so i decided to do the following :
But the problem didn't solved
I previously had Freebsd with same version of bind and same configuration and everything worked fine.
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Dec 20, 2010
don't find box of BIND so i was posting into this boxI have some problem when i config bind DNS for my domain and then i can't start named,this's error message
[root@server1 named]# service named restart
Stopping named: [ OK ]
Starting named:
[code]....
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Mar 11, 2011
I installed BIND 9.7.3 from source on Centos 5.5, and chrooted it, and I'm getting an error when I run 'service named status' I get a reply, but at the end it says 'named dead but pid file exists'
Here's the entire output:
[root@ns etc]# service named status
version: 9.7.3
number of zones: 23
debug level: 0
xfers running: 0
xfers deferred: 0
soa queries in progress: 0
query logging is OFF
recursive clients: 0/0/1000
tcp clients: 0/100
server is up and running named dead but pid file exists Nothing is logged in /var/log/messages. Named is running and responding correctly. How can I get rid of this error?
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Apr 30, 2011
i have xp and virtual guest centos 5.i install apache, bind, squid and webmin through xp, i can access URL...but when i start my squid, put the ip in the browser proxy settings, when i logon its ip turn to URL...I believe my bind is working. Though theres some little glitch. I dont know where.and i already put my servers bind ip to my winxp primary dns server settings.
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Aug 26, 2011
I have setup two BIND9 servers as slaves for an internal Windows domain. I receive messages in my logs about a Windows server not being the master for the slave domain on BIND. I have placed the allow-notify statement in the global options section of named.conf, as well as setting the IP address in the masters section of the zone. I'm confused as to why I'm still getting this error message.
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Nov 28, 2010
I've been looking for a good tutorial for setting up a BIND DNS server for my local network. What I want to do is..Have BIND running on my home server receiving all DNS requests.Have certain zones (my.zone.lan) pointing to custom IP addresses (I.E. server.lan points to 192.168.{server IP})Zones that don't exist should be passed on to OpenDNS for processing.
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Oct 20, 2009
Don't work nslookup from clients guest OS.I have LinuxMint 7 and I'm installed VirtualBox on her. I created three guests OS. Two CentOS and XP
Name
The first CentOS linux1.starline.ca
The second CentOS centos.starline.ca
The third XP xp2.starline.ca[code].....
On the clients guest OS nslookup don't work. It write : timed out; no servers could be reached .What is going on? Why nslookup don't work from clients guest OS?On client machine in the file /etc/resolv.conf have record ameserver 168.135.88.2
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Dec 31, 2010
I have installed bind with yum install bind bind-chroot.I am having query timeouts due to no ipv6 connectivity.Is there a way to re-compile and not loose the chroot structure?Or is there another way to disable ipv6 lookups?Example of issue resulting in ipv4 query timeout:
30-Dec-2010 17:52:03.226 client x.x.x.x#53593: view internal: query: paypal.com.cms.local IN A +
30-Dec-2010 17:52:03.227 client x.x.x.x#53594: view internal: query: paypal.com.cms.local IN AAAA +
30-Dec-2010 17:52:03.228 client x.x.x.x#53595: view internal: query: paypal.com IN A +
[code]....
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Mar 21, 2011
I installed bind & did not install chroot. I set up a fictional domain kelly.local. I am able to resolve FQDN (example: angus.kelly.local) in both dig & nslookup & ping on linux boxes.
I want to be able to resolve bare host names (example: angus) using bind. I get mixed results.
(1) linux boxes resolve bare host names & FQDNs just fine using nslookup & ping, but not dig. dig gives error:
; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_5.3 <<>> angus
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 15241
[Code]....
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May 31, 2011
I have updated bind using yum on a Centos 5.3 server, after restarting, I have this error now.
Error in named configuration:
zone localhost/IN: loaded serial 42
/var/named/mydomain.hosts:20: unknown RR type 'SPF'
My version of is : bind.x86_64 30:9.3.6-16.P1.el5
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Oct 19, 2010
when client goes to bind to NFS share on remote server - they are getting access denied when using the mount command; [SERVER] - CentOS 5.3 /etc/exports /mnt/data 192.168.5.199(rw) - implying the client I want to have access
[Code]...
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Dec 14, 2009
I am setting up a cluster of servers which use Centos Directory Server for control of logins, etc and kerberos for authentication. The basic setup is working fine, I have been able to manually create accounts using the directory console and these accounts seem to work. Now what I want to do is automate the process of creating new accounts. I am writing a perl script which can be run by one of the server administrators, they supply a small number of arguments and it should create a new user in the directory server, and also create a principal in the kerberos.
I want them to be able to do this using their logged-in kerberos credentials, i.e., without having to enter and re-enter their passwords. My first attempt was to use perl modules Net::LDAP and Authen::SASL. I could not get this working so fell back to using ldap command line tools, but even these I cannot seem to get working! When using mozldap tools, as specified in the admin manual, I get the following:
$ /usr/lib64/mozldap/ldapmodify -h ldaphost.mycompany.com -D uid=eharmic,ou=mydept,dc=mycompany -o mech=GSSAPI -o authid=eharmic < ../ldapmod.txt
Bind Error: Invalid credentials
Bind Error: additional info: SASL(-14): authorization failure:
Using openldap tools I strike exactly the same problem:
$ ldapmodify -Y GSSAPI -H LDAP://ldaphost.mycompany.com -D uid=eharmic,ou=mydept,dc=mycompany -U eharmic < ../ldapmod.txt
SASL/GSSAPI authentication started
ldap_sasl_interactive_bind_s: Invalid credentials (49)
additional info: SASL(-14): authorization failure:
I believe I have set up the mapping correctly:
dn: cn=MyMapping,cn=mapping,cn=sasl,cn=config
objectClass: top
objectClass: nsSaslMapping
cn: MyMapping
nsSaslMapRegexString: ^(.+)@MYCOMPANY.COM
nsSaslMapBaseDNTemplate: ou=mydept,dc=mycompany
nsSaslMapFilterTemplate: (uid=1)
It must be getting reasonably far because after doing the above I can see the LDAP service ticket in my "klist" output.
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Sep 3, 2010
How do I know the reply was from caching-nameserver, master nameserver or slave nameserver in BIND DNS.? Can I trace the nameserver that replied my dns query? Like I have a master nameserver, a slave nameserver and a caching nameserver in my network. Is it possible to know that which of these servers replied my dns query? Also can i trace back that replying server exactly?
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