I successfully made a ldap_connect() but when I try ldap_bind() I'm getting the following message: Warning: ldap_bind(): Unable to bind to server: No such object in /var/www/... on line 25. What does this mean? I am doing something wrong or does the server has some configurations that prevent me to authenticate?
I am sure that the parameters for ldap_bind() are correct.
I solved the problem meanwhile.
The code was something like this:
$ldaphost = "ldaps://XXX";
$ldapport = YY;
$ldaprdn="uid=username,ou=OU1,ou=OU2,ou=OU3,dc=dc1,dc=dc2,dc=dc3,dc=dc4";
$ldappass="password";
// Connecting to LDAP
$ldapconn = ldap_connect($ldaphost, $ldapport)
or die("Could not connect to {$ldaphost}");
if ($ldapconn) {
// binding to ldap server
$ldapbind = ldap_bind($ldapconn, $ldaprdn, $ldappass);
// verify binding
if ($ldapbind) {
echo "LDAP bind successful...";
} else {
echo "LDAP bind failed...";
}
}
I was not setting the proper organisational units(ous). The usernamewas in other ou. After setting the correct one everything was fine.
Related
I have PHP 7.0 on CentOS 7. And I've installed php-ldap module as well.
# yum install -y php php-ldap
...
# php -m
...
ldap
...
Now the following PHP codes works:
<?php
$ldapconn = ldap_connect("dc.example.com", 389) or die("Could not connect to LDAP server.");
if ($ldapconn) {
$ldaprdn = 'username';
$ldappass = 'password';
$ldapbind = ldap_bind($ldapconn, $ldaprdn, $ldappass);
if ($ldapbind) {
echo "LDAP bind successful...";
} else {
echo "LDAP bind failed...";
}
}
$Result = ldap_search($ldapconn, "DC=example,DC=com", "(sAMAccountName=johndoe)");
$data = ldap_get_entries($ldapconn, $Result);
print_r($data);
?>
That works! I can connect, bind, and then even search for username johndoe and view his entire AD profile successfully.
Problem
But then I tried with SSL via port 636:
<?php
putenv('LDAPTLS_REQCERT=require');
putenv('LDAPTLS_CACERT=/var/www/html/servercert.der'); #I know, but this is just temporary location
$ldapconn = ldap_connect("dc.example.com", 636) or die("Could not connect to LDAP server.");
ldap_set_option($ldapconn, LDAP_OPT_DEBUG_LEVEL, 7);
ldap_set_option($ldapconn, LDAP_OPT_PROTOCOL_VERSION, 3);
ldap_set_option($ldapconn, LDAP_OPT_REFERRALS, 0);
if ($ldapconn) {
$ldaprdn = 'username';
$ldappass = 'password';
$ldapbind = ldap_bind($ldapconn, $ldaprdn, $ldappass);
if ($ldapbind) {
echo "LDAP bind successful...";
} else {
echo "LDAP bind failed...";
}
}
$Result = ldap_search($ldapconn, "DC=example,DC=com", "(sAMAccountName=johndoe)");
$data = ldap_get_entries($ldapconn, $Result);
print_r($data);
?>
I got this error:
Warning: ldap_bind(): Unable to bind to server: Can't contact LDAP server in /var/www/html/index.php on line 14
LDAP bind failed...
Warning: ldap_search(): Search: Can't contact LDAP server in......
What am I missing please?
Note:
We have port 636 opened on Windows AD Server and it is reachable from this PHP web server.
Server certificate is valid.
I figured out the ldap_connect should be as below:
ldap_connect("ldaps://dc.example.com:636")
And then all of sudden it worked!
Note: If it is on Apache, it is worth restarting it after changing to above code.
I was trying to check authentication with Active Directory in php. I tried the below code but I am getting an error. I followed the link https://www.php.net/manual/en/function.ldap-bind.php .
Code:
<?php
// using ldap bind
$ldaprdn = 'Administrator'; // ldap rdn or dn
$ldappass = '****'; // associated password
// connect to ldap server
$ldapconn = ldap_connect("ldap://dc1.example.com")
or die("Could not connect to LDAP server.");
if ($ldapconn) {
// binding to ldap server
$ldapbind = ldap_bind($ldapconn, $ldaprdn, $ldappass);
// verify binding
if ($ldapbind) {
echo "LDAP bind successful...";
} else {
echo "LDAP bind failed...";
}
}
?>
Error :
PHP Warning: ldap_bind(): Unable to bind to server: Invalid
credentials in /root/ldap1.php on line 14 LDAP bind failed...
I am doing some initial tests on my website to allow domain users to login to it using a ldap_bind. I am running this simple test with a form to send the username and password.
$ldapconn = ldap_connect("ldap://DC01.DOMAIN.NET") or die ("Could Not Connecet to LDAP Server");
if ($ldapconn) {
$ldapbind = ldap_bind($ldapconn, $user, $password);
if ($ldapbind) {
echo "Bind Success";
}
else {
echo "Bind Failure";
}
When I pass a valid username and password I get the following error: **Warning**: ldap_bind(); Unable to bind to server: Strong(er) authentication required... Bind Failure
I am currently running 7.4.12. Server the XAMPP is running on has a valid certificate for the domain. What am I missing?
Ok so it sounds like you need to connect using TLS.
There are two ways to use TLS for LDAP connections: LDAPS and StartTLS. That you're getting a response on regular port 389 means StartTLS is likely to be supported.
So the first thing to do is to set the protocol version. Then you need to tell it to initiate a TLS handshake.
So your example above would become something like this:
$ldapconn = ldap_connect("ldap://DC01.DOMAIN.NET") or die ("Could Not Connecet to LDAP Server");
if ($ldapconn) {
if (! ldap_set_option($ldapconn, LDAP_OPT_PROTOCOL_VERSION, 3)) {
die("Cannot set protocol v3");
}
if (! ldap_start_tls($ldapconn)) {
die("Cannot initiate TLS");
}
$ldapbind = ldap_bind($ldapconn, $user, $password);
if ($ldapbind) {
echo "Bind Success";
}
else {
echo "Bind Failure";
}
}
This assumes the server running PHP already trusts the CA that signed the LDAP server's certificate. If not, you'll also need to get the CA Cert, and either put it in the system trust store, or tell php to use it explicitly, before the call to ldap_start_tls:
ldap_set_option(LDAP_OPT_X_TLS_CACERTFILE, '/path/to/cacert.file');
I have this PHP code:
$ldap = ldap_connect("aaa.bbbbb.cc")
or die("Could not connect to LDAP server.");
ldap_set_option($ldap, LDAP_OPT_PROTOCOL_VERSION, 3);
ldap_set_option($ldap, LDAP_OPT_REFERRALS, 0);
$ldapbind = ldap_bind($ldap);
if ($ldapbind) {
echo "LDAP bind successful...";
} else {
echo "LDAP bind failed..."; //end up here
}
And I'm unable to make it bind successfully, I have tried all sorts of combinations.
Passing credentials, using an URI with "ldap://".
The following C# code works fine when binding to the same LDAP server:
var connection = new LdapConnection("aaa.bbbbb.cc");
connection.Bind();
The LDAP API for PHP seemssomewhat hard to debug, since if bind fails, you don't get any result, so I have no idea how to see what fails, if it cant access the server, bad credentials, or something else..
So, any ideas what could cause the PHP code to fail? is there something special I need to do?
(LDAP extension is enabled for PHP)
I've had problems with PHP LDAP before.
Luckily I found this in the doc comments:
ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, 7);
Which will give you verbose output when trying to open a connection and bind.
I usually do this:
ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, 7);
$ldap = ldap_connect("ldap://" . $domainController, $port);
$bind = #ldap_bind($ldap, $username . $accountSuffix, $password);
if (!$bind) {
// throw or something
echo ldap_error($ldap); // http://php.net/manual/en/function.ldap-error.php
}
Wikipedia has a nice write up of the various parts to the LDAP protocol.
I'm having issues performing an authenticated bind against the server. The issues doesn't appear to be in code however maybe a server issue.
Just so you know;
LDAP is enabled in Apache/PHP
I'm connecting as user#domain.com
The domain controller has LDAP running and an entry in the firewall (Windows Server 2008 R2)
I can perform an anonymous bind
I can bind anonymously using this script;
$ldapconn = ldap_connect("machinename.domain.com")
or die("Could not connect to LDAP server.");
if ($ldapconn) {
// binding anonymously
$ldapbind = ldap_bind($ldapconn);
if ($ldapbind) {
echo "LDAP bind anonymous successful...";
} else {
echo "LDAP bind anonymous failed...";
}
}
However when I try to do an authenticated bind using this script, it fails.
// Authenticated Bind
$ldaprdn = 'username#domain.com'; // ldap rdn or dn
$ldappass = 'password'; // associated password
// connect to ldap server
$ldapconn = ldap_connect("machinename.domain.com")
or die("Could not connect to LDAP server.");
if ($ldapconn) {
// binding to ldap server
$ldapbind = ldap_bind($ldapconn, $ldaprdn, $ldappass);
// verify binding
if ($ldapbind) {
echo "LDAP bind successful...";
} else {
echo "LDAP bind failed...";
}
}
Where am I going wrong?
May your LDAP requires a DN as login. For retrive the DN make a search of the user uid first.
$search = ldap_search($ldapconn, $baseDn, $filter, $attributes);
if ($search) {
$entries = ldap_get_entries($ldapconn, 'uid=' . $ldaprdn);// Here $ldaprdn is the email
if (is_array($entries)) {
$ldaprdn = $entries[0]['dn']; // Get the DN of the user
}
}
$ldapbind = ldap_bind($ldapconn, $ldaprdn, $ldappass);
// ....
NOTE: You should escape $ldaprdn for avoid LDAP injection attacks.
Okay, after much investigation I have turned on error info using ldap_errno() and ldap_error() and found it bringing back the error 'Strong(er) authentication required' have discovered two possible solutions;
Adjust Group Policy Settings
Negotiate Signing (Network security: LDAP client signing requirements)
No signing requirements (Domain Controller: LDAP server signing requirements)
Result: Managed to bind successfully and when I enter the username or password incorrectly and it throws an 'Invalid credentials' as expected.
Enable LDAP over SSL (LDAPS)
http://www.christowles.com/2010/11/enable-ldap-over-ssl-ldaps-on-windows.html
http://support.microsoft.com/kb/321051