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');
My company recently changed domains due to an ownership change and I am having an issue getting my LDAP bind to complete on the new domain.
My connect command creates the resource correctly but when I go to bind I get the error.
"Warning: ldap_bind(): Unable to bind to server: Strong(er) authentication required"
I am not using ldaps. I have confirmed I have the correct domain url for LDAP.
$ad is the resource, $dmun is the username with domain added and the $pw is the password.
$bd = ldap_bind($ad,$dmun,$pw);
It's an intranet site.
Try This code. This code worked for me
$username = 'username';
$password = 'password';
$ldap_host = "domain.com";
$ldap_port = 389;
$base_dn = "DC=domain,DC=com";
$filter = '(sAMAccountName=' . $username . ')';
$connect = ldap_connect($ldap_host, $ldap_port) or exit("Error : Could not connect to LDAP server.");
if ($connect) {
ldap_set_option($connect, LDAP_OPT_PROTOCOL_VERSION, 3);
ldap_set_option($connect, LDAP_OPT_REFERRALS, 0);
if (#$bind = ldap_bind($connect, "$username#domain.com", $password)) {
echo "Bind Successfull";
} else {
echo "Invalid Username / Password";
}
}
Problem is that I can connect LDAP through PHP but I cannot bind to it.
In Apache Directory Studio I can connect and bind without any problem but in PHP result is always "FAIL".
How to bind to LDAP with PHP?
<?php
$ldaphost = "ldaps://server.net";
$ldapport = 636;
$ldapconn = ldap_connect($ldaphost, $ldapport);
if($ldapconn){
echo 'Connected';
$ldapbind = ldap_bind($ldapconn);
if($ldapbind){
echo "OK";
} else {
echo "FAIL";
}
}
Try to set the protocol version
<?php
// Anonymous connection
$ldaphost = "ldaps://server.net";
$ldapport = 636;
$ldapconn = ldap_connect($ldaphost, $ldapport)
or die("Cannot connect to LDAP server.");
if ($ldapconn) {
echo 'Connected';
// set protocol version
ldap_set_option($ldapconn, LDAP_OPT_PROTOCOL_VERSION, 3);
// anonymous identification
$ldapbind = ldap_bind($ldapconn);
if ($ldapbind) {
echo 'OK';
} else {
echo 'FAIL';
}
}
?>
My aim is to change passwords in Active Directory through a web interface using PHP & IIS.
I have been following the instructions on http://www.ashleyknowles.net/2011/07/iis-php-and-ldaps-with-active-directory/
Prior to following these instructions I could not get a bind to the AD for an LDAPS connection, however after following these instructions it seems to successfully connect, yet gives an error of "Server is unwilling to perform" when I attempt to change the "unicodePwd" value.
Please note that the code below will successfully change any other value of a user in the AD.
<?php
$ldaprdn = 'CN=Admin User,OU=*******,OU=Staff,OU=********,DC=********,DC=*******,DC=******,DC=*****';
$ldappass = "*******"; // associated password
$ldapconn = ldap_connect("ldaps://***.***.***.***:636" ) or die("Could not connect to LDAP server.");
ldap_set_option($ldapconn, LDAP_OPT_PROTOCOL_VERSION, 3);
ldap_set_option($ldapconn, LDAP_OPT_REFERRALS, 0);
if ($ldapconn) {
// binding to ldap server
$ldapbind = ldap_bind($ldapconn, $ldaprdn, $ldappass);
// verify binding
if ($ldapbind) {
echo "LDAP bind successful...";
$username = '******';
$dn = "CN=Bob Smith,OU=******,OU=******,OU=******,DC=******,DC=******,DC=******,DC=******";
$newPassword = 'blah';
$newEntry = array('unicodePwd' => encodePwd($newPassword));
print_r($newEntry);
if(ldap_mod_replace($ldapconn, $dn, $newEntry)) {
print "<p>succeded</p>";
} else {
print "<p>failed</p>";
}
print_r(ldap_error($ldapconn));
} else {
echo "LDAP bind failed...";
print_r(ldap_error($ldapconn));
}
}
// Credit: http://www.cs.bham.ac.uk/~smp/resources/ad-passwds/
function encodePwd($pw) {
$newpw = '';
$pw = "\"" . $pw . "\"";
$len = strlen($pw);
for ($i = 0; $i < $len; $i++)
$newpw .= "{$pw{$i}}\000";
$newpw = base64_encode($newpw);
return $newpw;
}
?>
SOLVED!!
It turns out that by following the Ashley Knowles tutorial, I was successfully establishing a SSL connection over LDAP, however the error was occurring because of the password encoding.
The credit for the successful password encoding goes to hd42 on this forum post, which enabled me to modify my code accordingly.
Therefore, once you have correctly installed the certificates etc in the harddrive on the IIS server, this code will successfully modify a user password in Active Directory using PHP through an IIS web server (assuming that the $ldaprdn user has sufficient admin rights):
<?php
$ldaprdn = 'CN=Admin User,OU=*******,OU=Staff,OU=********,DC=********,DC=*******,DC=******,DC=*****';
$ldappass = "*******"; // associated password
$ldapconn = ldap_connect("ldaps://***.***.***.***:636" ) or die("Could not connect to LDAP server.");
ldap_set_option($ldapconn, LDAP_OPT_PROTOCOL_VERSION, 3);
ldap_set_option($ldapconn, LDAP_OPT_REFERRALS, 0);
if ($ldapconn) {
// binding to ldap server
$ldapbind = ldap_bind($ldapconn, $ldaprdn, $ldappass);
// verify binding
if ($ldapbind) {
echo "LDAP bind successful...";
$dn = "CN=Bob Smith,OU=******,OU=******,OU=******,DC=******,DC=******,DC=******,DC=******";
$newPassword = 'blah';
$newPassword = "\"" . $newPassword . "\"";
$newPass = mb_convert_encoding($newPassword, "UTF-16LE");
$newEntry = array('unicodePwd' => $newPass);
print_r($newEntry);
if(ldap_mod_replace($ldapconn, $dn, $newEntry)) {
print "<p>succeded</p>";
} else {
print "<p>failed</p>";
}
print_r(ldap_error($ldapconn));
} else {
echo "LDAP bind failed...";
print_r(ldap_error($ldapconn));
}
}