“connection rejected by remote interface” connecting to Firebird 3 with PDO

Question

Try code below, but cause exception - SQLSTATE[HY000] [335544421] connection rejected by remote interface:

try {
    $dbh = new PDO("firebird:dbname=localhost/3050:empty", "SYSDBA", "masterkey");
    $dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    $sth = $dbh->query('SELECT idmspos, idmsqnt, cdmsval from svc$dms'); 
    $sth->setFetchMode(PDO::FETCH_ASSOC); 

    while($row = $sth->fetch()) {  
        echo $row['idmspos']." ".$row['idmsqnt']." ".$row['cdmsval']."<br>";  
    }

    $dbh = null;
}
catch(PDOException $e) {
    $dbh = null;
    echo $e->getMessage();
}

Specs:

Linux 3.2.0-4-686-pae #1 SMP Debian 3.2.65-1+deb7u1 i686 GNU/Linux
PHP 5.6
php5-interbase
Firebird 3 from official site. Server is worked, can connect to him from local and remote machine.

Answer 1

Find firebird.conf, uncomment (if using fbclient 2.x) and change the following parameters to disable WireCrypt and set higher priority for legacy authentication:

WireCrypt = Disabled
AuthServer = Legacy_Auth, Srp, Win_Sspi
AuthClient = Legacy_Auth, Srp, Win_Sspi

Answer 2

You need to change the Firebird service as follows:

1. Install Firebird
2. Go search Services-> Firebird
3. Right click on Firebird->Properties-> LogOn-> and tick checkbox having option as "Allows services to interact with Desktop"

4. and then click on Restart service

   You are now able to connect with firebird successfully in case of Firebird 2.1.