<?
///////////////////////////////////////////////////////////////////////////
//
//    DNSBL - Spam IP address checker.
//    Copyright (C) 2011 Alexey A.Znayev
//
//    This program is free software: you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation, either version 3 of the License, or
//    (at your option) any later version.
//
//    This program is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
//    Alexey A.Znayev, znaeff@mail.ru, http://xbsoft.org, http://xbsoft.ru
//
///////////////////////////////////////////////////////////////////////////

// This file contains public class DNSBL

// This class performs IP address check in spam blocking lists as described
// on http://ru.wikipedia.org/wiki/RBL

class DNSBL {

    private $_aCheckers = array(
	    'spamhaus' 	=> '.zen.spamhaus.org',
	    'spamcop' 	=> '.bl.spamcop.net',
	    'dsbl' 	=> '.list.dsbl.org',
	    'ordb' 	=> '.relays.ordb.org',
	    'sorbs' 	=> '.dnsbl.sorbs.net',
	    'njabl' 	=> '.dnsbl.njabl.org'
    ); // AZ - key 'all' is illegal
    
    private $_sDefaultChecker = 'spamhaus';

///////////////////////////////////////////////////////////////////////////
// CheckSpamIP - check IP for spam in checkers : given, default or all available (may be slow)
// parameters:
// string $ip - ip address
// string $checker - checker name or 'all' or nothing
// returns:
// true when IP exitsts in spam-lists of $checker or at least one of all checkers
// false when not or when ip address is local or not correct
// NOTE: method uses checkdnsrr(), this function is not available on Windows platforms in PHP < 5.3.0
    public function CheckSpamIP($ip, $checker = ''){
	if(empty($ip)) return false;
	if(preg_match('/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/', $ip) != 1) return false;
	$octets = explode('.', $ip);
	if($octets[0] == '127') return false;
	if($octets[0] == '10') return false;
	if($octets[0] == '192' && $octets[0] == '168') return false;
	if($octets[0] == '169' && $octets[0] == '254') return false;	// ms windows
	if((int)$octets[0] > 255 || (int)$octets[1] > 255 || (int)$octets[2] > 255 || (int)$octets[3] > 255 ) return false;
	$ret_val = false;
	$res_dns = array();
	$PTR = implode(array_reverse($octets), '.');
	//$type = 'A';
	if($checker === 'all'){
	    foreach(array_values($this->_aCheckers) as $c){
		//$ret_val = $ret_val || checkdnsrr($PTR . $c, $type);
		$ret_val = $ret_val || $this->_CheckDNSAnswer(dns_get_record($PTR . $c, DNS_A));
		if($ret_val) break;
	    }
	}else if(array_key_exists($checker, $this->_aCheckers)){
	    //$ret_val = checkdnsrr($PTR . $this->_aCheckers[$checker], $type);
    	    $ret_val = $this->_CheckDNSAnswer(dns_get_record($PTR . $this->_aCheckers[$checker], DNS_A));
	}else{
	    //$ret_val = checkdnsrr($PTR . $this->_aCheckers[$this->_sDefaultChecker], $type);
    	    $ret_val = $this->_CheckDNSAnswer(dns_get_record($PTR . $this->_aCheckers[$this->_sDefaultChecker], DNS_A));
	}
	return $ret_val;
    }

///////////////////////////////////////////////////////////////////////////
// GetCheckers - gets list of available checker names
// returns:
// array of strings
    public function GetCheckers(){
	return array_keys($this->_aCheckers);
    }        

///////////////////////////////////////////////////////////////////////////
// GetDefaultChecker - gets default checker name
// returns:
// string
    public function GetDefaultChecker(){
	return $this->_sDefaultChecker;
    }

///////////////////////////////////////////////////////////////////////////
// SetDefaultChecker - sets default checker name
// parameters:
// string $new_checker - new default checker name
// returns:
// true when success
// false when failed ($new_checker is not in the list of available checker names)
    public function SetDefaultChecker($new_checker){
	if(array_key_exists($new_checker, $this->_aCheckers)){
	    $this->_sDefaultChecker = $new_checker;
	    return true;
	}else{
	    return false;
	}
    }

// private methods

///////////////////////////////////////////////////////////////////////////
// _CheckDNSAnswer - checks DNS-server answer for 127.0.0.* values
// returns:
// true when success
// false when failed
    private function _CheckDNSAnswer($dns_answer){
	if(!is_array($dns_answer)) return false;
	$len = count($dns_answer);
	if($len <= 0) return false;
	for($i=0; $i<$len; $i++){
	    $obj = $dns_answer[$i];
	    if(!(is_object($obj) || is_array($obj))) return false;
	    $ip_str = $obj['ip'];
	    if(!is_string($ip_str)) return false;
	    $pos = strpos($ip_str, '127.0.0.');
	    if($pos !== false) return true;
	}
	return false;
    }        

} // end of class DNSBL

?>
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">slmgr /ipk &lt;Produkt_key&gt; <br />slmgr /ato </code></pre></div><!-- .entry-content --><footer class="entry-meta"> <span class="cat-links"> <span class="entry-utility-prep entry-utility-prep-cat-links">Veröffentlicht unter</span> <a href="https://blog.bl-its.at/?cat=1" rel="category">Allgemein</a>, <a href="https://blog.bl-its.at/?cat=73" rel="category">Betreibssysteme</a>, <a href="https://blog.bl-its.at/?cat=5" rel="category">MS Windows</a>, <a href="https://blog.bl-its.at/?cat=338" rel="category">Windows Server 2019</a> </span> <span class="sep"> | </span> <span class="tag-links"> <span class="entry-utility-prep entry-utility-prep-tag-links">Verschlagwortet mit</span> <a href="https://blog.bl-its.at/?tag=aktivierung" rel="tag">Aktivierung</a>, <a href="https://blog.bl-its.at/?tag=microsoft-windows-server-2019" rel="tag">Microsoft Windows Server 2019</a>, <a href="https://blog.bl-its.at/?tag=windows-2" rel="tag">Windows</a>, <a href="https://blog.bl-its.at/?tag=windows-server-2019" rel="tag">Windows Server 2019</a> </span> <span class="sep"> | </span> <span class="comments-link"><a href="https://blog.bl-its.at/?p=1121#respond"><span class="leave-reply">Schreibe eine Antwort</span></a></span></footer><!-- .entry-meta --></article><!-- #post-1121 --><article id="post-1100" class="post-1100 post type-post status-publish format-standard hentry category-allgemein category-betriebessystem category-windows category-ms-windows-server-2016 category-ms-windows-server-2019 category-server tag-mstsc-exe tag-rdp tag-rdp-gateway tag-remotedesktop tag-remotedesktopgatewayserver tag-remotedesktopverbindung tag-windows-server-2016 tag-windows-server-2019"><header class="entry-header"><h1 class="entry-title"><a href="https://blog.bl-its.at/?p=1100" rel="bookmark">RDP-Verbindung über Windows Server 2016+ Remotedesktopgateway-Server ergibt Fehler am Client</a></h1><div class="entry-meta"> <span class="sep">Veröffentlicht am </span><a href="https://blog.bl-its.at/?p=1100" title="15:33" rel="bookmark"><time class="entry-date" datetime="2019-05-15T15:33:53+01:00">15. Mai 2019</time></a><span class="by-author"> <span class="sep"> von </span> <span class="author vcard"><a class="url fn n" href="https://blog.bl-its.at/?author=1" title="Zeige alle Artikel von admin" rel="author">admin</a></span></span></div><!-- .entry-meta --><div class="comments-link"> <a href="https://blog.bl-its.at/?p=1100#respond"><span class="leave-reply">Antworten</span></a></div></header><!-- .entry-header --><div class="entry-content"><h2>Problem:</h2><p>Beim Verbindungsversuch mit dem Microsoft Remotedesktopverbindung (mstsc.exe), über einen Windows Server 2016+ Remotedesktopgateway Server, wird die folgende Fehlermeldung angezeigt:</p><figure class="wp-block-image"><img loading="lazy" width="559" height="134" src="https://blog.bl-its.at/wp-content/uploads/2019/05/RDP-Error.png" alt="" class="wp-image-1103" srcset="https://blog.bl-its.at/wp-content/uploads/2019/05/RDP-Error.png 559w, https://blog.bl-its.at/wp-content/uploads/2019/05/RDP-Error-300x72.png 300w, https://blog.bl-its.at/wp-content/uploads/2019/05/RDP-Error-500x120.png 500w" sizes="(max-width: 559px) 100vw, 559px" /></figure><h2 data-tadv-p="keep">Lösung:</h2><p>Diese Einstellungen müssen am Windows-Client durchgeführt werden.</p><ol><li data-tadv-p="keep">öffne den Registrierungseditor (regedit.exe)</li><li data-tadv-p="keep">navigiere zu diesem Schlüssel:<pre>HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client</pre></li><li data-tadv-p="keep">füge folgenden <strong>REG-DWORD</strong> (32-Bit) hinzu:<pre>RDGClientTransport&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1</pre></li><li data-tadv-p="keep">Registry-Editor schließen</li><li data-tadv-p="keep">Remotedesktopverbindung schließen. Um sicher zu gehen, Windows neu starten.</li></ol><p>Schlussendlich sollte der Schlüssel so aussehen:</p><figure class="wp-block-image"><img loading="lazy" width="505" height="76" src="https://blog.bl-its.at/wp-content/uploads/2019/05/Regeidt-RDP-Client.png" alt="" class="wp-image-1104" srcset="https://blog.bl-its.at/wp-content/uploads/2019/05/Regeidt-RDP-Client.png 505w, https://blog.bl-its.at/wp-content/uploads/2019/05/Regeidt-RDP-Client-300x45.png 300w, https://blog.bl-its.at/wp-content/uploads/2019/05/Regeidt-RDP-Client-500x75.png 500w" sizes="(max-width: 505px) 100vw, 505px" /></figure><blockquote><p>Getesten von Windows 10, per MSTSC.EXE, über Remotedesktopgateway-Server (Windows Server 2019 Standard) auf einen Windows Server 2019 Standard. Das SSL-Zertifikat wurde von Let&#8217;s Encrypt bezogen.</p></blockquote></div><!-- .entry-content --><footer class="entry-meta"> <span class="cat-links"> <span class="entry-utility-prep entry-utility-prep-cat-links">Veröffentlicht unter</span> <a href="https://blog.bl-its.at/?cat=1" rel="category">Allgemein</a>, <a href="https://blog.bl-its.at/?cat=73" rel="category">Betreibssysteme</a>, <a href="https://blog.bl-its.at/?cat=5" rel="category">MS Windows</a>, <a href="https://blog.bl-its.at/?cat=324" rel="category">MS Windows Server 2016</a>, <a href="https://blog.bl-its.at/?cat=325" rel="category">MS Windows Server 2019</a>, <a href="https://blog.bl-its.at/?cat=20" rel="category">Server</a> </span> <span class="sep"> | </span> <span class="tag-links"> <span class="entry-utility-prep entry-utility-prep-tag-links">Verschlagwortet mit</span> <a href="https://blog.bl-its.at/?tag=mstsc-exe" rel="tag">mstsc.exe</a>, <a href="https://blog.bl-its.at/?tag=rdp" rel="tag">RDP</a>, <a href="https://blog.bl-its.at/?tag=rdp-gateway" rel="tag">RDP Gateway</a>, <a href="https://blog.bl-its.at/?tag=remotedesktop" rel="tag">Remotedesktop</a>, <a href="https://blog.bl-its.at/?tag=remotedesktopgatewayserver" rel="tag">Remotedesktopgatewayserver</a>, <a href="https://blog.bl-its.at/?tag=remotedesktopverbindung" rel="tag">Remotedesktopverbindung</a>, <a href="https://blog.bl-its.at/?tag=windows-server-2016" rel="tag">Windows SErver 2016</a>, <a href="https://blog.bl-its.at/?tag=windows-server-2019" rel="tag">Windows Server 2019</a> </span> <span class="sep"> | </span> <span class="comments-link"><a href="https://blog.bl-its.at/?p=1100#respond"><span class="leave-reply">Schreibe eine Antwort</span></a></span></footer><!-- .entry-meta --></article><!-- #post-1100 --></div><!-- #content --></section><!-- #primary --><div id="secondary" class="widget-area" role="complementary"><aside id="calendar-2" class="widget widget_calendar"><div id="calendar_wrap" 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