diff --git a/src/messenger/webim/libs/common.php b/src/messenger/webim/libs/common.php
index 1722f30f..c3504b90 100644
--- a/src/messenger/webim/libs/common.php
+++ b/src/messenger/webim/libs/common.php
@@ -527,6 +527,7 @@ $settings = array(
 	'geolinkparams' => 'width=440,height=100,toolbar=0,scrollbars=0,location=0,status=1,menubar=0,resizable=1',
 	'online_timeout' => 30,		/* Timeout (in seconds) when online operator becomes offline */
 	'max_uploaded_file_size' => 100000,
+	'max_connections_from_one_host' => 10,
 
 	'email' => '',				/* inbox for left messages */
 	'left_messages_locale' => $home_locale,
diff --git a/src/messenger/webim/locales/en/properties b/src/messenger/webim/locales/en/properties
index 6f7c406e..d73814f5 100644
--- a/src/messenger/webim/locales/en/properties
+++ b/src/messenger/webim/locales/en/properties
@@ -365,6 +365,8 @@ settings.host=URL of your website
 settings.logo.description=Enter http address of your company logo
 settings.logo=Your company logo
 settings.no.title=Please enter your company title
+settings.onehostconnections.description=0 allows any number of connections
+settings.onehostconnections=Max number of threads from one address
 settings.saved=Changes saved
 settings.survey.askgroup.description=Show/hide department selection field in the survey
 settings.survey.askgroup=Allows visitor to choose department/group 
@@ -378,6 +380,7 @@ settings.usercanchangename=Allows users to change their names
 settings.usernamepattern.description=How to build visitor identifying string from {name}, {id} or {addr}. Default: {name}
 settings.usernamepattern=Visitor's identifier
 settings.wrong.email=Enter proper email address
+settings.wrong.onehostconnections="Max number of threads" field should be number
 site.title=openwebim.org
 site.url=http://openwebim.org
 statistics.dates=Select dates
diff --git a/src/messenger/webim/operator/settings.php b/src/messenger/webim/operator/settings.php
index 23664a3e..37cb776d 100644
--- a/src/messenger/webim/operator/settings.php
+++ b/src/messenger/webim/operator/settings.php
@@ -34,7 +34,7 @@ if($handle = opendir($stylesfolder)) {
 
 $options = array(
 		'email', 'title', 'logo', 'hosturl', 'usernamepattern',
-		'chatstyle', 'chattitle', 'geolink', 'geolinkparams');
+		'chatstyle', 'chattitle', 'geolink', 'geolinkparams', 'max_connections_from_one_host');
 
 loadsettings();
 $params = array();
@@ -51,6 +51,7 @@ if (isset($_POST['email']) && isset($_POST['title']) && isset($_POST['logo'])) {
     $params['chattitle'] = getparam('chattitle');
     $params['geolink'] = getparam('geolink');
 	$params['geolinkparams'] = getparam('geolinkparams');
+	$params['max_connections_from_one_host'] = trim(getparam('onehostconnections'));
 
 	$params['chatstyle'] = verifyparam("chatstyle","/^\w+$/", $params['chatstyle']);
 	if(!in_array($params['chatstyle'], $stylelist)) {
@@ -60,6 +61,10 @@ if (isset($_POST['email']) && isset($_POST['title']) && isset($_POST['logo'])) {
     if($params['email'] && !is_valid_email($params['email'])) {
         $errors[] = getlocal("settings.wrong.email");
     }
+    
+    if(!preg_match("/^\d+$/",$params['max_connections_from_one_host'])) {
+        $errors[] = getlocal("settings.wrong.onehostconnections");
+	}
 
     if($params['geolinkparams']) {
     	foreach(split(",", $params['geolinkparams']) as $oneparam) {
@@ -88,6 +93,7 @@ $page['formgeolinkparams'] = topage($params['geolinkparams']);
 $page['formusernamepattern'] = topage($params['usernamepattern']);
 $page['formchatstyle'] = $params['chatstyle'];
 $page['formchattitle'] = topage($params['chattitle']);
+$page['formonehostconnections'] = $params['max_connections_from_one_host'];
 $page['availableStyles'] = $stylelist;
 $page['stored'] = isset($_GET['stored']);
 
diff --git a/src/messenger/webim/view/settings.php b/src/messenger/webim/view/settings.php
index 19dad91e..e12f8d04 100644
--- a/src/messenger/webim/view/settings.php
+++ b/src/messenger/webim/view/settings.php
@@ -116,6 +116,15 @@ require_once('inc_errors.php');
 			<br clear="left"/>
 		</div>
 
+		<div class="field">
+			<div class="flabel"><?php echo getlocal('settings.onehostconnections') ?></div>
+			<div class="fvalue">
+				<input type="text" name="onehostconnections" size="10" value="<?php echo form_value('onehostconnections') ?>" class="formauth"/>
+			</div>
+			<div class="fdescr"> &mdash; <?php echo getlocal('settings.onehostconnections.description') ?></div>
+			<br clear="left"/>
+		</div>
+
 		<div class="field">
 			<div class="flabel"><?php echo getlocal('settings.chatstyle') ?></div>
 			<div class="fvalue">