diff --git a/src/usr/local/www/firewall_rules_edit.php b/src/usr/local/www/firewall_rules_edit.php
index 4c64853ba3..3918866254 100644
--- a/src/usr/local/www/firewall_rules_edit.php
+++ b/src/usr/local/www/firewall_rules_edit.php
@@ -1291,7 +1291,7 @@ foreach (['src' => 'Source', 'dst' => 'Destination'] as $type => $name) {
 		$type,
 		$name .' Address',
 		$pconfig[$type]
-	))->addMask($type .'mask', $pconfig[$type.'mask'])->setPattern('[0-9, a-z, A-Z and .');
+	))->addMask($type .'mask', $pconfig[$type.'mask'])->setPattern('[a-zA-Z0-9\_\.\:]+');
 
 	$section->add($group);
 
diff --git a/src/usr/local/www/services_igmpproxy_edit.php b/src/usr/local/www/services_igmpproxy_edit.php
index 371b85a58b..ff86376c5f 100644
--- a/src/usr/local/www/services_igmpproxy_edit.php
+++ b/src/usr/local/www/services_igmpproxy_edit.php
@@ -257,7 +257,7 @@ foreach ($item as $ww) {
 		null,
 		$address,
 		['placeholder' => 'Address']
-	))->sethelp($tracker == $rows ? 'Network/CIDR':null)->addMask('address_subnet' . $tracker, $address_subnet)->setWidth(4)->setPattern('[0-9, a-z, A-Z and .');
+	))->sethelp($tracker == $rows ? 'Network/CIDR':null)->addMask('address_subnet' . $tracker, $address_subnet)->setWidth(4)->setPattern('[a-zA-Z0-9\_\.\:]+');
 
 	$group->add(new Form_Button(
 		'deleterow' . $counter,
diff --git a/src/usr/local/www/services_router_advertisements.php b/src/usr/local/www/services_router_advertisements.php
index 1693b4a302..2222ca5b3b 100644
--- a/src/usr/local/www/services_router_advertisements.php
+++ b/src/usr/local/www/services_router_advertisements.php
@@ -372,7 +372,7 @@ for ($idx=1; $idx<=3; $idx++) {
 		'radns' . $idx,
 		'Server ' . $idx,
 		$pconfig['radns' . $idx]
-	))->setPattern('[0-9, a-z, A-Z and .')->setHelp(($idx < 3) ? '':'Leave blank to use the system default DNS servers - this interface\'s IP if DNS Forwarder or Resolver is enabled, otherwise the servers configured on the General page');
+	))->setPattern('[a-zA-Z0-9\_\.\:]+')->setHelp(($idx < 3) ? '':'Leave blank to use the system default DNS servers - this interface\'s IP if DNS Forwarder or Resolver is enabled, otherwise the servers configured on the General page');
 }
 
 $section->addInput(new Form_Input(