diff --git a/SourceQuery/BaseRcon.php b/SourceQuery/BaseRcon.php
new file mode 100644
index 0000000..a2b5ed3
--- /dev/null
+++ b/SourceQuery/BaseRcon.php
@@ -0,0 +1,28 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * @author Pavel Djundik
+ *
+ * @link https://xpaw.me
+ * @link https://github.com/xPaw/PHP-Source-Query
+ *
+ * @license GNU Lesser General Public License, version 2.1
+ *
+ * @internal
+ */
+
+namespace xPaw\SourceQuery;
+
+/**
+ * Base RCON interface
+ */
+abstract class BaseRcon
+{
+	abstract public function Close( ) : void;
+	abstract public function Open( ) : void;
+	abstract public function Write( int $Header, string $String = '' ) : bool;
+	abstract public function Read( ) : Buffer;
+	abstract public function Command( string $Command ) : string;
+	abstract public function Authorize( string $Password ) : void;
+}
diff --git a/SourceQuery/GoldSourceRcon.php b/SourceQuery/GoldSourceRcon.php
index a4db608..c88b845 100644
--- a/SourceQuery/GoldSourceRcon.php
+++ b/SourceQuery/GoldSourceRcon.php
@@ -21,7 +21,7 @@
 /**
  * Class GoldSourceRcon
  */
-class GoldSourceRcon
+class GoldSourceRcon extends BaseRcon
 {
 	/**
 	 * Points to socket class
diff --git a/SourceQuery/SourceQuery.php b/SourceQuery/SourceQuery.php
index b678438..43695ec 100644
--- a/SourceQuery/SourceQuery.php
+++ b/SourceQuery/SourceQuery.php
@@ -66,7 +66,7 @@ class SourceQuery
 	/**
 	 * Points to rcon class
 	 */
-	private SourceRcon|GoldSourceRcon|null $Rcon = null;
+	private ?BaseRcon $Rcon = null;
 
 	/**
 	 * Points to socket class
diff --git a/SourceQuery/SourceRcon.php b/SourceQuery/SourceRcon.php
index cffccc5..0cccfd8 100644
--- a/SourceQuery/SourceRcon.php
+++ b/SourceQuery/SourceRcon.php
@@ -21,7 +21,7 @@
 /**
  * Class SourceRcon
  */
-class SourceRcon
+class SourceRcon extends BaseRcon
 {
 	/**
 	 * Points to socket class