diff --git a/network/network_interface.py b/network/network_interface.py
index f04c3a3a..ae805d3c 100644
--- a/network/network_interface.py
+++ b/network/network_interface.py
@@ -21,3 +21,10 @@ class INetwork(ABC):
         :return: stream instance
         """
         pass
+
+    @abstractmethod
+    def listen(self, *args):
+        """
+        :param *args: one or many multiaddrs to start listening on
+        :return: true if at least one success
+        """
diff --git a/network/swarm.py b/network/swarm.py
index 8da3cb5e..50f7b31b 100644
--- a/network/swarm.py
+++ b/network/swarm.py
@@ -19,3 +19,10 @@ class Swarm(INetwork):
         :return: stream instance
         """
         pass
+
+    def listen(self, *args):
+        """
+        :param *args: one or many multiaddrs to start listening on
+        :return: true if at least one success
+        """
+        pass