diff --git a/groups/os/debian.py b/groups/os/debian.py
index 69bb0d2..270fa60 100644
--- a/groups/os/debian.py
+++ b/groups/os/debian.py
@@ -47,6 +47,14 @@
                 'mtr-tiny': {},
             },
         },
+        # iperf3
+        'nftables': {
+            'input': {
+                'tcp dport 5201 accept',
+                'udp dport 5201 accept',
+            },
+        },
+
     },
     'os': 'debian',
     'pip_command': 'pip3',