diff --git a/tests/test_config_api.py b/tests/test_config_api.py
index 27036ee..a448d07 100644
--- a/tests/test_config_api.py
+++ b/tests/test_config_api.py
@@ -371,6 +371,8 @@ async def test_invalid_option():
         PortOption('a', '', allow_zero=True, allow_wellknown=False, allow_registred=True, allow_private=True)
     with pytest.raises(ValueError):
         PortOption('a', '', allow_zero=False, allow_wellknown=False, allow_registred=False, allow_private=False)
+    with pytest.raises(ValueError):
+        PortOption('a', '', 'tcp:80')
     NetworkOption('a', '')
     with pytest.raises(ValueError):
         NetworkOption('a', '', 'string')
diff --git a/tests/test_config_ip.py b/tests/test_config_ip.py
index 947b5dc..e1e541a 100644
--- a/tests/test_config_ip.py
+++ b/tests/test_config_ip.py
@@ -295,6 +295,16 @@ async def test_port(config_type):
     assert not await list_sessions()
 
 
+@pytest.mark.asyncio
+async def test_port_protocol(config_type):
+    a = PortOption('a', '', allow_protocol=True)
+    od = OptionDescription('od', '', [a])
+    async with await Config(od) as cfg:
+        await cfg.option('a').value.set('80')
+        await cfg.option('a').value.set('tcp:80')
+    assert not await list_sessions()
+
+
 @pytest.mark.asyncio
 async def test_port_range(config_type):
     a = PortOption('a', '', allow_range=True)
diff --git a/tiramisu/option/portoption.py b/tiramisu/option/portoption.py
index 59db844..c277344 100644
--- a/tiramisu/option/portoption.py
+++ b/tiramisu/option/portoption.py
@@ -48,12 +48,15 @@ class PortOption(StrOption):
                  allow_zero: bool=False,
                  allow_wellknown: bool=True,
                  allow_registred: bool=True,
+                 allow_protocol: bool=False,
                  allow_private: bool=False,
                  **kwargs) -> None:
 
         extra = {'_allow_range': allow_range,
+                 '_allow_protocol': allow_protocol,
                  '_min_value': None,
-                 '_max_value': None}
+                 '_max_value': None,
+                 }
         ports_min = [0, 1, 1024, 49152]
         ports_max = [0, 1023, 49151, 65535]
         is_finally = False
@@ -81,7 +84,9 @@ class PortOption(StrOption):
     def validate(self,
                  value: str) -> None:
         super().validate(value)
-        if self.impl_get_extra('_allow_range') and ":" in str(value):
+        if self.impl_get_extra('_allow_protocol') and (value.startswith('tcp:') or value.startswith('udp:')):
+            value = [value[4:]]
+        elif self.impl_get_extra('_allow_range') and ":" in str(value):
             value = value.split(':')
             if len(value) != 2:
                 raise ValueError(_('range must have two values only'))
@@ -98,7 +103,13 @@ class PortOption(StrOption):
     def second_level_validation(self,
                                 value: str,
                                 warnings_only: bool) -> None:
-        for val in value.split(':'):
+        if self.impl_get_extra('_allow_protocol') and (value.startswith('tcp:') or value.startswith('udp:')):
+            value = [value[4:]]
+        elif ':' in value:
+            value = value.split(':')
+        else:
+            value = [value]
+        for val in value:
             val = int(val)
             if not self.impl_get_extra('_min_value') <= val <= self.impl_get_extra('_max_value'):
                 if warnings_only: