diff --git a/drawbridge/net_queue.py b/drawbridge/net_queue.py
index 9952385..427c948 100644
--- a/drawbridge/net_queue.py
+++ b/drawbridge/net_queue.py
@@ -35,20 +35,21 @@ class NetQueue:
 
     def _create_rule(self) -> iptc.Rule:
         rule = iptc.Rule()
-        match = iptc.Match(rule, self.protocol)
         target = iptc.Target(rule, "NFQUEUE")
         target.set_parameter("queue-num", str(self.queue))
-        rule.add_match(match)
+        if self.protocol:
+            match = iptc.Match(rule, self.protocol)
+            rule.add_match(match)
         rule.target = target
         return rule
 
     def write_rule(self):
-        table = iptc.Table(iptc.Table.FILTER)
+        table = iptc.Table(iptc.Table.MANGLE)
         chain = iptc.Chain(table, "INPUT")
         chain.insert_rule(self.rule)
 
     def delete_rule(self):
-        table = iptc.Table(iptc.Table.FILTER)
+        table = iptc.Table(iptc.Table.MANGLE)
         chain = iptc.Chain(table, "INPUT")
         try:
             chain.delete_rule(self.rule)
@@ -82,7 +83,7 @@ class NetQueue:
     def validate_protocol(protocol: Optional[str]) -> Union[str, None]:
         if protocol:
             try:
-                Protocols(protocol)
+                Protocols[protocol]
             except KeyError:
                 raise KeyError(f"Invalid protocol: {protocol}")
         return protocol