diff --git a/backend/binsrc/classes/nfqueue.cpp b/backend/binsrc/classes/nfqueue.cpp
index 02de950..cb9eccb 100644
--- a/backend/binsrc/classes/nfqueue.cpp
+++ b/backend/binsrc/classes/nfqueue.cpp
@@ -134,7 +134,8 @@ class PktRequest {
 		l4_proto = fill_l4_info();
 		#ifdef DEBUG
 		if (tcp){			
-			cerr << "[DEBUG] NEW_PACKET " << (is_input?"-> IN ":"<- OUT") << " [SEQ: " << tcp->seq() << "] \t[ACK: " << tcp->ack_seq() << "] \t[SIZE: " << data_size() << "]" << endl;
+			cerr << "[DEBUG] NEW_PACKET " << (is_input?"-> IN ":"<- OUT")  << " [SIZE: " << data_size() << "] FLAGS: " << (tcp->get_flag(Tins::TCP::FIN)?"FIN ":"") << (tcp->get_flag(Tins::TCP::SYN)?"SYN ":"") << (tcp->get_flag(Tins::TCP::RST)?"RST ":"") << (tcp->get_flag(Tins::TCP::ACK)?"ACK ":"") << (tcp->get_flag(Tins::TCP::PSH)?"PSH ":"") << endl;
+			cerr << "[SEQ: " << tcp->seq() << "] [ACK: " << tcp->ack_seq() << "]" << " [WIN: " << tcp->window() << "] [FLAGS: " << tcp->flags() << "]\n" << endl;
 		}
 		#endif
 	}
@@ -237,7 +238,8 @@ class PktRequest {
 		}
 		#ifdef DEBUG
 		size_t new_size = inner_data_size(tcp);
-		cerr << "[DEBUG] FIXED PKT  " << (is_input?"-> IN ":"<- OUT") << " [SEQ: " << tcp->seq() << "] \t[ACK: " << tcp->ack_seq() << "] \t[SIZE: " << new_size << "]" << endl;
+		cerr << "[DEBUG] FIXED PKT  " << (is_input?"-> IN ":"<- OUT")  << " [SIZE: " << data_size() << "] FLAGS: " << (tcp->get_flag(Tins::TCP::FIN)?"FIN ":"") << (tcp->get_flag(Tins::TCP::SYN)?"SYN ":"") << (tcp->get_flag(Tins::TCP::RST)?"RST ":"") << (tcp->get_flag(Tins::TCP::ACK)?"ACK ":"") << (tcp->get_flag(Tins::TCP::PSH)?"PSH ":"") << endl;
+		cerr << "[SEQ: " << tcp->seq() << "] [ACK: " << tcp->ack_seq() << "]" << " [WIN: " << tcp->window() << "] [FLAGS: " << tcp->flags() << "]\n" << endl;
 		#endif
 	}
 
@@ -360,7 +362,10 @@ class PktRequest {
 				}
 				nfq_nlmsg_verdict_put_pkt(nlh_verdict, packet.data(), packet.size());
 				#ifdef DEBUG
-				cerr << "[DEBUG] MANGLEDPKT " << (is_input?"-> IN ":"<- OUT") << " [SIZE: " << packet.size()-header_size() << "]" << endl;
+				if (tcp){
+					cerr << "[DEBUG] MANGLEDPKT " << (is_input?"-> IN ":"<- OUT")  << " [SIZE: " << data_size() << "] FLAGS: " << (tcp->get_flag(Tins::TCP::FIN)?"FIN ":"") << (tcp->get_flag(Tins::TCP::SYN)?"SYN ":"") << (tcp->get_flag(Tins::TCP::RST)?"RST ":"") << (tcp->get_flag(Tins::TCP::ACK)?"ACK ":"") << (tcp->get_flag(Tins::TCP::PSH)?"PSH ":"") << endl;
+					cerr << "[SEQ: " << tcp->seq() << "] [ACK: " << tcp->ack_seq() << "]" << " [WIN: " << tcp->window() << "] [FLAGS: " << tcp->flags() << "]\n" << endl;
+				}
 				#endif
 				if (tcp && ack_seq_offset && packet.size() != _original_size){
 					if (is_input){
diff --git a/backend/modules/nfproxy/nftables.py b/backend/modules/nfproxy/nftables.py
index 5bb1050..046d98d 100644
--- a/backend/modules/nfproxy/nftables.py
+++ b/backend/modules/nfproxy/nftables.py
@@ -34,7 +34,7 @@ class FiregexTables(NFTableManager):
                 "name":self.input_chain,
                 "type":"filter",
                 "hook":"prerouting",
-                "prio":-301, 
+                "prio":-310,
                 "policy":"accept"
             }}},
             {"add":{"chain":{ #Output chain attached after conntrack saw it
@@ -43,7 +43,7 @@ class FiregexTables(NFTableManager):
                 "name":self.output_chain,
                 "type":"filter",
                 "hook":"postrouting",
-                "prio":-290,
+                "prio":-310,
                 "policy":"accept"
             }}}
         ],[
diff --git a/fgex-lib/firegex/nfproxy/internals/data.py b/fgex-lib/firegex/nfproxy/internals/data.py
index c9940ed..ce5062c 100644
--- a/fgex-lib/firegex/nfproxy/internals/data.py
+++ b/fgex-lib/firegex/nfproxy/internals/data.py
@@ -56,8 +56,7 @@ class RawPacket:
             raise Exception("Invalid data type, data MUST be of type bytes")
         #if len(v) != self.__l4_size:
         #    raise Exception("Invalid data size, must be equal to the original packet header size (due to a technical limitation)")
-        self.__raw_packet = self.__raw_packet[:self.raw_packet_header_len]+v
-        self.__l4_size = len(v)
+        self.raw_packet = self.__raw_packet[:self.raw_packet_header_len]+v
     
     @property
     def raw_packet(self) -> bytes:
@@ -67,6 +66,8 @@ class RawPacket:
     def raw_packet(self, v:bytes):
         if not isinstance(v, bytes):
             raise Exception("Invalid data type, data MUST be of type bytes")
+        if len(v) > 2**16:
+            raise Exception("Invalid data size, must be less than 2^16 bytes")
         #if len(v) != len(self.__raw_packet):
         #    raise Exception("Invalid data size, must be equal to the original packet size (due to a technical limitation)")
         if len(v) < self.raw_packet_header_len: