diff --git a/examples/networking/http_filter/http-parse-complete.c b/examples/networking/http_filter/http-parse-complete.c
index 61bb0f0..dff16b9 100644
--- a/examples/networking/http_filter/http-parse-complete.c
+++ b/examples/networking/http_filter/http-parse-complete.c
@@ -56,6 +56,19 @@
 	struct Key 	key;
 	struct Leaf zero = {0};
 
+        //calculate ip header length
+        //value to multiply * 4
+        //e.g. ip->hlen = 5 ; IP Header Length = 5 x 4 byte = 20 byte
+        ip_header_length = ip->hlen << 2;    //SHL 2 -> *4 multiply
+
+        //check ip header length against minimum
+        if (ip_header_length < sizeof(*ip)) {
+                goto DROP;
+        }
+
+        //shift cursor forward for dynamic ip header size
+        void *_ = cursor_advance(cursor, (ip_header_length-sizeof(*ip)));
+
 	struct tcp_t *tcp = cursor_advance(cursor, sizeof(*tcp));
 
 	//retrieve ip src/dest and port src/dest of current packet
@@ -65,11 +78,6 @@
 	key.dst_port = tcp->dst_port;
 	key.src_port = tcp->src_port;
 
-	//calculate ip header length
-	//value to multiply * 4
-	//e.g. ip->hlen = 5 ; IP Header Length = 5 x 4 byte = 20 byte
-	ip_header_length = ip->hlen << 2;    //SHL 2 -> *4 multiply
-
 	//calculate tcp header length
 	//value to multiply *4
 	//e.g. tcp->offset = 5 ; TCP Header Length = 5 x 4 byte = 20 byte
diff --git a/examples/networking/http_filter/http-parse-simple.c b/examples/networking/http_filter/http-parse-simple.c
index d9229b4..b4e49cc 100644
--- a/examples/networking/http_filter/http-parse-simple.c
+++ b/examples/networking/http_filter/http-parse-simple.c
@@ -34,13 +34,21 @@
 	u32  payload_offset = 0;
 	u32  payload_length = 0;
 
-	struct tcp_t *tcp = cursor_advance(cursor, sizeof(*tcp));
-
 	//calculate ip header length
 	//value to multiply * 4
 	//e.g. ip->hlen = 5 ; IP Header Length = 5 x 4 byte = 20 byte
 	ip_header_length = ip->hlen << 2;    //SHL 2 -> *4 multiply
 
+        //check ip header length against minimum
+	if (ip_header_length < sizeof(*ip)) {
+		goto DROP;
+	}
+
+        //shift cursor forward for dynamic ip header size
+        void *_ = cursor_advance(cursor, (ip_header_length-sizeof(*ip)));
+
+	struct tcp_t *tcp = cursor_advance(cursor, sizeof(*tcp));
+
 	//calculate tcp header length
 	//value to multiply *4
 	//e.g. tcp->offset = 5 ; TCP Header Length = 5 x 4 byte = 20 byte