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diff --git a/libnetutil/UDPHeader.h b/libnetutil/UDPHeader.h
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+/***************************************************************************
+ * UDPHeader.h -- The UDPHeader Class represents a UDP packet. It contains *
+ * methods to set the different header fields. These methods tipically     *
+ * perform the necessary error checks and byte order conversions.          *
+ *                                                                         *
+ ***********************IMPORTANT NMAP LICENSE TERMS************************
+ *
+ * The Nmap Security Scanner is (C) 1996-2023 Nmap Software LLC ("The Nmap
+ * Project"). Nmap is also a registered trademark of the Nmap Project.
+ *
+ * This program is distributed under the terms of the Nmap Public Source
+ * License (NPSL). The exact license text applying to a particular Nmap
+ * release or source code control revision is contained in the LICENSE
+ * file distributed with that version of Nmap or source code control
+ * revision. More Nmap copyright/legal information is available from
+ * https://nmap.org/book/man-legal.html, and further information on the
+ * NPSL license itself can be found at https://nmap.org/npsl/ . This
+ * header summarizes some key points from the Nmap license, but is no
+ * substitute for the actual license text.
+ *
+ * Nmap is generally free for end users to download and use themselves,
+ * including commercial use. It is available from https://nmap.org.
+ *
+ * The Nmap license generally prohibits companies from using and
+ * redistributing Nmap in commercial products, but we sell a special Nmap
+ * OEM Edition with a more permissive license and special features for
+ * this purpose. See https://nmap.org/oem/
+ *
+ * If you have received a written Nmap license agreement or contract
+ * stating terms other than these (such as an Nmap OEM license), you may
+ * choose to use and redistribute Nmap under those terms instead.
+ *
+ * The official Nmap Windows builds include the Npcap software
+ * (https://npcap.com) for packet capture and transmission. It is under
+ * separate license terms which forbid redistribution without special
+ * permission. So the official Nmap Windows builds may not be redistributed
+ * without special permission (such as an Nmap OEM license).
+ *
+ * Source is provided to this software because we believe users have a
+ * right to know exactly what a program is going to do before they run it.
+ * This also allows you to audit the software for security holes.
+ *
+ * Source code also allows you to port Nmap to new platforms, fix bugs, and add
+ * new features. You are highly encouraged to submit your changes as a Github PR
+ * or by email to the dev@nmap.org mailing list for possible incorporation into
+ * the main distribution. Unless you specify otherwise, it is understood that
+ * you are offering us very broad rights to use your submissions as described in
+ * the Nmap Public Source License Contributor Agreement. This is important
+ * because we fund the project by selling licenses with various terms, and also
+ * because the inability to relicense code has caused devastating problems for
+ * other Free Software projects (such as KDE and NASM).
+ *
+ * The free version of Nmap is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Warranties,
+ * indemnification and commercial support are all available through the
+ * Npcap OEM program--see https://nmap.org/oem/
+ *
+ ***************************************************************************/
+/* This code was originally part of the Nping tool.                        */
+
+#ifndef UDPHEADER_H
+#define UDPHEADER_H 1
+
+#include "TransportLayerElement.h"
+
+#define UDP_HEADER_LEN 8
+
+/* Default header values */
+#define UDP_DEFAULT_SPORT 53
+#define UDP_DEFAULT_DPORT 53
+
+class UDPHeader : public TransportLayerElement {
+
+    private:
+        /*
+        0                   1                   2                   3
+        0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+        +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+        |          Source Port          |       Destination Port        |
+        +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+        |            Length             |           Checksum            |
+        +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+        */
+        struct nping_udp_hdr{
+          u16 uh_sport;
+          u16 uh_dport;
+          u16 uh_ulen;
+          u16 uh_sum;
+        }__attribute__((__packed__));
+
+        typedef struct nping_udp_hdr nping_udp_hdr_t;
+
+        nping_udp_hdr_t h;
+
+    public:
+
+        UDPHeader();
+        ~UDPHeader();
+        void reset();
+        u8 *getBufferPointer();
+        int storeRecvData(const u8 *buf, size_t len);
+        int protocol_id() const;
+        int validate();
+        int print(FILE *output, int detail) const;
+
+        int setSourcePort(u16 p);
+        u16 getSourcePort() const;
+
+        int setDestinationPort(u16 p);
+        u16 getDestinationPort() const;
+
+        int setTotalLength();
+        int setTotalLength(u16 l);
+        u16 getTotalLength() const;
+
+        int setSum(struct in_addr source, struct in_addr destination);
+        int setSum(u16 s);
+        int setSum();
+        int setSumRandom();
+        int setSumRandom(struct in_addr source, struct in_addr destination);
+        u16 getSum() const;
+
+}; /* End of class UDPHeader */
+
+
+#endif