Как принимать по UPD пакеты с определенного порта? Желательно в HEX

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
 
namespace Project {
    class Program {
        static void Main() {
 
            Socket udplistener = new Socket(SocketType.Dgram, ProtocolType.Udp);
            udplistener.Bind(new IPEndPoint(IPAddress.Any, 40));
 
            EndPoint remEp = new IPEndPoint(IPAddress.None, 0);
            byte[] buffer = new byte[udplistener.ReceiveBufferSize];
            byte[] dataReceive = new byte[] { };
 
            while (udplistener.IsBound) {
                dataReceive = new byte[udplistener.ReceiveFrom(buffer, ref remEp)];
                buffer.CopyTo(dataReceive, 0);
            }
 
        }
    }
}

dataReceive = buffer.Take(udplistener.ReceiveFrom(buffer, ref remEp)).ToArray();

dataReceive = buffer.Take(udplistener.ReceiveFrom(buffer, ref remEp)).ToArray();

Socket udplistener = new Socket(SocketType.Dgram, ProtocolType.Udp);
            udplistener.Bind(new IPEndPoint(IPAddress.Any, 1177));
 
            EndPoint remEp = new IPEndPoint(IPAddress.None, 1199);
            byte[] buffer = new byte[udplistener.ReceiveBufferSize];
            byte[] dataReceive = new byte[] { };
 
            while (udplistener.IsBound)
            {
                dataReceive = buffer.Take(udplistener.ReceiveFrom(buffer, ref remEp)).ToArray();
                Console.WriteLine(dataReceive.Length.ToString());
            }

udplistener.Bind(new IPEndPoint(IPAddress.Any, порт));

EndPoint remEp = new IPEndPoint(IPAddress.None, 0);