Because the tool is often shared via security forums and GitHub releases, here is the recommended safe installation process:
Solution: Ensure your router has port forwarding. v13exe now includes a UPnP Port Mapper under the Network tab – click "Forward Automatically."
We're excited to announce the latest update to Netcat GUI v13.exe, bringing a more intuitive interface and enhanced performance to the classic netcat utility. netcat gui v13exe updated
Power users will appreciate the new macro recorder. You can save a sequence of commands (e.g., GET / HTTP/1.1 + two newlines) and replay them with a single click. This is perfect for rapid API endpoint testing.
This example provides a very basic interface to get started. For a fully-featured application, consider enhancing it with error handling, better UI design, and possibly threading for simultaneous send/receive operations. Because the tool is often shared via security
import tkinter as tk
from tkinter import scrolledtext
import subprocess
import platform
import threading
class NetcatGUI:
def __init__(self, root):
self.root = root
self.root.title("Netcat GUI")
self.root.geometry("600x400")
self.connection_type_var = tk.StringVar()
self.connection_type_var.set("TCP")
# Connection Type
tk.Radiobutton(root, text="TCP", variable=self.connection_type_var, value="TCP").pack()
tk.Radiobutton(root, text="UDP", variable=self.connection_type_var, value="UDP").pack()
# Host/IP
tk.Label(root, text="Host/IP").pack()
self.host_ip_entry = tk.Entry(root)
self.host_ip_entry.pack()
# Port
tk.Label(root, text="Port").pack()
self.port_entry = tk.Entry(root)
self.port_entry.pack()
# Listen/Connect
tk.Button(root, text="Listen", command=self.listen).pack()
tk.Button(root, text="Connect", command=self.connect).pack()
# Send/Receive
self.text_area = scrolledtext.ScrolledText(root)
self.text_area.pack(fill="both", expand=True)
self.send_entry = tk.Entry(root)
self.send_entry.pack()
tk.Button(root, text="Send", command=self.send).pack()
# Exit
tk.Button(root, text="Exit", command=root.quit).pack()
self.netcat_process = None
def listen(self):
try:
self.text_area.insert(tk.END, "Listening...\n")
command = f"netcat -l -p self.port_entry.get() -t self.connection_type_var.get().lower()"
if platform.system() == 'Windows':
self.netcat_process = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
else:
self.netcat_process = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, preexec_fn=os.setsid)
threading.Thread(target=self.read_output).start()
except Exception as e:
self.text_area.insert(tk.END, f"Error: e\n")
def connect(self):
try:
self.text_area.insert(tk.END, "Connecting...\n")
command = f"netcat self.host_ip_entry.get() self.port_entry.get() -t self.connection_type_var.get().lower()"
if platform.system() == 'Windows':
self.netcat_process = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
else:
self.netcat_process = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, preexec_fn=os.setsid)
threading.Thread(target=self.read_output).start()
except Exception as e:
self.text_area.insert(tk.END, f"Error: e\n")
def send(self):
try:
if self.netcat_process:
command = self.send_entry.get()
self.send_entry.delete(0, tk.END)
self.text_area.insert(tk.END, f"Sent: command\n")
# Implement actual sending logic here
else:
self.text_area.insert(tk.END, "Not connected.\n")
except Exception as e:
self.text_area.insert(tk.END, f"Error: e\n")
def read_output(self):
while True:
try:
output, error = self.netcat_process.stdout.readline().decode('utf-8'), self.netcat_process.stderr.readline().decode('utf-8')
if output:
self.text_area.insert(tk.END, output)
if error:
self.text_area.insert(tk.END, error)
except Exception as e:
self.text_area.insert(tk.END, f"Error: e\n")
break
if __name__ == "__main__":
root = tk.Tk()
app = NetcatGUI(root)
root.mainloop()
Solution: In v13exe, go to Tools → View Open Ports – the new integrated netstat -ano visualizer lets you kill the offending process directly.
Absolutely – if you fall into any of these categories: We're excited to announce the latest update to
Proceed with caution if: You are in a highly regulated environment (banking, healthcare) without explicit approval for such tools.
One of the most requested features in previous versions was native hex inspection. The updated v13exe includes a side panel that renders incoming data as both ASCII and hexadecimal, making binary protocol debugging (e.g., game servers, IoT devices) trivial.