Python网络工具：局域网端口扫描器

🚀 实例简介

基于 socket 实现 TCP 端口扫描，快速发现局域网内开放的服务端口。

💻 核心代码

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""Python网络工具：局域网端口扫描器（Tkinter GUI版）
功能：扫描指定IP地址的常用端口，显示开放端口和对应服务
"""
import tkinter as tk
from tkinter import ttk, messagebox
import socket
import threading
import platform

CHINESE_FONT = "WenQuanYi Zen Hei" if platform.system() == "Linux" else "Microsoft YaHei"

class PortScannerApp(tk.Tk):
    """局域网端口扫描器"""
    def __init__(self):
        super().__init__()
        self.title("Python局域网端口扫描器")
        self.geometry("750x500")
        self.configure(bg="#ecf0f1")
        self.scanning = False

        # 标题
        title_frame = tk.Frame(self, bg="#34495e", height=60)
        title_frame.pack(fill=tk.X)
        title_frame.pack_propagate(False)
        tk.Label(title_frame, text="🔍 局域网端口扫描器",
                 font=(CHINESE_FONT, 18, "bold"), fg="white", bg="#34495e").pack(pady=15)

        # 控制面板
        ctrl = tk.LabelFrame(self, text="扫描配置", font=(CHINESE_FONT, 11),
                             bg="#bdc3c7", padx=15, pady=10)
        ctrl.pack(fill=tk.X, padx=20, pady=(15, 5))

        # IP输入
        tk.Label(ctrl, text="目标IP:", font=(CHINESE_FONT, 11), bg="#bdc3c7").grid(row=0, column=0, sticky=tk.W, pady=3)
        self.ip_entry = tk.Entry(ctrl, width=30, font=(CHINESE_FONT, 11))
        self.ip_entry.insert(0, "127.0.0.1")
        self.ip_entry.grid(row=0, column=1, padx=10, pady=3)

        # 端口范围
        tk.Label(ctrl, text="端口范围:", font=(CHINESE_FONT, 11), bg="#bdc3c7").grid(row=1, column=0, sticky=tk.W, pady=3)
        port_frame = tk.Frame(ctrl, bg="#bdc3c7")
        port_frame.grid(row=1, column=1, sticky=tk.W, padx=10, pady=3)
        self.start_port = tk.Entry(port_frame, width=10, font=(CHINESE_FONT, 11))
        self.start_port.insert(0, "20")
        self.start_port.pack(side=tk.LEFT, padx=2)
        tk.Label(port_frame, text="-", font=(CHINESE_FONT, 11), bg="#bdc3c7").pack(side=tk.LEFT)
        self.end_port = tk.Entry(port_frame, width=10, font=(CHINESE_FONT, 11))
        self.end_port.insert(0, "1024")
        self.end_port.pack(side=tk.LEFT, padx=2)

        # 按钮
        btn_frame = tk.Frame(self, bg="#ecf0f1")
        btn_frame.pack(fill=tk.X, padx=20, pady=10)
        self.scan_btn = tk.Button(btn_frame, text="🚀 开始扫描", command=self.start_scan,
                                  font=(CHINESE_FONT, 12, "bold"), bg="#27ae60", fg="white",
                                  relief=tk.FLAT, padx=20, pady=8)
        self.scan_btn.pack(side=tk.LEFT, padx=5)
        self.status = tk.Label(btn_frame, text="就绪", font=(CHINESE_FONT, 10),
                              bg="#ecf0f1", fg="#7f8c8d")
        self.status.pack(side=tk.RIGHT, padx=10)

        # 结果显示
        result_frame = tk.LabelFrame(self, text="扫描结果", font=(CHINESE_FONT, 11),
                                     bg="white", padx=10, pady=10)
        result_frame.pack(fill=tk.BOTH, expand=True, padx=20, pady=(0, 15))

        # Treeview显示结果
        columns = ("port", "status", "service")
        self.tree = ttk.Treeview(result_frame, columns=columns, show="headings", height=10)
        self.tree.heading("port", text="端口")
        self.tree.heading("status", text="状态")
        self.tree.heading("service", text="服务")
        self.tree.column("port", width=100)
        self.tree.column("status", width=150)
        self.tree.column("service", width=300)
        self.tree.pack(fill=tk.BOTH, expand=True)

        # 常用端口服务映射

💡 适用场景

• 网络安全检测
• 局域网服务发现
• 端口开放状态监控