add: port_scan.py

.gitignore

@@ -198,3 +198,7 @@ vendor
 hs_err_pid*
 replay_pid*
 
+.*/*.iml
+.idea/
+python/.idea
+shell/.idea

README.md

@@ -5,6 +5,7 @@
 ## python
 
 * [ipv4_aliyun.py](python%2Fipv4_aliyun.py) 解析动态ipv4到DNS中
+* [port_scan.py](python%2Fport_scan.py) 端口扫描
 
 ## shell
 

python/ipv4_aliyun.py

@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 """
     @Time    : 2023/08/23
-    @Author  : LXW
+    @Author  : Carol
     @Site    :
     @File    : ipv4.py
     @Software: PyCharm

python/port_scan.py

@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+    @Time    : 2023/08/30
+    @Author  : Carol
+    @Site    :
+    @File    : ipv4.py
+    @Software: PyCharm
+    @Description: 扫描全部端口并返回对外暴露的端口号集合
+        - 1- 1024 固定类别端口
+        - 1025- 65535 自定义端口
+"""
+import socket
+
+
+def __port_checker(ip_address_or_domain, port_number):
+    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    try:
+        sock.connect((str(ip_address_or_domain), int(port_number)))
+        print("PORT {0} is OPEN on '{1}'.".format(port_number, ip_address_or_domain))
+        return port_number
+    except Exception as e:
+        print("PORT {0} is CLOSED on '{1}', exception: {2}.".format(port_number, ip_address_or_domain, str(e)))
+        return None
+    finally:
+        sock.close()
+
+
+if __name__ == '__main__':
+    domain = "redirect.cnkj.site"
+    ports = []
+    for i in range(1, 65535):
+        port = __port_checker(domain, i)
+        if None is not port:
+            ports.append(port)
+    print("当前 {0} 域名对外开放的端口合集: \n".format(domain))
+    for p in ports:
+        print(p)