From 8934c3b5c88f2a2bc46dc22297ab22d8a3fc9c50 Mon Sep 17 00:00:00 2001
From: Yannik Schmidt <yannik.schmidt@potaris.de>
Date: Sun, 24 Mar 2024 17:27:43 +0100
Subject: [PATCH] wip: poc for local net scan

---
 localnetscan.py | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 localnetscan.py

diff --git a/localnetscan.py b/localnetscan.py
new file mode 100644
index 0000000..b9b8a83
--- /dev/null
+++ b/localnetscan.py
@@ -0,0 +1,48 @@
+import multiprocessing
+import ipaddress
+import socket
+
+def generate_ips_in_subnet():
+    '''Get curren relevant subnets'''
+
+    subnet = "192.168.1.0/24"
+    network = ipaddress.ip_network(subnet)
+    return [str(ip) for ip in network.hosts()]
+
+def check_port(ip_addrees):
+    '''Look for FTP Servers on the local-net'''
+    
+    port = 2121
+    print("Checking", ip_addrees)
+    try:
+        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        s.settimeout(1)
+        s.connect((ip_addrees, port))
+        return ip_addrees
+    except (socket.timeout, ConnectionRefusedError):
+        return None
+    finally:
+        s.close()
+
+def parallel_execution():
+    '''Run parallel checks for all addresses'''
+
+    ip_address_list = generate_ips_in_subnet()
+
+    pool = multiprocessing.Pool(processes=50)
+    results = pool.starmap(check_port, [(ip,) for ip in ip_address_list])
+
+    # Close the pool
+    pool.close()
+    pool.join()
+
+    return results
+
+if __name__ == "__main__":
+
+
+    # Execute lambda functions in parallel
+    results = parallel_execution()
+
+    # Print results
+    print(list(filter(None, results)))
\ No newline at end of file