用python扫描linux开放的端口（3种方式）

1、linux端口扫描基础版

# -*- coding: utf-8 -*-
import socket


def get_ip_by_name(domain):
    '''
    提供域名转ip的功能，利用socket.gethostbyname，返回str
    '''
    try:
        return socket.gethostbyname
    except Exception as e:
        print("%s:%s"%(domain, e))


def __port_scan(ip, port_list, timeout):
    '''
    端口扫描核心代码
    '''
    START_MSG = ""
    OPEN_MSG = "% 6d [OPEN]"
    result_list = list()

    for port in port_list:
        try:
            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
            s.settimeout(timeout)
            result_code = s.connect_ex((ip, port)) #开放放回0
            if result_code == 0:
                print(OPEN_MSG % port)
                result_list.append(port)
            else:
                continue
        except Exception as e:
            print(e)
        finally:
            s.close()
    return result_list


def all_port_scan(ip, start_port = 1, end_port = 65535, timeout=3):
    '''
    扫描所有的端口(1-65535)，返回一个包含所有开放的端口list，可以通过参数start_port和参数end_port自定义开始端口和结束端口
    '''
    port_list = range(start_port,end_port+1)
    result_list =  __port_scan(ip, port_list, timeout)
    return result_list

def value_port_scan(ip, top = 1000, timeout = 3):
    '''
    扫描top的端口，top的值可以选择50、100、1000(default)，返回一个包含所有开放的端口list，可以通过参数top设置top值
    '''
    top50_list = [21,22,25,53,80,110,113,135,139,143,179,199,443,445,465,514,548,554,587,646,993,995,1025,1026,1433,1720,1723,2000,3306,3389,5060,5666,5900,6001,8000,8008,8080,8443,8888,10000,32768,49152,49154]
    top100_list = [7,9,13,21,22,25,37,53,79,80,88,106,110,113,119,135,139,143,179,199,389,427,443,444,465,513,514,543,548,554,587,631,646,873,990,993,995,1025,1026,1027,1028,1110,1433,1720,1723,1755,1900,2000,2049,2121,2717,3000,3128,3306,3389,3986,4899,5000,5009,5051,5060,5101,5190,5357,5432,5631,5666,5800,5900,6000,6646,7070,8000,8008,8080,8443,8888,9100,9999,32768,49152,49153,49154,49155,49156]
    top1000_list = [1,3,6,9,13,17,19,20,21,22,23,24,25,30,32,37,42,49,53,70,79,80,81,82,83,84,88,89,99,106,109,110,113,119,125,135,139,143,146,161,163,179,199,211,222,254,255,259,264,280,301,306,311,340,366,389,406,416,425,427,443,444,458,464,481,497,500,512,513,514,524,541,543,544,548,554,563,587,593,616,625,631,636,646,648,666,667,683,687,691,700,705,711,714,720,722,726,749,765,777,783,787,800,808,843,873,880,888,898,900,901,902,911,981,987,990,992,995,999,1000,1001,1007,1009,1010,1021,1022,1023,1024,1025,1026,1027,1028,1029,1030,1031,1032,1033,1034,1035,1036,1037,1038,1039,1040,1041,1042,1043,1044,1045,1046,1047,1048,1049,1050,1051,1052,1053,1054,1055,1056,1057,1058,1059,1060,1061,1062,1063,1064,1065,1066,1067,1068,1069,1070,1071,1072,1073,1074,1075,1076,1077,1078,1079,1080,1081,1082,1083,1084,1085,1086,1087,1088,1089,1090,1091,1092,1093,1094,1095,1096,1097,1098,1099,1102,1104,1105,1106,1107,1110,1111,1112,1113,1117,1119,1121,1122,1123,1126,1130,1131,1137,1141,1145,1147,1148,1151,1154,1163,1164,1165,1169,1174,1183,1185,1186,1192,1198,1201,1213,1216,1217,1233,1236,1244,1247,1259,1271,1277,1287,1296,1300,1309,1310,1322,1328,1334,1352,1417,1433,1443,1455,1461,1494,1500,1503,1521,1524,1533,1556,1580,1583,1594,1600,1641,1658,1666,1687,1700,1717,1718,1719,1720,1723,1755,1761,1782,1801,1805,1812,1839,1862,1863,1875,1900,1914,1935,1947,1971,1974,1984,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2013,2020,2021,2030,2033,2034,2038,2040,2041,2042,2045,2046,2047,2048,2065,2068,2099,2103,2105,2106,2111,2119,2121,2126,2135,2144,2160,2170,2179,2190,2196,2200,2222,2251,2260,2288,2301,2323,2366,2381,2382,2393,2399,2401,2492,2500,2522,2525,2557,2601,2604,2607,2638,2701,2710,2717,2725,2800,2809,2811,2869,2875,2909,2920,2967,2998,3000,3003,3005,3006,3011,3013,3017,3030,3052,3071,3077,3128,3168,3211,3221,3260,3268,3283,3300,3306,3322,3323,3324,3333,3351,3367,3369,3370,3371,3389,3404,3476,3493,3517,3527,3546,3551,3580,3659,3689,3703,3737,3766,3784,3800,3809,3814,3826,3827,3851,3869,3871,3878,3880,3889,3905,3914,3918,3920,3945,3971,3986,3995,3998,4000,4001,4002,4003,4004,4005,4045,4111,4125,4129,4224,4242,4279,4321,4343,4443,4444,4445,4449,4550,4567,4662,4848,4899,4998,5000,5001,5002,5003,5009,5030,5033,5050,5054,5060,5080,5087,5100,5101,5120,5190,5200,5214,5221,5225,5269,5280,5298,5357,5405,5414,5431,5440,5500,5510,5544,5550,5555,5560,5566,5631,5633,5666,5678,5718,5730,5800,5801,5810,5815,5822,5825,5850,5859,5862,5877,5900,5901,5902,5903,5906,5910,5915,5922,5925,5950,5952,5959,5960,5961,5962,5987,5988,5998,5999,6000,6001,6002,6003,6004,6005,6006,6009,6025,6059,6100,6106,6112,6123,6129,6156,6346,6389,6502,6510,6543,6547,6565,6566,6580,6646,6666,6667,6668,6689,6692,6699,6779,6788,6792,6839,6881,6901,6969,7000,7001,7004,7007,7019,7025,7070,7100,7103,7106,7200,7402,7435,7443,7496,7512,7625,7627,7676,7741,7777,7800,7911,7920,7937,7999,8000,8001,8007,8008,8009,8010,8021,8031,8042,8045,8080,8081,8082,8083,8084,8085,8086,8087,8088,8089,8093,8099,8180,8192,8193,8200,8222,8254,8290,8291,8300,8333,8383,8400,8402,8443,8500,8600,8649,8651,8654,8701,8800,8873,8888,8899,8994,9000,9001,9002,9009,9010,9040,9050,9071,9080,9090,9099,9100,9101,9102,9110,9200,9207,9220,9290,9415,9418,9485,9500,9502,9535,9575,9593,9594,9618,9666,9876,9877,9898,9900,9917,9929,9943,9968,9998,9999,10000,10001,10002,10003,10009,10012,10024,10082,10180,10215,10243,10566,10616,10621,10626,10628,10778,11110,11967,12000,12174,12265,12345,13456,13722,13782,14000,14238,14441,15000,15002,15003,15660,15742,16000,16012,16016,16018,16080,16113,16992,17877,17988,18040,18101,18988,19101,19283,19315,19350,19780,19801,19842,20000,20005,20031,20221,20828,21571,22939,23502,24444,24800,25734,26214,27000,27352,27355,27715,28201,30000,30718,30951,31038,31337,32768,32769,32770,32771,32772,32773,32774,32775,32776,32777,32778,32779,32780,32781,32782,32783,32784,33354,33899,34571,34572,35500,38292,40193,40911,41511,42510,44176,44442,44501,45100,48080,49152,49153,49154,49155,49156,49157,49158,49159,49160,49163,49165,49167,49175,49400,49999,50000,50001,50002,50006,50300,50389,50500,50636,50800,51103,51493,52673,52822,52848,52869,54045,54328,55055,55555,55600,56737,57294,57797,58080,60020,60443,61532,61900,62078,63331,64623,64680,65000,65129,65389]

    if top == 50:
        port_list = top50_list
    elif top == 100:
        port_list = top100_list
    else:
        port_list = top1000_list

    result_list = __port_scan(ip, port_list, timeout)
    return result_list


if __name__ == '__main__':
    # all_port_scan("127.0.0.1")
    # value_port_scan("127.0.0.1")
    value_port_scan("123.56.67.213", top=100)

2、全端口扫描

# -*- coding: utf-8 -*-
import threading
from socket import *

lock = threading.Lock()  # 确保 多个线程在共享资源的时候不会出现脏数据
openNum = 0  # 端口开放数量统计
threads = []  # 线程池


def portscanner(host, port):
    global openNum
    try:
        s = socket(AF_INET, SOCK_STREAM)
        s.connect((host, port))
        lock.acquire()
        openNum += 1
        print(f"{port} open")
        lock.release()
        s.close()
    except:
        pass


def main(ip, ports=range(65535)):  # 设置 端口缺省值0-65535
    setdefaulttimeout(1)
    for port in ports:
        t = threading.Thread(target=portscanner, args=(ip, port))
        threads.append(t)
        t.start()
    for t in threads:
        t.join()
    print(f"PortScan is Finish ，OpenNum is {openNum}")


if __name__ == '__main__':
    ip = '123.56.67.212'
    # main(ip,[22,101,8080,8000])          # 输入端口扫描
    main(ip)  # 全端口扫描

3、多线程扫描

# -*- coding: utf-8 -*-
import telnetlib
import threading
import queue


# IP端口开发检测
def get_ip_status(ip):
    server = telnetlib.Telnet()
    for port in range(20, 10000):
        try:
            server.open(ip, port)
            print('{0} port {1} is open'.format(ip, port))
        except Exception as err:
            # print('{0} port {1} is not open'.format(ip,port))
            pass
        finally:
            server.close()


def check_open(q):
    try:
        while True:
            ip = q.get_nowait()
            get_ip_status(ip)
    except queue.Empty as e:
        pass


# 主函数
if __name__ == '__main__':
    host = ['123.56.67.213']  # 模拟多IP地址
    q = queue.Queue()
    for ip in host:
        q.put(ip)
    threads = []
    for i in range(10):
        t = threading.Thread(target=check_open, args=(q,))
        t.start()
        threads.append(t)

    for t in threads:
        t.join()