Python批量扫描服务器指定端口状态

闲来无事用Python写了一个简陋的端口扫描脚本，其简单的逻辑如下：

1. python DetectHostPort.py iplist.txt(存放着需要扫描的IP地址列表的文本，每行一个地址)

2. 输入指定的扫描端口，扫描后完成后将生成日志文件。

源码如下：

#!/usr/bin/env python
import sys

import time

import socket
def getaddresslist(addr):

    """

    getaddresslist(addr) -> IP address file
IP address read from the file.

    """

    try:

        with open(addr, "r") as ip_list:

            lines = ip_list.readlines()

            address = [line.strip() for line in lines]

        return address

    except (IOError, IndexError), e:

        return str(e)
def scan(ip_list, port):

    """

    scan() -> getaddresslist()
getaddresslist() function returns the IP address of the list.

    """

    if not isinstance(ip_list, list):

        sys.exit("Function getaddresslist() return error message: %s" % ip_list)
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    s.settimeout(1)

    f = open('E:\programming\public\python\scan.log', 'ab')

    for addr in ip_list:

        host = (addr, int(port))

        try:

            s.connect(host)

            f.write("Host %s:%s connection success. \n" % (host[0], host[1]))

        except Exception, e:

            f.write("Host %s:%s connection failure: %s. \n" % (host[0], host[1], e))

    f.close()

    s.close()

    return True
if __name__ == '__main__':
addrs = sys.argv[1]

    isNone = True

    while isNone:

        scanport = raw_input("Enter the scan port: ")

        if scanport:

            isNone = False

        else:

            continue

    scan(getaddresslist(addrs), scanport)

运行时只能扫描一个端口，但是可以对代码进行修改，扩展为扫描多个端口。