python获取路由器IP

之前测试某个路由器漏洞时，写了一小段python脚本查找路由器IP。

实际上可以认为是端口扫描，程序只是粗略地检查是否开放了80端口。

import socket
import threading

routers = []
lock = threading.Lock()

def search_routers(): 
    routers = []
    local_ips = socket.gethostbyname_ex(socket.gethostname())[2]    # get local IP
    all_threads = []
    for ip in local_ips:
        for i in range(1, 255):
            array = ip.split('.')
            array[3] = str(i)
            new_ip = '.'.join(array)
            t = threading.Thread(target=check_ip, args=(new_ip,) )
            t.start()
            all_threads.append(t)
    for t in all_threads:
        t.join()

def check_ip(new_ip):
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.settimeout(1)
    result = s.connect_ex((new_ip, 80))
    s.close()
    if result == 0:
        lock.acquire()
        print new_ip.ljust(15), ' port 80 is open'
        routers.append((new_ip, 80))
        lock.release()

print 'Searching for routers, please wait...'
search_routers()

timeout可以设置成1秒或2秒。local_ips是获取多块网卡上绑定的IP，比如我的IP地址是192.168.1.4和192.168.56.1。而代码所做的事情就是扫描 [192.168.1.1 ~ 192.168.1.254]  [192.168.56.1 ~ 192.168.56.254] 有哪些IP开放80端口。

在我的PC上运行结果:

其中192.168.1.1和192.168.1.253是我的无线modem和无线路由器。