1.isConnect 嗅探局域网内已联通ip sniffing active ips in local area networks 用法(usage)： 1.pip install IPy 2.python isConnect.py 192.168.66.0/24 2.isDNSServer 嗅探文件内ip是否是DNS服务器 Sniffing ip is a DNS server 用法(usage)： 1.pip install dnspython 2.添加ip到DNS.txt中（add the ip in DNS.txt） 3.python isDNSServer.py