simpleNids是一款基于libnids编写的简易网络流量检测系统。 可以有效检测网络数据包，包括: ip packets ip fragment packets udp packets tcp packets http packets

既可以从指定网卡device也可以指定pcap读取数据包进行分析，解析结果为json。可以配置kafka将分析结果写入topic。

依赖lib: install libjson & libnids & librdkafka

Then compile: $ make Run: $ ./simpleNids -h

解析结果：

IP包： { "src": "x.x.x.x", "dst": "x.x.x.x", "total_length": 566, "protocol": 17, "packet_type": "ip", "time": 1460270272 }

IP碎片包： { "src": "x.x.x.x6", "dst": "x.x.x.x1", "total_length": 2632, "protocol": 17, "packet_type": "ip_frag", "time": 1460270253 }

UDP包： { "src": "x.x.x.x:5763", "dst": "x.x.x.x:8080", "total_length": 1616, "data": "M-SEARCH * HTTP/1.1\r\nMX: 50\r\nST: upnp:device\r\nMAN: "ssdp:discover"\r\nUser-Agent: curl /1.0.3.0\r\nConnection: close\r\nHost: x.x.x.x:8080\r\n\r\n", "packet_type": "udp", "time": 1460270562 }

HTTP包： { "src": "x.x.x.x:590", "dst": "x.x.x.x:80", "request_method": "GET", "request_url": "test/annual.html?column=&subject=&nrnd=254515268&rnd=58420", "request_host": "trace.com", "request_connection": "keep-alive", "request_accept": "image/webp,image/,/*;q=0.8", "request_user-agent": "Chrome/49.0.2623.110 Safari/537.36", "request_referer": "http://google.com", "request_accept-encoding": "gzip, deflate, sdch", "request_accept-language": "zh-CN,zh;q=0.8", "request_cookie": "RK=werxuimctwki; cgv=73465965873; login=3983202; ptcz=3432432432432432; guin=sa200111; pgv=12312;", "response_code": 200, "response_server": "nginx/1.12.0", "response_date": "Fri, 01 Apr 2015 00:00:00 GMT", "response_content-type": "image/gif", "response_content-length": "2", "response_connection": "keep-alive", "response_body": "01", "packet_type": "http", "time": 14602703475 }

TCP包： todo