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源：http://blog.youkuaiyun.com/aspirationflow/article/details/7694274评：Nmap扫描原理与用法2012年6月16日 1 Nmap介绍Nmap扫描原理与用法PDF：下载地址Nmap是一款开源免费的网络发现（Network Discovery）和安全审计（Security Auditing）工...

源：http://blog.youkuaiyun.com/AspirationFlow/article/details/7797708#comments评：

/** * 获取IP公共方法 * @param req * @return */ public static String getIP(HttpServletRequest req) { String ipStr = req.getHeader(" x-forwarded-for "); if (ipStr == null || ipS...

源：http://my.oschina.net/shineyyl/blog/125540评：$ netstat -antActive Internet connections (servers and established)Proto Recv-Q Send-Q Local Address Foreign Address ...

源：http://tutorials.jenkov.com/java-networking/protocol-design.html评：Table of Contents Client - Server Roundtrips Demarcating the End of Requests and Responses Penetrating Firewa...