The function is just like the utility traceroute in linux or tracert in windows.

功能是一样的效跟踪路由在Linux或tracert在Windows 。

Linux system kenel adopts the Netfilter mechanism ,which is a structural bottom frame for expanding various network service after 2.4 version.

Linux的系统内核自2.4.版本之后采了Netfilter机制，它是在内核中扩展各种网络服务的结构化底层框架。