kenel

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.版后采用了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。

Workflow realization base on JAVA was given, including kenel interface, main classes and workflow engine.File flow, examine and approve flow function of the system were realized based on the workflow.

实现了协同网络税务办公系统，给了使用JAVA语言的的实现，包括的核心接口类、主要类的实现以及引擎的实现，并在该基础上，实现了该系统的公文转、审批程设置等主要办公业务。