kenel

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

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

2.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.

实协同网络税务办公统，给使用JAVA语言工作流实，包括工作流核心接口类、主要类实以及工作流引擎实，并在工作流基础上，实统公文流转、审批流程设置等主要办公业务。