通过件包头信息和管理员设定的规则表比较，读出并拒绝那些不符合标准的包，过滤掉不应入站的信息。...

代码说明：

通过件包头信息和管理员设定的规则表比较，读出并拒绝那些不符合标准的包，过滤掉不应入站的信息。 -Through the pieces of header information and administrators set the rules of table comparison, and refused to read out those who do not meet the standard package, should not filter out the information into the station.