公开(公告)号：US20080298354A1

公开(公告)日：2008-12-04

申请号：US11755901

申请日：2007-05-31

申请人： David John Alves ,  Justin Scott Hart ,  Gautham Nimmagadda

发明人： David John Alves ,  Justin Scott Hart ,  Gautham Nimmagadda

IPC分类号： H04L12/56

CPC分类号： H04L69/22 ,  H04L65/1006 ,  H04L65/1079

摘要： Described are computer-based methods and apparatuses, including computer program products, for packet signaling content control on a network. The content control includes two sets of filters—an ingress filter set and an egress filter set. For packets coming into an internal network, the packets (e.g., SIP packets) are filtered by an ingress filter associated with the external network and which determines whether to discard sets of information from the packet description information (e.g., a header, an optional header). The packet is also filtered by an egress filter associated with the internal network and which determines whether to discard sets of information from the packet description information. The packet is transmitted to the internal network. For packets leaving the internal network, the filtering occurs in the opposite direction (e.g., egress filter associated with the internal network and then ingress filter associated with the external network).

摘要翻译： 描述了基于计算机的方法和设备，包括用于网络上的分组信令内容控制的计算机程序产品。 内容控制包括两组滤波器 - 入口滤波器组和出口滤波器组。 对于进入内部网络的分组，分组（例如，SIP分组）被与外部网络相关联的入口过滤器过滤，并且确定是否从分组描述信息丢弃信息集（例如，报头，可选报头 ）。 分组也被与内部网络相关联的出口过滤器过滤，并且确定是否从分组描述信息丢弃信息集合。 数据包被传输到内部网络。 对于离开内部网络的分组，过滤发生在相反的方向（例如，与内部网络相关联的出口过滤器，然后与外部网络相关联的入口过滤器）。