IP communication device as firewall between network and computer system

摘要

Methods, systems, and apparatuses are described for implementations of an Internet protocol (IP) communication device (e.g., an IP phone) that contains a firewall. The IP communication device is coupled between a computer system and a network. A data packet is received at a first port of the IP communication device. The data packet is filtered with the firewall included in the IP communication device. The filtered data packet may be transmitted from a second port of the IP communication device (in modified or unmodified form), or may be canceled based on the filtering. In one implementation, the first port is coupled to the network and the second port is coupled to the computer system. In another implementation, the first port is coupled to the computer system and the second port is coupled to the network.

主权项

1. A method, comprising:
receiving a data packet at a first port of an Internet protocol (IP) communication device that is an IP phone; filtering the data packet with a firewall included in the IP communication device, said filtering including:
determining that the data packet has a framing issue; andselecting an action to perform on the data packet based on the determined framing issue, the action selected from a plurality of actions indicated in an action database that are associated with a plurality of framing issues; and transmitting the filtered data packet from a second port of the IP communication device.