The filtering action for the inbound RTP filter. The inbound RTP filters operate on network numbers contained in the topological entries in the RTP update, response, and redirect packets received over a specified interface. In deny mode, the 6611 ignores route information for a network if the network number and the port on which the route information was received matches any inbound RTP filter. In permit mode, the IBM 6611 processes route information for a network only if the network number and the port on which the route information was received matches any inbound RTP filter. The default for this object is 'deny'.