Patent ID: 8756339
Filing Date: 2014-06-17
Classification: H04L

Abstract:
1. A method comprising: receiving, at a network router that stores a lawful intercept routing table, an instruction to monitor data packets associated with a target entity for a purpose of lawful intercept; adding, by the network router, the target entity to a lawful intercept list; assigning, by the network router, a lawful intercept internet protocol (IP) address from a range of lawful intercept IP addresses to the target entity added to the lawful intercept list, the lawful intercept IP address having a corresponding routing policy for routing data packets associated with the lawful intercept IP address to a lawful intercept capture system; upon receiving a data packet, identifying, by the network router, an origination IP address associated with the data packet and a destination IP address associated with the data packet; determining, by the network router, if one of the origination IP address and the destination IP address is in the range of lawful intercept IP addresses, wherein determining if the one of the origination IP address and the destination IP address is in the range of lawful intercept IP addresses comprises performing a look-up operation by searching the lawful intercept list for the origination IP address and the destination IP address; if a determination is made that one of the the origination IP address and the destination IP address is in the range of lawful intercept IP addresses, redirecting, by the network router, the data packet to the lawful intercept capture system based on the corresponding routing policy; receiving, at the network router, a request to stop monitoring the data packets associated with the target entity for the purpose of lawful intercept; and removing, by the network router, the target entity from the lawful intercept list.