Patent ID: 8085752
Filing Date: 2011-12-27
Classification: H04L

Abstract:
1. A method of handling mobile entities in a firewall, comprising maintaining a first mobile entity table comprising identifiers of mobile entities which are active in the firewall, maintaining a second mobile entity table comprising identifiers of mobile entities which are active in a predefined set of other firewalls and identifiers of corresponding other firewalls, detecting a new mobile entity, which is not currently active in the firewall, finding on the basis of the second mobile entity table, if the new mobile entity is currently active in another firewall, and if the mobile entity is currently active in another firewall, querying, from the another firewall, state information related to the new mobile entity, and storing the state information in the firewall to be used for processing data packets from/to the new mobile entity, and sending the first mobile entity table to a predefined set of other firewalls in response to an addition, deletion or modification of an entry in the mobile entity table.