Dual use counters for routing loops and spam detection

Details Dual use counters for routing loops and spam detection Dual use counters for routing loops and spam detection

H - Electricity

04

L

H04L 12/26 (2006.01) H04L 9/00 (2006.01) H04L 12/54 (2006.01)

Patent

CA 2557461

A method for detecting an undesirable condition within a messaging network. A message is received and a source of the message is identified. If an entry in a database for the source has not been created, an entry is created. A source counter for the source is then set to one and a timestamp is created for the source. If an entry in the database for the source has been previously created, the source counter is incremented by one and the timestamp is updated. The source counter is then compared to a source threshold, and if the source counter exceeds the source threshold over the course of predetermined amount of time, a source alarm is triggered. A sliding with respect to the predetermined amount of time may also be implemented to account for total counts that may fall across or be split by set periods of time. The invention is particularly useful for detecting "spam" events and undesirable routing loops.

L'invention porte sur un procédé de détection des états indésirables dans un réseau de messageries. A la réception d'un message, on en identifie la source, on crée (si elle n'existe pas encore) une entrée pour ladite source dans une base de données, et on met sur un le compteur de sources. S'il existe déjà une entrée pour la source dans la base de données, on avance d'une unité le compteur de sources et on actualise l'horodateur, puis on le compare à un seuil de sources, et s'il dépasse ledit seuil pendant une période prédéterminée, une alarme se déclenche. Ladite période peut être allongée pour tenir compte de la totalité des coups tombant dans des périodes de temps fixées ou se répartissant dans de telles périodes. L'invention est particulièrement utile pour détecter les "pollupostages" et les acheminements en boucle indésirables.

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