After doing a quick search, i did not find anything - but I'll keep looking.
My gut is telling me to keep denying it - possible a "worm" type program that sends out request to random IP addresses (yours) to see if it can get through to something or not.
(esconder) Se está interessado no progresso de um torneio em que participa, pode discuti-lo com os seus adversários no fórum desse torneio. (HelenaTanein) (mostrar todas as dicas)