Ehlert, S.S.EhlertZhang, G.G.ZhangMagedanz, T.T.Magedanz2022-03-102022-03-102008https://publica.fraunhofer.de/handle/publica/36029910.1109/PIMRC.2008.4699868en004Increasing SIP firewall performance by ruleset size limitationconference paper