Tom Verdickt Wim Van de Meerssche Koert Vlaeminck Modeling the performance of a NAT/firewall network service for the IXP2400. 137-144 2005 conf/wosp/2005 WOSP http://doi.acm.org/10.1145/1071021.1071035 db/conf/wosp/wosp2005.html#VerdicktMV05