hi. Protocol rules determines the protocols that are available for both inbound and outbound access. so if any rules avaible in protocol rules so it means it is using it may be different protocols at different times ... so check the protocol rules one by one by checking it in the properties menu of rules added in protocol rules.. and also the protocols section and shedule section and action taken by the rules. You will get ur answer by ur self.. Thanks for visiting isaserver.org khalid pervaiz