Hi, i am in standalone environment, using ISA 2000, some clients in my internal network send their Ping Requests contineously to my ISA server for checking that either the ISA Machine is ON or OFF, i wana block those ping requests comming from the internal network, i used that article found at isaserver.org "How to create a packet filter for dropping ICMP Packets (Ping Requests)" and restarted all three services of ISA but still can't get the rid of PING requests.....Please guide me.