I keep getting this error in my application log Event ID:15105 Source :Microsoft ISA Server Control Category:Packet Filter ISA Server detected an all port scan attack from Internet Protocol (IP) address ???.???.???.???. For more information about this event, see ISA Server Help. The reason for the IP address being questioned marked is because the IP address is my own external IP address ???? I have a number of addresses bound to the external side of the card, could it be something to do with this ? Paul Crisp Snr Network Support Analyst