Hello All I have recently installed Zone Alarm as my firewall. It is very efficient at letting me know that it has blocked access to my computer. A typical message is as follows. The firewall has blocked Internet Access to your computer (TCP Port 445) from 213.78.60.143 (TCP Port 4097)(TCP Flags:S) 1st of 9 alerts. It would appear that there is a need, apart from a mischevious one, for the access. Where can I find out what program, if any, does the Source IP address relate to? What does TCP Flags: S mean? Regards Charles _________________________________________________________________ Express yourself with cool new emoticons http://www.msn.co.uk/specials/myemo