Hi, My friend told me that the firewall for XP is crap and got me to install Kerio firewall 2.1.5. I'm also using AVAST anti-virus Its now throwing up a lot of alert messages which I am uncertain about. example: firefox wants to connect to port ... a975sm.avast.com [184.108.40.206] = ICMP  Echo reply ... Someone on address a975sm.avast.com wants to send ICMP packet to your machine. Usually, what I'd do is to google for the answer, instead I get problems associated with other problems. I can't seem to locate a Kerio site which tells me how to approve rules. Can someone help?