I have a Belkin Router connected to my cable connection. Its Firewall is forever blocking ARP ICMP packets from the server I am connected to, either when I have the block WAN ICMP on or off, I know this behavior is exspected, but it is correct that I should be blocking all these ARP ? Also my server (well its a winxp box) has logged 2 (from same source) ICMP connections that the firewall has let through, it has 2 ports open for emule, is that someone targetting those ports specifically, eg port scan, or is it misrouted ? It is the first time I have ever encountered this, my server is currently NOT running any software firewall, im thinking of installing one so I can have tight rules for the open ports, but leave everything else open (its a LAN file server and web developement server as well). Will the built in XP SP2 firewall be ok for this, or should I look at a Kerio 2-like firewall ?