Can you experts explain some of the things showing up in my CHX log file? - One of the PCs on my LAN (it is running Win98 ) sometimes sends UDP packets from source port 1025 to destination port 192 (dest. mac = ff ff ff ff ff ff, dest ip = 255.255.255.255). There are always 3 of those packets at a time. Any idea what these packets are? - My router sometimes sends unsolicited ARP replies to my PC. The packets always occur in pairs (both at the exact same time). I am currently blocking those. Why is the router doing that, and should I allow those packets? - Occasionally I see an ICMP type 3 code 3 (destination unreachable: port unreachable) packet try to go out to the DNS server. Those are currently blocked. Does this mean the DNS server is trying to connect to one of my ports? Why would it be doing that? - I can see the Win98 computer send DHCP requests from ip 0.0.0.0 port 68 to ip 255.255.255.255 port 67. It's just one UDP packet. The same thing happens for a WinXP computer on the LAN, except that frequently it will send 2 or 3 additional UDP packets from ip 192.168.1.34 port 68 to ip 255.255.255.255 port 67. So right after it gets its IP from the DHCP server, it sends a few more packets to the server. But the Win98 computer never does that. Just curious as to why the WinXP computer sends additional packets? Thanks for any insight you can give me!