This is weird. I hope someone has some insight. I am running a network with Windows 2000 Server. DHCP is assigning addresses in the range 192.168.1.21 - 192.168.1.70. My firewall keeps blocking and logging attempts to connect to certain addresses in my network. The attempts always come from either 198.49.161.200 or 198.49.161.206. NSLOOKUP shows that those are both crl.verisign.com. What is really freaking me out is that the addresses it is trying to connect to do not belong to any computer on the network, but when I go look at my DHCP leases, the IP address is listed there with a blank network name?! Everything else on my network has a name. The first time I noticed it, I deleted that entry in DHCP and excluded the address from distribution. A few days later, I noticed the firewall had begun blocking and logging attempts at another address. I checked DHCP and, sure enough, there was another new address there with a blank name. I deleted it and excluded it as before. Now, I checked again. There are 2 more with blank names! The firewall is logging attempts to connect to them as well. What is going on???