1) PingPlotter uses standard DNS lookup Windows API calls to resolve names into IPs. Make sure you're entering the names plain - without any additional protocol specifiers or slashes or colons. Try using just
www.nessoft.com. If you've already tried that, are you having any problems with your DNS servers / service? Maybe it's a temporary problem. I had some problems with my DSL provider's DNS service last week, and I've also had instances where my VPN software would mess with the DNS server settings and cause problems. In general, if you can go to a command line and ping a server, then PingPlotter should work as well (ie: if "ping
www.nessoft.com" works, then entering "www.nessoft.com" in PingPlotter should work too - no quotes, of course).
2) Some routers block ICMP TTL Expired packets. Have a look here for more details:
http://www.nessoft.com/kb/29- Pete
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