[Jack of all Trades]

Thanks for the suggestions. That's just what I did. It was Worldcom that was pinging me. It was quite frustrating to get them to stop. I've since switched to cable. My trusty Linksys router sits between me and the outside world. Reviewing the access logs has helped me keep track of things since the switch.

[justlurking]

It was Worldcom that was pinging me. It was quite frustrating to get them to stop.

Was it actually a WorldCom server? If so, it could have been one of two things: One of their own systems had PC Anywhere and was misconfigured. Or, they had actually written something to search for unsecured PC Anywhere ports so they could warn/notify their subscribers.

The other possibility was that it wasn't Worldcom at all: it was just another subscriber. Unless they have their DNS servers configured so that reverse lookup tells you something useful, it's hard to tell.