>>McAfee AntiVirus Plus is scanning the network to verify for suggested licensing. This is particular irritating when traveling. Earlier on this week, it told me about the entire network neighborhood of the company. Then, it is at the hotel. Anyone would know how to turn that off?
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>Uninstall it and use MSE instead.
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>You might consider bringing along and using a hardware firewall when you travel. Hotels are notorious for hacking, if they're not set up to isolate guest users from one another. As a byproduct this would also fix your problem with McAfee, as there would be no other hosts on your local subnet.

HW firewall I had not thought about, but usually I try to find hotels offering cabled LAN as well and then I have a tiny router giving me a separate NAT/subnet...