You may have heard about the latest Wi-Fi vulnerability in the news called “KRACK” or “Key Reinstallation Attack.” This is a security flaw in the WPA2 protocol that could allow a third party to intercept network activity between a router and a device. It does this by taking advantage of a problem with the way the client (your mobile device or computer) authenticates with the access point (the router).
Perry has a NetGear C6900 modem/router and it just drops out for several seconds from time to time. Leo says that routers and cable modems do wear out over time, and if he gets a lot of drop outs, it could be time to replace it. But Perry's router is only six months old, so that shouldn't be happening. Leo says he could try updating the firmware. PadreSJ says that the NetGear Combo units start having memory issues that cause server busy errors. Perry should go into his settings to find the logs and see if he is getting errors like that.
David lives in a fifth floor apartment with 100 Mbps WiFi available. He can't get it on his floor, though. What can he do? Leo says that WiFi is generally limited by distance and David is just too far away from the access point. He needs one on his floor. If he can get his own modem, that's what he should do. He could also try getting a group together to get WiFi extenders and put a few on every floor. That would help.
Matt wants to get rid of his cable modem/router and get his own. Leo says that's a good idea. He'll most likely have to keep the modem, but he can disable the router in the firmware and use his own instead. Leo recommends an ASUS 3200.
Carrie has a Lenovo Yoga 2 convertible and it won't connect to the internet. It's asking for an adapter. Leo says that the Yoga is wireless, so it shouldn't need an adapter. Leo advises going into the Device Manager by pressing Windows Key and typing "device," then pressing Return. This will show her a list of all her hardware. That will show her if there's a problem with the networking device. She can delete it and then restart the machine. Windows will then reinstall the device driver. There's also a WiFi on/off switch.
Kevin has a Toshiba laptop and his network adapter went belly up. Can he use a third party adapter? Leo says that Kevin should be able to. Reliance on proprietary adapters went by the wayside thanks to pressure from the EU.
Keith wants to know how strong his WiFi network is. Leo recommends WiFi Analyzer. For the Mac, there's WiFi Explorer. It will give him a line graph with signal strength according to channel. It's $20.
He can find other WiFi analyzer apps at netspotapp.com. It may be that all he needs to do is reset his WiFi settings.
Jose has issues with WiFi reaching to the back bedroom in the house. He gets practically no signal at all on his phone back there either. He's told it would be a major issue to move his base station to make it better. What should he do? Leo says that it's a common problem that is largely due to congestion from everyone in the neighborhood. The key is to get an extender. He'll want one that's from the same company. It will cut his bandwidth in half, however, so that's not an ideal solution.
Terry got the Luma mesh router and he gets pretty good 100 MB bandwidth everywhere but his master bedroom, which is about a third that. He even bought another module and it didn't help. Leo suspects that instead of a daisy chain extension, it's more like a star pattern, and that could end up with some dead or weak spots.
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Trevor has a Netgear modem connected to his Google OnHub router. Everything works fine except for an old laptop. Can he connect hardwired to a repeater? Leo says that a second Google device would work because they have two ethernet ports.