Lesson 4 - NETWORKS - TEACHING COMPUTER NETWORKING ~ NEWS: An Update

To use Advanced IP Scanner, all you need to do is download and install it, then run the program to analyze your wireless network. Just click the large green button that says SCAN .Wireless headphones fitted with a receiver use either radio frequency (RF) or infrared technology to communicate with a transmitter that is connected to the sound source, say a television. In most cases, however, when someone refers to a wireless device, they are speaking of a networking device that can pass data to other wireless network gearThe Ethernet protocol The term "protocol" refers to the customary sequence of communication messages exchanged among devices that they use to get each other's attention, to indicate that they are ready to communicate, to pass data between them and to provide the status of the messages exchanged.Communication adverse: (1) A friend's Windows laptop could be malwared/exploited, and attempting to use its WLAN access to probe for other WiFi device MACs and data, or to listen into/modify their sessions. (2) A neighbour or passing wardriver could try to take advantage of the WLAN or "listen in" to communications on it.Wireless network devices use _____ to communicate with each other. asked Nov 25, 2019 in Computer Science & Information Technology by Qdoolaydo. A) satellites B) radio waves C) fiber optics D) DSL. information-technology; 0 Answer. 0 votes. answered Nov 28, 2019 by Fashion

What is a Wireless Device? (with pictures)

Wireless network devices use radio waves to communicate with each other. The greatest vulnerability to the network is that rogue machines can "eves-drop" on the radio wave communications. Unencrypted information transmitted can be monitored by a third-party, which, with the right tools (free to download), could quickly gain access to yourIn the example below, two wireless devices are configured to create a point-to-point link. Omnidirectional Access Point and Client Link. 1 represents computers connected with Ethernet cables to the wireless devices. These computers are connected to each other over the Point-to-Point link. 2 represents the wireless device setup as an Access Point.NB: If the client A & B are close enough to hear each other, it would be possible for them to communicate directly, but implementing the communications like this would introduce a lot of complexities. A great primer on WiFi is Matthew Gast's book 802.11 Wireless Networks: The Definitive Guide (see the link for a "copy"). In particular Chapter 4.Wireless network devices use _____ to communicate with each other. (1 point) radio waves DSL fiber optics satellites. radio waves. For the nodes on a network to communicate with each other and access the network, each node needs a _____. (1 point) network adapter DSL modem router hub. network adapter. On a network, a(n) _____ helps prevent data

Network fundamentals - Switches, LANs, routers and other

All the wireless devices connect to the router and the internet without issues... It's just when they try to communicate with each other. I experimented with the desktop by using the ethernet adapter and then the wireless adapter... same results. My wireless devices using my previous router could communicate with each other.A _____ is a device connected to a network such as a printer or a game console. You just studied 20 … Wireless network devices use _____ to communicate with each other: radio waves . network adapter (each nodes needs this) for nodes on a network to communicate with each other and access the network. switch (on a network ) helps preventWireless network devices use _____ to communicate with each other. Radio waves. For the nodes on a network to communicate with each other and access the network, each node needs a _____ Network adapter. On a network, a(n) _____ helps prevent data packets from colliding with each other.18) Wireless network devices use _____ to communicate with each other. A) fiber optics B) satellites C) radio waves D) DSL Answer: C Diff: 2 Section Ref: Transmission Media 19) For the nodes on a network to communicate with each other and access the network, each node needs a _____.Nest products are designed to work together, so they can communicate with you and each other in a variety of ways. They use Bluetooth, NFC, Wi-Fi, and Thread which is a low-power wireless mesh...

The question I'm asking is, like any security, a bit of open-ended, and in the end - like all safety - it comes to a personal stability between ease/usability vs. risk/safety:

Should I let customers' devices (1) communicate in the neighborhood with each other on my WiFi AP, or (2) segregate them from each other, or (3) is there any "middle ground" between those possible choices?

The drawback being, I have no idea what person devices/applications' needs and expectancies may well be, nor how important any comfort/inconvenience or safety gain can be.

So I'm asking this to get a greater sense of the security knowledge and social issues which I should take note, and how I should assess the problems it raises, so that I will make a good high quality knowledgeable choice.

My LAN is lovely simple at the WiFi side: a pfSense router that also acts as DHCP server, 3 network ports (WAN, stressed out LAN, Wireless AP), and firewall laws setting apart them.

In the past, I've treated Wifi by merely having a commodity AP on a devoted interface of the router, setting up WPA2, gadget segregation, and get entry to control on the AP, and creating laws on the router to prevent any WLAN interface visitors rather then to/from the WAN. From the perspective of my LAN, WiFi safety downside = solved.

I now want to "up my game" a bit. I'm swapping the commodity AP for a Netgear router working OpenWRT 15.05 as an AP, and configuring separate trusted vs parially-trusted digital APs (the primary is for me and can use 802.1X, the second is for friends/family and can use WPA2, or WPA3 when it is out and extensively supported). The two units of traffic might be on separate VLANs between AP and router.

It's essentially the "friends and family" AP setup that is relevant on this query. I'm not at all considering stressed LAN get entry to, or irrelevant traffic "jumping" to a depended on system, because that can be controlled with VLANs and firewall regulations at the router itself. But if devices are on the AP, then I've to make a decision what setup to undertake at the AP itself, regarding inter-device traffic.

In the previous I'd have mechanically gone with configuring the AP so that devices are segregated - no direct visitors between them within the AP or LAN. But nowadays, it occurs to me, folks would possibly need/need/expect their separate devices (and those of buddies) to be able to communicate with each different at the WLAN. I do not need that need, so I'm no longer conscious in any respect whether or how much blockading inter-device AP traffic may well be an issue to some other folks.

Examples:

Communication recommended: (1) A chum with an iPhone + iPad who may need them to communicate. (2) Two friends would possibly need to ship a file between them in some way.

Communication hostile: (1) A pal's Windows computer may well be malwared/exploited, and attempting to use its WLAN get entry to to probe for different WiFi gadget MACs and data, or to concentrate into/alter their classes. (2) A neighbour or passing wardriver may just check out to profit from the WLAN or "listen in" to communications on it.

There might be other dangers I will have to be mindful, however those appear to be the principle dangers related to WiFi segregation problems.

So there are just right the reason why segregating user devices could be beneficial to my own peace of thoughts as well as the chums+circle of relatives who use my WiFi. But how disruptive wouldn't it be, and is it still good or impractical to do it these days, given how briskly usage (including direct user-to-user) may well be converging? Or most likely they use other generation like Bluetooth/NFC so it's not an issue in any respect?

I don't truly have any smart way to gauge how disruptive or okay blockading inter-device traffic could be for customers and apps, and I would not have an actual sense of the real extent to which it's going to actually benefit customers or I in terms of safety and privacy. I do not use any apps or devices myself, which might cause this factor.

In a super global I'd like to segregate all WiFi devices from each different "on principle", however I don't know the impact of any disruption this will have, or how a lot of a problem it is (what solutions exist), if anyone is disrupted.

It's additionally conceivable (hypothetically) that the actual factor may well be overwhelmingly the machine to AP periods + person visitors, which can't be segregated anyway, possibly this makes any machine segregation safety advantages miniscule in consequence.

So my query will also be expressed like this:

What is the realistic state of affairs and details I need, each about safety and about present/medium term everyday WiFi utilization/expectation/connectivity, to decide how to deal with this?

What standard approaches (rather than "802.1X universally required") are adopted by individuals who have considered this ahead of configuring their setup?