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24 votes
Accepted

Why can Ethernet NICs bridge to VirtualBox and most Wi-Fi NICs don't?

The issue isn't really with the WNICs, it's with the architecture of IEEE 802.11 (Wi-Fi) networking. The IEEE 802.11 standard requires APs to reject frames from MAC addresses that have not ...
Spiff's user avatar
  • 107k
13 votes
Accepted

AP and "radar detection" channels

It's perfectly legal to use them. Those channels overlap with frequencies that were once used by certain kinds of radar systems, and some legacy radar installations may still use those frequencies. In ...
Spiff's user avatar
  • 107k
11 votes

Connecting WAN and LAN ports of the same wireless router

A short cable connects the WAN and a LAN port of the router, and another cable connects another LAN port to the modem. All the 'LAN' ports are connected internally like an Ethernet switch: what goes ...
grawity_u1686's user avatar
10 votes

why does my wifi think my desktop is 10 different devices and why does each one have a different ip address?

Well, if you're running modern OSes, windows included, they have an option for randomised MAC addresses as a privacy option. Since many routers are going to give a different IP per mac address, its ...
Journeyman Geek's user avatar
  • 131k
8 votes
Accepted

Ethernet WAN - safety hazard?

Some homes have in-wall telephone wiring with "RJ-45" 8-position modular jacks, with the center pair (pins 4 & 5) wired as a phone line. You can safely connect a typical RJ-11 (6P2C ...
Spiff's user avatar
  • 107k
7 votes

Turning an old ADSL modem into a WIFI adaptor for PC?

It depends. This will only work if your "modem" (I assume you actually have a modem/router/WiFi-Combo) is WISP capable. If it is you can connect it to a regular WLAN AP. Be aware that this ...
Albin's user avatar
  • 11k
6 votes
Accepted

How does the router know to send packets to a VM on bridge mode?

How exactly does the router know that, to reach a VM, it needs to reach my computer first? Does VirtualBox alter the local network ARP? On Ethernet: The router doesn't need to know. Bridges are ...
grawity_u1686's user avatar
5 votes

Create network option missing on macOS Sonoma despite legacy networks being enabled

You can use the terminal using this commands: sudo networksetup -createnetworkservice AdHoc lo0 Enter sudo networksetup -setmanual AdHoc 192.168.1.88 255.255.255.255 Enter Then you go Settings > ...
Pepillo Grillo's user avatar
4 votes
Accepted

How to setup a WiFi 6E 6Ghz hotspot with Windows with AMD mainboard

The underlying API for creating a hotspot/tether/WiFi access point only supports 2.4Ghz and 5GHz wifi bands in the current build of Windows 11 (22621): Fields Auto 0 Specifies that the WiFi ...
Cpt.Whale's user avatar
  • 8,684
4 votes
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PC network requirements for wireless screen mirroring on smart TV?

Miracast was a technology the Wi-Fi Alliance once promoted for transmitting video over a LAN or over a Wi-Fi Direct link. Wi-Fi Direct was a way to make direct device-to-device radio connections ...
Spiff's user avatar
  • 107k
3 votes
Accepted

is using passwordless wifi dangerous?

If I'm using public free wifi (in a supermarket) on my phone (android), is it dangerous in any way ? If I don't login anywhere, and those apps where I'm already logged in are using https (google, ...
grawity_u1686's user avatar
3 votes

How to share WiFi connection from a MacBook without being connected to internet

CAUTION: Adding the network service in the following step messed up with my network setting, making my apps unable to listen to ports on localhost. If you added the network service this way, remove it ...
lthc's user avatar
  • 31
3 votes

Getting ERR_NETWORK_CHANGED in Chromium with both Wifi and Ethernet connected on macOS

For me, this Chrome bug is what causes the issue. In short, my iPhone was configured as a run destination in Xcode and the manner of networking negotiation led Chrome to believe that the Network ...
felixh10r's user avatar
3 votes

How to hide a Windows computer and Android phone in WIFI network?

You're confusing two entirely different things: discoverability does not imply ability to connect. As long as you assume those are the same, it's impossible to give any useful advice. But this does ...
grawity_u1686's user avatar
3 votes
Accepted

Bridging multiple WiFi networks to Starlink Router

Your Starlink router is already acting as a NAT gateway and DHCP server for your network. You don't need any other devices to perform those roles, and in fact you shouldn't want them to, as multiple ...
Spiff's user avatar
  • 107k
3 votes

Why is Windows 10 not fetching all available WiFi connections in my PC? One is missing

You might not see the name RAJ in the WiFi connection list, but treat the WiFi connection as if it were hidden, and connect accordingly. Open the WiFi connection list. Scroll down to Hidden Network ...
DrMoishe Pippik's user avatar
3 votes

How to fix unable to load routerlogin.net on Netgear C6300 modem router

The trick is to use Seamonkey browser which is available on most OS, I was able to verify that I can successfully load the C6300 router login without issues as of 2024/04. Tested on: Seamonkey (2.53....
Aravind's user avatar
  • 131
3 votes
Accepted

USB 2.0 WiFi Adapter Speed Interpretation

While you are indeed limited to an average data rate of 480MBps, the over-air data rate could indeed be 867Mbps. They are two distinct links. From your computer to your wifi card will only manage ...
Mokubai's user avatar
  • 94.5k
3 votes
Accepted

Windows 10 "Can't connect to this network" until I "Add a new network manually", then it works fine

Uninstall the device in Device Management then Scan for Hardware Changes to reinstall it. (If you're concerned about losing known wireless networks, you CAN backup and restore known wireless networks ...
music2myear's user avatar
  • 43.9k
3 votes

How does the router know to send packets to a VM on bridge mode?

By putting the physical NIC in promiscuous mode, the VM is able to receive ARP requests for its IP address, to which it replies with its virtual MAC address. So the router's ARP table contains an ...
Spiff's user avatar
  • 107k
3 votes
Accepted

Why different behaviour on two PCs, connected to the same Wi-Fi?

There are a number of reasons why this can be, making this an extremely broad question! Off the top of my head, some potential answers may include: Static IPs - One machine may have a static IP ...
Fazer87's user avatar
  • 12.8k
3 votes
Accepted

Ubuntu/Linux: Use WiFi to access a specific LPD/LPR network print server and use Ethernet to access everything else

Edit 1: I'm also happy to have a scripted solution that retrieves IP addresses and updates the routing table, if it's not possible to set this up in terms of the server's URL. IP routing cannot work ...
grawity_u1686's user avatar
3 votes
Accepted

Why doesn’t the ARP command show the router's wireless MAC address?

That's normal; the Wi-Fi access point's BSSID that's used to establish the wireless link is functionally separate from the MAC address that's used with IP/ARP – it's not associated with any IP address ...
grawity_u1686's user avatar
2 votes

I want to force Windows 11 to only use 2.4GHz WiFi. But the driver options doesn't allow this. Is there another way?

Try this Go to Properties > Advanced > Wireless MODE then select > IEEE 802.11b - it works - my WiFi adapter always uses the 2.4Ghz For the record: I am using Windows 11 on a DELL Desktop ...
Tristan Haskins's user avatar
2 votes

Linux command to get mDNS Service discovery and to get its IP Address

I am not sure if you need this for an automation script in which case this may not be the best solution, but a simple ping command will also get you the IP address. See this example: $ ping ...
domjancik's user avatar
2 votes
Accepted

Port forwarding on a Jio router

As others have mentioned, the router's IPv4 is behind CGNAT in Jio Fiber so port forwarding won't work, but each client (device connected) has a static IPv6 address which you can check via ipconfig ...
Pradeep Asundi's user avatar
2 votes
Accepted

My Router/AP rebooted and now Windows computers can't connect to the 5GHz SSID

@JW0914 wrote in a comment above: This is usually due to the router's wireless implementation/settings, or WiFi adapter settings in Windows. Router WiFi Radio Set to an actual channel for 5Ghz, not ...
cjbarth's user avatar
  • 471
2 votes

Is there any way to query a router about the IPs it has already assigned?

No, there is no standard, widely-available way to query a DHCP server about what IP address leases it has given out.
Spiff's user avatar
  • 107k

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