Time Capsules are still fully supported up to the lastest macOS (currently Big Sur).
Time Machine is the software part of it all. Time Machine will perform recursive backups to
an external drive (USB, Thunderbolt, FireWire, ...)
a Time Capsules internal drive
an external drive connected to an AirPort/Time Capsule via USB
any Time Machine compatible network ...
Yes, supported Apple devices are able to be connected to a WiFi network (i.e. an access point) and communicating via this "temporary" peer-to-peer network simultaneously. The protocol that is used is called AWDL (Apple Wireless Direct Link).
A single WiFi "card" can do this, yes - you do not need two WiFi "cards".
I would say ...
The SystemConfiguration folder is in the top (root) level Library folder (/Library/Preferences/SystemConfiguration), not in the User Library folder (~/Library/Preferences/SystemConfiguration).
You may want to be careful about which files you delete, as that may have consequences. Make sure you have a backup, and can access the drive from an external, if ...
There are two keychains that store network credentials. I would make a new user on the Mac and verify if your wifi network credentials are in the system keychain or user keychain.
disable automatic login for this test
Make a new admin user
If the network connects after a restart and you only log in to the new user account, use keychain access to ...
You can always run a local storage server based on SMB, WebDAV or similar protocol - and access it from other units that are connected network-wise to that storage server.
You do not need internet connectivity, nor do you need an AirPort Extreme.
You can use any (reasonable) kind of network switch to connect multiple Macs together, and you can use any (...
The iPhone can connect to any SMB share via the Files App.
Enable sharing for a folder in Windows
On the iPhone: Open the Files App
Tap the icon with the 3 dots in the top right corner
Tap "Connect to Server"
For the address use smb://x.x.x.x (where x.x.x.x is your computers IP address or network name) and enter the corresponding username and ...
You can use the iOS app PhotoSync which will synchronise your photos with its "companion" app running on Mac or Windows. The only requirement is that both iPhone and Mac/Windows are on the same LAN.
So long as the companion app is running, you control photo transfers from the iPhone.
The iOS app is "free", but only transfers low res ...
The iOS app GoodReader allows you to start a web server over wifi that shares GoodReader files (which can include photos). Your Windows PC should be able to connect using wifi and a web browser. GoodReader is a free download, but I don't know if this feature will be enabled without paying some $.
BTW, I have no connection with the developer. However I have ...
Please be careful when re-entering your password. When you see the same SSID (Network name) and your device is asking you to enter a password, it is possibly an "evil twin attack"
Apple isn't just dropping the ball here. They are training their users to take a dangerous step just to maintain a wifi connection that has worked for years, password ...
I had this problem on my iPhone mini 12, from the modem settings(gui: http://192.168.0.1 for me) I set the control channel to 36/80 and STBC Tx to off. I also made the wireless connection type 5Ghz. I am using a Netmaster modem, this solves the problem of obtaining the IP address of the phone or computer.
maybe is an hardware issue with the wifi card.
do you have an external usb wifi to make the test?
if yes then connect it and run the same ping command and see what happens.
Also you can check if drivers are correctly installed for the wifi card. :)
Sounds like there is no DNS Server in your Network-Settings. Preferences > choose your network (green) > go on "Advanced" > DNS and Search Domains. Which entry? Do you have a Proxy entry? A leftover from your AD in your Company?
Probably your Router is misconfigured not allowing other users to connect. This could happen with a new OS too.
It is very vague to say whether or not something is "special". If you're asking if there's something non-standard or invalid about the options/headers from macOS' TCP package - then the answer is no.
You have used the program tcpdump to produce the packet listing in your question. You could increase the verbosity of that program (-vvvv) to see more ...