Network
Windows Network, Ethernet, WLAN, ...
Find IP addresses in the network even if their firewall is enabled
If you want to get a quick overview of all active devices in a network, you can do this with network discovery, commands in the command prompt, in PowerShell or with special IP scanners. The PowerShell commands presented at the beginning of this post give a quick overview of all devices on the local network and may make special programs for scanning the network unnecessary. ... continue reading
cmd commands for network analysis
With simple commands a quick overview of the current network settings can be read out and thus possible connection errors can be found, or an overview of other devices in the network can be obtained. The commands described here are cmd commands for Windows. They are entered via the command prompt: cmd. ... continue reading
Ping using a Port | cmd vs. PowerShell: Test-Netconnection
As is well known, the tool ping can be used to test the access to a certain network device and its response time. Not all devices will respond to a ping, but they may respond to a particular port if a particular network service is provided through it. Windows PowerShell allows you to test a specific port using Windows board tools. The psping tool can also measure the response time to a specific port. ... continue reading
Testing the Internet: availability - stability, disruption?
More important than the speed of an Internet connection is its availability. If the Internet line does not run stably, this can have several causes. The basis for the connection is of course provided by the provider, who guarantees his customers the highest possible availability. If you operate a router, switch or other devices in your home network, you expand the circle of possible sources of error to include the corresponding devices. In addition, the availability for the individual end device... ... continue reading
WebPush: A page wants to send you notifications
Apps have been able to do this for a long time, but the ability for websites to send notifications is somewhat newer. With the help of WebPush, users can be actively notified even if they are no longer on the corresponding website. The only requirement is that the browser is open. ... continue reading
Alternative router firmware: OpenWrt and no longer DD-WRT
Router manufacturers usually provide updates for their products only for a limited period of time, often leaving security holes on older devices unpatched. One possibility to provide the hardware with an up-to-date operating system (OS) again is offered by the freely available router firmware: OpenWR ... continue reading
Anonymous and unknown on the Internet: Incognito vs. VPN vs. Tor
If you really want to be private on the Internet, you should not rely on incognito mode. ... continue reading
show own public IP - what is my IP address?
current IP address When accessing this website, this IP address is used on the part of the client. ... continue reading
show active network connections and processes | Windows
For a quick overview of which programs or services have an active network connection, they can be listed via simple commands or monitored and analyzed via specific tools. ... continue reading
cmd Portscan - Test devices on the network for their services.
Network devices use specific network ports for communication. As an example, port 80 or 443 is used to call up a web page of a web server. In order to establish a connection with a web server, it listens on the corresponding port, in the case of a web server on 443. Theoretically, any port could be used by the web server operator for establishing a connection, nevertheless, port numbers are standardized and certain numbers should be used for certain protocols, such as port 80 for unencrypted web... ... continue reading
WLAN and LAN network cable simultaneously - Internet access
What actually happens when WLAN and the network cable are connected at the same time? The routing table provides the answer to this question. By adjusting the routing or the metric in the TCP/IP settings of the adapters, the desired behavior can be set. If you want to see the settings noted here in action, you can do so in a short video. ... continue reading