Network

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Understanding, analyzing or expanding your own network: Basics for the home network.


Stories for "Network"

Preview Set up network for home: Expand and improve your LAN / Wi-Fi

Set up network for home: Expand and improve your LAN / Wi-Fi

changed: 2022-09-29 from Bernhard (Initial Release: 2022-06-13)

What do I need to improve Wi-Fi reception and get more network connections at the same time? Do I need a repeater, mesh Wi-Fi, access point, switch, or a router? What exactly is a router? How can I combine different devices from different manufacturers? you'll find answers to these questions. But let's take things one step at a time: In the beginning, right after the house connection, there was the modem. For those who prefer a video, the content of this article can also be accessed as a YouTube... ... continue reading

Preview Alternative router firmware: OpenWrt and no longer DD-WRT

Alternative router firmware: OpenWrt and no longer DD-WRT

changed: 2022-09-19 from Bernhard (Initial Release: 2022-05-07)

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: OpenWRT. In addition, OpenWRT can extend the functionality of the router with additional services, such as VPN, additional statistics, or when using multiple devices, with WiFi roaming, see also: Set up ne... ... continue reading

Preview OpenWRT hardware recommendation - available devices 2022

OpenWRT hardware recommendation - available devices 2022

created: 2022-09-15 from Bernhard

OpenWRT provides a uniform and up-to-date software for different network devices like routers or access points and delivers countless additional setting options, software packages and functions. This makes it possible to combine new and old devices from different manufacturers and, among other things, to use low-cost hardware in a common WiFi, see: Setting up a home network: Extending LAN and WLAN | Improving. ... continue reading

Preview Find IP addresses in the network even if their firewall is enabled

Find IP addresses in the network even if their firewall is enabled

changed: 2022-05-09 from Bernhard (Initial Release: 2022-04-29)

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. For expanding your own network, see also: Set up network for home: Expand and improve your LAN / Wi-Fi. ... continue reading

Preview cmd commands for network analysis

cmd commands for network analysis

created: 2022-04-29 from Bernhard

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

Preview Ping with Port | cmd vs. PowerShell: Test-Netconnection

Ping with Port | cmd vs. PowerShell: Test-Netconnection

changed: 2022-08-15 from Bernhard (Initial Release: 2022-04-29)

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 Tcp-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

Preview OpenWRT - Display bandwidth of individual devices (monitor)

OpenWRT - Display bandwidth of individual devices (monitor)

changed: 2022-07-28 from Bernhard (Initial Release: 2022-06-15)

Most routers show an overview of all connected devices, some show a snapshot of the bandwidth used, but hardly any give an overview of the amount of data consumed over a certain period of time and certainly not by which device it was consumed. To make the consumed bandwidth a bit more transparent, I was looking for a way to historically record the bandwidth per device. The firmware of normal routers hardly offer a possibility here, differently when using an open source firmware, for example Open... ... continue reading

Preview OpenWRT LoadBalancing - LTE backup internet line multiwan

OpenWRT LoadBalancing - LTE backup internet line multiwan

created: 2022-05-26 from Bernhard

With OpenWrt, it is possible to combine two Internet connections, which not only increases availability, but also bandwidth: In the test setup, the download and upload rates added up, the Internet connection thus becomes twice as fast and should one connection fail: the Internet simply continues to function over the remaining connection. ... continue reading

Preview LAN / WiFi Speed Test: Test network speed with iPerf

LAN / WiFi Speed Test: Test network speed with iPerf

created: 2022-09-23 from Bernhard

To measure the speed in your own network, you can use the free command line tool "iPerf". Two devices are needed for the speed test. One to start the server mode, another to connect to the server in client mode. The output of the actual measured speed between the two devices appears on both the server and the client. ... continue reading

Preview delete automatic redirect to https in Chrome: localhost

delete automatic redirect to https in Chrome: localhost

created: 2022-08-12 from Bernhard

When calling a test page without HTTPS on localhost I recently had the following phenomenon: http://localhost was redirected to https://localhost: The test page could no longer be displayed. ... continue reading

Preview The best browser: Google Chrome and Blink vs. Firefox

The best browser: Google Chrome and Blink vs. Firefox

created: 2022-10-01 from Bernhard

The browser is playing an increasingly important role. In addition to its original purpose, the presentation of static content, multimedia content or applications can now be consumed via the browser. ... continue reading

Preview Wi-Fi in the area: view and find the best Wi-Fi channel

Wi-Fi in the area: view and find the best Wi-Fi channel

created: 2022-05-26 from Bernhard

If there are several WLAN networks in the vicinity, they may influence each other. For maximum speed and stability, your own WLAN should preferably use a Wifi channel that is not used by any other. I have summarized general information on how to expand your own network in a previous article: Set up network for home: Expand and improve your LAN / WiFi. ... continue reading

Preview call localhost: IP address "127.0.0.1", "::1" | what is localhost?

call localhost: IP address "127.0.0.1", "::1" | what is localhost?

created: 2022-06-15 from Bernhard

If the computer were a house, “localhost” would be something like “home”. In a nutshell, “localhost” is the network name for your own device: for itself. ... continue reading

Preview block certain websites: redirect websites

block certain websites: redirect websites

created: 2022-06-15 from Bernhard

When a web page is called up, the domain part of the URL is first converted into an IP address. Responsible for this is the name resolution: DNS. The domain entries contained in the hosts file have priority and are not, as conventionally, queried at the DNS (which IP address has the domain ...). ... continue reading

Preview Show WLAN users: connected devices

Show WLAN users: connected devices

created: 2022-08-08 from Bernhard

To find out which devices are currently connected to your WLAN, they can be displayed via the router or a network scan. ... continue reading

Testing the Internet: availability - stability, disruption?

Testing the Internet: availability - stability, disruption?

created: 2022-05-16 from Bernhard

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

Preview WebPush: A page wants to send you notifications

WebPush: A page wants to send you notifications

created: 2022-05-08 from Bernhard

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

Preview Anonymous and unknown on the Internet: Incognito vs. VPN vs. Tor

Anonymous and unknown on the Internet: Incognito vs. VPN vs. Tor

created: 2022-05-06 from Bernhard

If you really want to be private on the Internet, you should not rely on incognito mode. ... continue reading

Preview show own public IP - what is my IP address?

show own public IP - what is my IP address?

changed: 2022-08-17 from Bernhard (Initial Release: 2022-05-06)

Find out the current IP address on the Internet When accessing this website, this IP address is used on the part of the client. ... continue reading

Preview show active network connections and processes | Windows

show active network connections and processes | Windows

created: 2022-04-29 from Bernhard

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

Preview cmd Portscan - Test devices on the network for their services.

cmd Portscan - Test devices on the network for their services.

created: 2022-04-29 from Bernhard

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

Preview WiFi and LAN network cable simultaneously - Internet access

WiFi and LAN network cable simultaneously - Internet access

changed: 2022-05-10 from Bernhard (Initial Release: 2022-04-29)

What actually happens when WiFi 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

📁 topics for this category "Network"

Webhosting

Preview Webhosting

Since the start in 2003, not only this site has changed a lot, but also the technical possibilities when hosting a website.Originally I started with a small webspace, later I rented a virtual server with Plesk, and today I run the website in simple Docker containers.Today there are certainly much more options for running a website than back then, which on the one hand simplifies the operation on the other hand there are also new requirements for a website today. However, the topics described he...


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