Network
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Checkmk: Notifications about Mastodon
Checkmk can send notifications internally via a number of services - and via Mastodon three lines of script as well!
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Checkmk x Telegram: notifications, status, fun
Receive notifications from Checkmk directly via Telegram? No problem! Get status of hosts and services manually? Gladly! That's how it's done:
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Set up FritzBox VPN via WireGuard
FritzBox-VPN via WireGuard makes the VPN connection to the home network a whole lot easier. Setting up WireGuard is a breeze.
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VPN with Tailscale - easy and free
Secure and above all easy access to the home network - the promise of Tailscale. What good is the service from Canada?
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QNAP TS-133 in the test: Power-saving mini-NAS
With the QNAP TS-133 there is a new and particularly quiet entry-level NAS for the home office and at home. Is it worth buying?
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Setting up FritzNAS: Everything you need to know
With the FritzNAS function of your FritzBox you can easily set up a simple NAS system. This is extremely practical.
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Router Freedom: Set up your own FritzBox at NetCologne
Router freedom is all well and good. If you just want to install a new router on the cable connection, you have to reckon with difficulties.
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Fritzbox: Set up VLAN subnets via switch
With a switch, you can operate several networks with their own IP ranges behind the router. We show how using the example of FritzBox and SG250.
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Ubuntu: Configure network in the terminal – for beginners
Ubuntu offers its own way to configure (W)LAN via text file: Netplan. You can read here how this works for a normal (Fritzbox) home network.
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Fritzbox: Set up a second home network with an old box
Still have an old Fritzbox lying around? Then you can easily set up a second, independent sub-home network - including Internet access, of course. You can see how this works and how it is connected here.
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Monitor Philips Hue devices
This is how your Philips Hue lamps are monitored with Checkmk - for a better overview, nicer information and automatic alarms. And just because it's fun :)
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Build a wireless mini NAS with the Raspberry Pi
A small, flexible and above all wireless NAS that is also fast enough? No problem with the Raspberry Pi 4 and OpenMediaVault!
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Use ownCloud server in the home network
An ownCloud server can be easily operated as a Docker container in the home network. It only gets a bit tricky with the storage location for the files.
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Containers – and why you should know them too
Containers are now so easy to use that they are also interesting for normal Windows users. The how and why is here in brief.
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This is how you test the maximum bandwidth in the home network
With iperf3 you can check the maximum transfer rate in your network quickly, easily and free of charge - under Windows, Linux, MacOS, Android.
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Kodi 19 Matrix: Live TV via cable Fritz boxes
To watch live TV directly in Kodi, you don't necessarily need a tuner card - the cable Fritzbox can serve as an external stream supplier.
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Download Checkmk and agents in the terminal
Here you will find a brief description of how to download the various Checkmk editions and agents via CLI.
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Checkmk 2.0: Create PDF reports
Reports can be designed in great detail in Checkmk - and filtered in many places. Here you can see the creation of a sample report step by step.
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Set up the Raspberry Pi as a router
With a special Linux distribution, the Raspberry Pi becomes a router or access point in no time at all – including ad blocker and VPN support!
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NAS or Cloud: Which is Better for Me?
Opinions differ on the question of whether a NAS or cloud is better. We tell you what you really need.
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Instructions: Use SSH on Windows 10
SSH is handy for controlling other computers. Of course you can also use SSH under Windows 10 - without additional software!
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Do-it-yourself “NAS” – with MSI Cubi and Ubuntu
Server instead of NAS: Web GUI, media streaming, network shares are set up quickly - and there is still a lot of potential that depends on every purchased NAS.
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NAS? You don't need it, there's a better way!
NAS aren't just network storage, they're entire servers - and as such, much worse than real servers! More expensive, louder, less flexible, less free...
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Checkmk: Embed external websites in dashboards
If you want to add external web resources to Checkmk dashboards, you need a tiny, simple detour - via an internal resource ;)
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Checkmk: Monitor Android - using storage space as an example
Android systems can also be monitored with Checkmk without an agent: You can simply pick up the desired data via curl.
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Click paths: Set up media streaming under Linux
If you want to stream music, videos, pictures in the LAN, try MiniDLNA: Entering your media folder is sufficient - it couldn't be easier!
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Checkmk: Shell access in the dashboard
PHP Shell can be easily built into Checkmk dashboards - this saves one or the other external terminal session.
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Synology NAS: Add custom repositories
You can install software on a Synology NAS from many more sources than specified by the manufacturer. We show you how to do it.
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Click paths: Expand QNAP App Center with repositories
With a simple URL, you can expand QNAP NAS with hundreds of useful tools - including a lot of open source!
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Finding Synology NAS on the network: Three ways to get there
To set up a NAS, you need to know the IP address. We show you three methods to find them for a Synology NAS system.
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Breadcrumbs: Enable Video Streaming/Cast in Edge
You can also activate the well-known "Play on TV" from YouTube and other videos in Microsoft Edge - here in brief:
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Synology and QNAP: Test NAS functions in the browser
You want to get an impression of how the NAS devices from Synology and QNAP operate in practice? Then we have the solution!
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Instructions: Rename iPhone or iPad - and why you should do it
Every iPhone and iPad has a name that you can set. We'll tell you here how it works and why it's worth it.
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Android: Share WiFi and show WiFi password
Modern smartphones save the passwords for WLAN access in a secure area - so you don't usually have to remember them. But what if you enter the password yourself...
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Test Checkmk 2.0.0i1
Checkmk can easily be operated in parallel in several versions - with a few omd commands, the 2.0.0i1 runs with a real, existing instance.
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Checkmk 2.0.0i1: New GUI and features in the picture
The IT monitoring Checkmk in a completely new guise: The preliminary version of the Enterprise Edition shows a completely new user experience - a better one!
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Install the LAMP web server on the Raspberry Pi
The Raspberry Pi is wonderfully suited as a small web server. We'll show you how to get the LAMP package onto the Raspberry Pi and create the first websites.
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Activate and set up captive portal in FritzBox
With a captive portal you can control your guest WLAN much better. We will show you how to set it up on the FritzBox and what you have to pay attention to.
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Set up port sharing on the FRITZ!Box
Port releases enable access to certain services on certain computers in the LAN - a technique that everyone should be able to master.
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Factory reset Synology NAS without data loss
If your Synology NAS is no longer as good as you, you can restore the factory settings or reinstall the DiskStation Manager.
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Synology NAS: Use external hard drives and USB sticks
You can easily connect USB hard drives and sticks to your Synology NAS system to expand the storage. We show how to do it.
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Powerline or WiFi repeater: which is better?
Anyone who buys a house or moves into a larger apartment quickly faces the problem that the WiFi does not reach all corners. Especially when the router is due to the telephone…
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Stream videos from PC to TV - with two clicks!
Most of the time, you probably stream videos from your smartphone to the TV using Chromecast. This is also possible from the PC - via VLC media player.
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Checkmk on the command line – now at cli.help
Sometimes the command line is popular with Checkmk - for example for updates, tests, ad-hoc configuration or individual queries. Here's syntax help.
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Fully use SMB-1 shares again with macOS and Windows 10
With MacOS Catalina and Windows 10, SMBv1 is gone. Unfortunately, many releases no longer work as a result. However, you can still access the network drives with MacOS and Windows. We…
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Instructions: Set up Raspberry Pi as NAS with OpenMediaVault
You want to use the Raspberry Pi as a NAS? With OpenMediaVault this is not a problem. We will guide you through the setup of the Pi network storage.
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Clone hard drives under Linux - also via the home network
Imaging is child's play with Linux: With dd you can clone hard drives or create backup images. And that even works over the home network. That's how it's done:
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Set up the router correctly: no more WiFi problems
The quality of the WLAN reception depends heavily on the location of the router. We will show you what you should pay attention to when setting up the WLAN router and how you can avoid WLAN problems.
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Use SSH without passwords (Ubuntu)
With SSH you don't need any passwords: you automatically authenticate yourself in the background using a pair of keys - in two simple steps.
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Using SSH on Ubuntu
The classic SSH is still the first choice for long-distance connections: secure, flexible, available almost everywhere and super easy to use. That's how it works:
