How to convert tabs to spaces in VIM
If you want to convert tabs into spaces in a document opened by VIM, use the following steps: ...
Knowlage
Vodafone WiFi Calling in Germany for admins
Vodafone’s “Wifi Calling” (sometimes named “WLAN Calling”) technical documentation is very poor, so I’ll try to summarize some points I learned. ...
getWebserverNames.sh - a bash script to show certificate information
This article explains my bash script getWebserverNames.sh, which displays information included in a certificate that a server presents to TCP connections
Published a small collection of openSSL scripts on GitHub
I just published a small collection of openSSL scripts on GitHub including one to view certificate information a server. ...
Create a QR-code for WLAN
To generate a QR code for your WLAN the string that has to be converted into a QR code must have the form described here. ...
How to save a coredump of an ESXi-server
If an ESXi-host crashes and shows a “Purple Screen Of Death” usually a coredump is created. This article shows how to save the coredump, if you need to send it to VMware for further analysis. ...
How to clear the local DNS cache
Clients cache the answers of DNS queries for a certain amount of time. Even an answer like “name not found” is cached. To clear the cash before it’s entries are automatically removed you can use the following commands: ...
How to set the MTU-size on Windows (10) interfaces
Sometimes it is necessary to reduce the MTU size of network interfaces. This post shows how to do it on Windows 10. Should work on not too old versions too. ...
Enable Copy&Paste in VMware vSphere Remote Console
When accessing a virtual machine running (VM) on VMware vSphere through “Remote Console” you cannot use Copy&Paste from your desktop into the VM. This article will describe how you can enable this through the advanced settings of a VM. ...
How to configure a reverse proxy for Confluence Server
To use HTTPS on port 443 to access your Confluence server it is best to use a “reverse proxy”. This article shows how to do it with Nginx.
Useing Umlauts in Usernames with Kantega's Kerberos SSO plugin
If you have usernames containing (German) Umlauts in Confluence or Jira authenticated by Active Directory, the automatic Single Sign On with Kantega’s SSO plugin won’t work by default. ...
How to convert SSL-certificates from PEM- to DER-format and vis versa
This article explains how to convert SSL-certificates from PEM- to DER-format and vis versa useing openssl on the command line.
How to search for macros in Confluence Server
You can use the Confluence search to find pages that contain a specific macro. ...
How to access passiv node in Juniper SRX cluster and how to transfer files to it
If you do not have a console connection to or a management interface on the passive node of an Juniper SRX cluster, you need to reach the passive node from the active one. Here is how: ...
How to recover JunOS from the boot-loader
If your Juniper SRX or EX does not come up with it’s JunOS operating system, you might be able to restore JunOS through the “boot-loader”. This article will show how. ...