Proxmox – Block Incoming Traffic to Proxmox Hosts on Standard Ports Like SSH/22 and Use Non Standard Ports Instead

Problem There are good reasons that you might want a specific service to listen to a port number that is different from the “standard” port. By standard I mean like port 22 for SSH or 80 for HTTP. Like when you have multiple webserverers running on the same host that cannot share port 80 with … Read more

Proxmox – Change and Apply Network Interface Configuration via Command Line Interface

Problem When you need to change the network configuration of your Proxmox hosts you probably want to do that via the web interface. Most of the times. But then there are situations when you need to make changes directly to the /etc/network/interfaces file for example. Like when you need to add post-up iptable commands. Then … Read more

Workaround for Android error „The connection pool for database ‘/data/user/0/com.android.providers.contacts/databases/contacts2.db’ has been unable to grant a connection to thread X (ContactsProviderWorker) …“

If you are living with Android Version 4.x or Cyanogenmod 10.x then you maybe recognize problems with some apps that want to retrieve data from the contacts database (contacts2.db). Remarkable indicators concerning my phone were: Contact app did not find any contact Other apps lacked or hung Enormous battery drain The error stays for quite … Read more

Setting up a Raspberry Pi as a download station with the help of JDownloader2

This article covers a step by step how-to dealing with the setup of JDownloader2 on Raspberry Pi. The complete setup is meant to be used as the user pi. Take care of it, if you like to set it up for another user. The goal Run a JDownloader2 instance that automatically starts when a desktop … Read more

Setting up a VNC server on Raspberry Pi using tightvncserver

This article covers a step by step how-to dealing with the setup of a remote desktop alternative on Raspberry Pi. The complete setup is meant to be used as the user pi. Take care of it, if you like to set it up for another user. Prerequisites Running Raspian How-to Install tightvncserver: sudo apt-get install … Read more