IGMP (SAP Stream) forwarding with iptables

In earlier post, I've shown how to setup internet connection sharing (ICS) with iptables. This is sufficient for standard services sharing, but it won't work for SAP Stream. If you want to setup multicast forwarding, you need to enable igmpproxy.

Useful commands

This post summarizes few interesting and useful commands, some of them are from commandlinefu page.

Replacing login manager with tty

This post describes how to disable login manager and use only tty to start desktop environment.
Also it shows how to create fancy image as welcome screen for tty login.

Setting up tor proxy

Tor is an anonymizing network, designed to enhance your privacy on internet. You can easily install an tor daemon and setup it as your proxy, to start private browsing. This post shows how to do this.

Bash Specialities, part 3

This part shows examples for bash string manipulation: string matching and replacing, some substring operations and positional parameters operations.

Loadbalancing owncloud with HA Proxy

This post shows more advanced loadbalancing for owncloud service. The primary concept is inspired by owncloud with dedicated php-fpm service post.
This architecture is more advanced and provides better scalability for load division and therefore better performance.
Performance is crucial factor for such a service providence and a single Raspberry Pi doesn't have much of it. This architecture (2 loadbalanced Raspberry Pi's) provides 33% performance increase and offers easily to connect more nodes.