Extensible Messaging and Presence Protocol (XMPP) is a communications protocol for message-oriented middleware based on XML (Extensible Markup Language). The protocol was originally named Jabber, and was developed by the Jabber open-source community in 1999 for near real-time, instant messaging (IM), presence information, and contact list maintenance. Designed to be extensible, the protocol has also been used for publish-subscribe systems, signalling for VoIP, video, file transfer, gaming, Internet of Things applications such as the smart grid, and social networking services.
Applications
On the Raspberry Pi you can easily run a webserver for your site. We have also tested open source software, Drupal and Wordpress, on Raspberry.
VPN is a virtual private network. It is created by software or hardware devices on the server. Clients across the Internet can create a secure tunnel connection cable replacement and wireless connections. VPN seems to be as a local LAN. Through this network you can fully and safely, with minimal costs, connect your branch office LAN network anywhere in the world.
You need at least two Raspberry Pi to operate a supercomputer: a parallel processing on Raspberry Pi is possible thanks to the ultra portable MPICH2 (Message Passing Interface).
Why not take advantage of Raspberry Pi monitoring of your servers or other devices connecting SNMP, etc.
Raspberry Pi can of course be used as a standalone mail server POP3, IMAP and SMTP.
High-quality hardware and a good internet connection is the first prerequisite for the operation of a DNS server. Raspberry PI gives you the assurance of quality hardware, and in our data center it