These are my links for 28 set 2013 through 30 set 2013:

• Duck DNS – Duck DNS is a free service which will point a DNS (sub domains of duckdns.org) to an IP of your choice via http://santoro.tk/blog/?p=217
• VirtualBox: i portali dove scaricare macchine virtuali VDI di Linux e Microsoft Windows –
• How to Create VLAN Trunking on Cisco Catalyst Switch – If you have multiple switches that are part of a stack, then any VLAN you create on the master switch is available on all the switches in the stack. However, if you have multiple switches that are not part of stack, and if you need to use the same VLAN between these two switches, you need to use VLAN trunking. This tutorial explains how to configure VLAN trunking between two different switches.