Networking on Linux right now is painful for the mobile desktop user, especially in comparison to other operating systems. A laptop user should never need to use the command line or configuration files to manage their network; it should “Just Work” as automatically as possible and intrude as little as possible into the user’s workflow. NetworkManager attempts to make networking invisible. When moving into areas you’ve been before, NetworkManager automatically connects to the last network the user chose to connect to. Likewise, when back at the desk, NetworkManager will switch to the faster, more reliable wired network connection.
I always had a problem with switching networks between my workplace, friend’s flat and home… and the problem was even more severe when I visit other places! After trying some scripting, I started search for network in synaptic to find this wonderful tool called NetworkManager! Though the website does not give much information, try it and network switching would JUST WORK 
btw… this tool is well integrated with GNOME, KDE and XFCE systrays.
I am Prasad Sunkari,
co-founder of