a toggle to turn on/off all deamons that you want on a home network but not on a public one. e.g:
samba (not only do you not want to share your files with joe blogs but it also has several security vulnerabilities)
nfsd (again you probably don't want to be sharing your file)
zeroconfd (this is security through obscurity, but useful for all those little applets that publish to it which haven't been added to the list of programs to stop, YET)
initially this could be done by a script combined with a simple system tray applet
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Later versions could include
*auto toggling based on the network id
*integration into nm-applet GUI
*option for ftp deamons
*gui configuration
*mark all networks unsecure by default, so a default ubuntu computer that hasnt said its on a home network isnt vulnerable to smba or nfs exploits.
*toggling firewall settings as suggested in
http://brainstorm.ubuntu.com/idea/10314/
