vpnDialer is a gtk2+ gui for the vpnc package. It's a simple and easy to use program to create and disable connections. It can also be used to create and modify vpn configuration profiles.
Web interface for UFW, the built-in firewall in Ubuntu. UFW it self is built on iptables. With ufw2web, it is possible to enable or disable the firewall and view status.
NetgearDG tools is a collection of command line utilities to administer Netgear routers running DGTeam firmware. Currently the only supported router is the Netgear DG834GT.