"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> Key TermsAutomatic Private IP Addressing (APIPA)Classless Inter-Domain Routing (CIDR)default gatewayDomain Name System (DNS)Dynamic Host Configuration Protocol (DHCP)hostInternet Connection Firewall (ICF)Internet Connection Sharing (ICS)Internet Protocol Security (IPSec)IP addressLayer 2 Tunneling Protocol (L2TP)Platform for Privacy Preferences (P3P)Point-to-Point Tunneling Protocol (PPTP)Remote AssistanceRemote Desktopsubnet maskvirtual private network (VPN)Windows FirewallWindows Internet Naming Service (WINS)