ATM: Asynchronous Transform Mode
CSU/DSU: Channel service unit/data service unit
DNS: Domain Name Server
ENSKIP: Encrypted IP tunnel communications and key-management protocol
IETF: Internet Engineering Task Force
LCP: Link Control Protocol
NTP: Network Time Protocol
PPTP: Point-to-Point Tunneling Protocol
SMPT:Simple Mail Transfer Protocol
SOCKS: Networking proxy protocol to establish a secure data channel between client/server
TCP/IP: Transmission Control Protocol/Internet Protocol
telco: Telephone Company
UDP: User Datagram Protocol
WAN: Wide Area Network