ACKacknowledgment flag, TCP header
API application program interface
ARP Address Resolution Protocol
ARPANETAdvanced Research Projects Agency network
AS autonomous system
ASCII American Standard Code for Information Interchange
ASN.1 Abstract Syntax Notation One
BER Basic Encoding Rules
BGP Border Gateway Protocol
BIND Berkeley Internet Name Domain
BOOTP Bootstrap Protocol
BPF BSD Packet Filter
BSD Berkeley Software Distribution
CIDR classless interdomain routing
CIX Commercial Internet Exchange
CLNP Connectionless Network Protocol
CRC cyclic redundancy check
CSLIP compressed SLIP
CSMA carrier sense multiple access
DCE Distributed Computing Environment
DDN Defense Data Network
DF don't fragment flag, IP header
DHCP Dynamic Host Configuration Protocol
DLPI Data Link Provider Interface
DNS Domain Name System
DSAP Destination Service Access Point
DTS Distributed Time Service
DVMRP Distance-Vector Multicast Routing Protocol
EBONE European IP Backbone
EGP Exterior Gateway Protocol
EOL end of option list
FCS frame check sequence
FDDI Fiber Distributed Data Interface
FIFO first in, first out
FIN finish flag, TCP header
FQDN fully qualified domain name
FTP File Transfer Protocol
HDLC high-level data link control
HELLO routing protocol
IAB Internet Architecture Board
IANA Internet Assigned Number Authority
ICMP Internet Control Message Protocol
IDRP Interdomain Routing Protocol
IEEE Institute of Electrical and Electronics Engineers
IEN Internet Experiment Notes
IESG Internet Engineering Steering Group
IETF Internet Engineering Task Force
IGMP Internet Group Management Protocol
IGP interior gateway protocol
IP Internet Protocol
IRTF Internet Research Task Force
IS-IS Intermediate System to Intermediate System Protocol
ISN initial sequence number
ISO International Organization for Standardization
ISOC Internet Society
LAN local area network
LBX low bandwidth X
LCP link control protocol
LFN long fat network
LIFO last in, first out
LLC logical link control
LSRR loose source and record route
MBONE multicast backbone
MIB management information base
MILNET Military Network
MIME multipurpose Internet mail extensions
MSL maximum segment lifetime
MSS maximum segment size
MTA message transfer agent
MTU maximum transmission unit
NCP Network Control Protocol
NFS Network File System
NIC Network Information Center
NIT network interface tap
NNTP Network News Transfer Protocol
NOAO National Optical Astronomy Observatories
NOP no operation
NSFNET National Science Foundation network
NSI NASA Science Internet
NTP Network Time Protocol
NVT network virtual terminal
OSF Open Software Foundation
OSI open systems interconnection
OSPF open shortest path first
PAWS protection against wrapped sequence numbers
PDU protocol data unit
POSIX Portable Operating System Interface
PPP Point-to-Point Protocol
PSH push flag, TCP header
RARP Reverse Address Resolution Protocol
RFC Request for Comment
RIP Routing Information Protocol
RPC remote procedure call
RR resource record
RST reset flag, TCP header
RTO retransmission time out
RTT round-trip time
SACK selective acknowledgment
SLIP Serial Line Internet Protocol
SMI structure of management information
SMTP Simple Mail Transfer Protocol
SNMP Simple Network Management Protocol
SSAP source service access point
SSRR strict source and record route
SWS silly window syndrome
SYN synchronize sequence numbers flag, TCP header
TCP Transmission Control Protocol
TFTP Trivial File Transfer Protocol
TLI Transport Layer Interface
TOS type-of-service
TTL time-to-live
TUBA TCP and UDP with bigger addresses
Telnet remote terminal protocol
UDP User Datagram Protocol
URG urgent pointer flag, TCP header
UTC Coordinated Universal Time
UUCP Unix-to-Unix Copy
WAN wide area network
WWW World Wide Web
XDR external data representation
XID transaction ID
XTI X/Open Transport Layer Interface