| ACL | Access Control List (Windows NT) |
| ARP | Address Resolution Protocol |
| ASCII | American Standard Code for Information Interchange |
| ATM | Asynchronous Transfer Mode |
| BCC | Blind Carbon Copy |
| BDC | Backup Domain Controller (Windows NT) |
| BGP | Border Gateway Protocol |
| CCIC | Committee on Computing, Information and Communications (from NSTC) |
| CERT | Computer Emergency Response Team |
| CGI | Common Gateway Interface |
| CIDR | Classless Interdomain Routing |
| CIR | Commited Information Rate |
| CIFS | Common Internet File System |
| CLSID | Class Identifier |
| COFF | Common Object File Format |
| COM | Component Object Model |
| CPU | Central Processing Unit |
| CSIV | Centro de Servicio de InfoVía |
| CSIC | Coordinational Scientific Information Center |
| CVP | Circuito Virtual Permanente |
| DAS | Dual Attached Station |
| DCE | Data Communications Equipment |
| DCOM | Distributed Component Object Model |
| DES | Data Encryption Standard |
| DHCP | Dynamic Host Configuration Protocol |
| DIMM | Dual In-Line Memory Module |
| DLL | Dynamic Link Library |
| DLS | Data Link Server |
| DNS | Domain Name System |
| DRAM | Dynamic Random Access Memory |
| DSMN | Directory Service Manager for Netware (Windows NT) |
| DTE | Data Terminal Equipment |
| DTMF | Dual Tone Multi Frecuency |
| DUN | Dial-Up Networking |
| EAP | Extensible Authentication Protocol |
| EBCDIC | Extended Binary Coded Decimal Interchange Code |
| EDO | Extended Data Output |
| EGP | External Gateway Protocol |
| EIA | Electronic Industries Association (U.S. gov.) |
| EIR | Excess Information Rate |
| EPROM | Electrically Programmable Read Only Memory |
| FDDI | Fiber Distributed Data Interface |
| FIB | Forwarding Information Base |
| FNC | Federal Networking Council |
| FPM | Fast Page Mode |
| FPNW | File and Printer service for Netware |
| FSF | Free Software Fundation |
| FTP | File Transfer Protocol |
| FYI | For Your Information |
| GIF | Graphics Interchange Format |
| GINA | Graphical Identification and Authentication |
| GGP | Gateway-Gateway Protocol |
| GPL | General Public License |
| GPS | Global Positionating System |
| GSNW | Gateway Service for Netware (Windows NT) |
| GUI | Graphical User Interface |
| HDLC | High-level Data Link Control |
| HPC | Handheld Personal Computer |
| HSM | Hardware Specific Module |
| HTML | HyperText Markup Language |
| HTTP | HyperText Transfer Protocol |
| HTTPD | HyperText Transfer Protocol Daemon |
| HTTPS | HyperText Transfer Protocol Secure |
| IAB | Internet Architecture Board |
| IANA | Internet Assigned Numbers Authority |
| ICMP | Internet Control Message Protocol |
| IGMP | Internet Group Management Protocol |
| IETF | Internet Engeneering Task Force |
| IESG | Internet Engeneering Steering Group |
| IHV | Independent Hardware Vendors |
| IIS | Internet Information Server (Windows NT) |
| IMAP | Internet Message Access Protocol |
| INRT | I Never Remember Them |
| InterNIC | Internet Network Information Center |
| IRSG | Internet Research Steering Group |
| IRTF | Internet Research Task Force |
| ISA | Industry Standard Architecture |
| ISO | International Organization for Standardization ¡sigh! |
| ISOC | Internet Society |
| IP | Internet Protocol |
| IPC | InterProcess Communication |
| IPCP | Internet Protocol Control Protocol |
| ISP | Internet Service Provider |
| ISV | Independent Software Vendors |
| ITU | International Telecommunications Union |