| GGP | Gateway to Gateway Protocol |
| GW | Gateway |
| EG | Exterior Gateway |
| CG | Core Gateway |
| EGW | Edge Gateway |
| IG | Interior Gateway |
| IFG | Incoming Fax Gateway |
| GWL | Gateway Link |
| IGM | Internet Gateway Multicast |
| EGP | Exterior Gateway Protocol |
| GSNW | Gateway Services for Netware |
| DGP | Dissimilar Gateway Protocol |
| CGW | Customer/Campus Gateway |
| SPG | Service Protocol Gateway |
| RCG | Relational Chemical Gateway |
| TIG | Terminal Internet Gateway |
| MGC | Media Gateway Controller |
| IGP | Interior Gateway Protocol |
| MGCP | Media Gateway Control Protocol |
| IGP | Interior Gateway Protocol [Internet] |
| SOSIG | Social Science Information Gateway |
| SWING | Subscriber Wireless Network Gateway |
| OSGI | Open Services Gateway Initiative |
| GMSC | Gateway Mobile Switching Centre |
| BGI | Binary Gateway Interface [engl.] Host-Web-Anbindung |
| ALG | Application Level Gateway [engl.] |
| BGP | Border Gateway Protocol [Internet] |
| ALG | Application Level Gateway [engl.] Firewall-Konzept |
| BGT | Border Gateway Protocol [engl.] |
| CGI | Common Gateway Interface [engl.] Hostanbindung ans Web |
| EGP | Exterior Gateway Protocol [Internet] |
| GGSN | Gateway GPRS Support Node |
| ATG | Address Translation Gateway [engl.] |
| AECG | Advanced Embedded Codes Gateway [engl.] |
| BGP | Border Gateway Router Protocol [engl.] Teil des Layer 3 nach ISO, z.B. bei Gigabit-Ethernet, im Internet RFC 1771 und 2545 |
| EIGRP | Enhanced Interior Gateway Routing Protocol |
| ADAM | Art, Design, Architecture + Media Information Gateway |
| SGMP | Simple Gateway Management / Monitoring Protocol [Internet] |
| IGRP | Internet/Interior Gateway Routing Protocol [Cisco] |