| General transfer protocols: | |
| FTP: | File Transfer Protocol |
| SMTP: | Standard Mail Transfer Protocol |
| HTTP: | Hypertext Transfer Protocol |
| Teleworking protocols: | |
| VT100 | terminal client protocol |
(80  24 chars, cf. DOS, UNIX shell) | |
| telnet | VT100 based teleworking terminal protocol |
| ssh | secure shell telnet protocol |
| PPP | Point-to-Point Protocol |
| general teleworking protocol | |
| Security protocols: | |
| PAP | Person Authentication Protocol |
| PGP | Pretty Good Privacy |
| (public key encryption protocol) | |