Similar to Layer_2_Tunneling_Protocol

Service Location Protocol

Label Distribution Protocol

Resource Reservation Protocol

Augmented Backus–Naur form

RC2

KOI8-U

RFC 2322

Hyper Text Coffee Pot Control Protocol

Real-Time Streaming Protocol

Virtual Router Redundancy Protocol

Mailto

IP Payload Compression Protocol

VCard

WebDAV

Year 10,000 problem

Internet Printing Protocol

Diffie–Hellman key exchange

S/MIME

Secure Hypertext Transfer Protocol

Simple public-key infrastructure

Common Open Policy Service

Media Gateway Control Protocol

H.248

Session Announcement Protocol

MISTY1

Sieve (mail filtering language)

6to4

Realm-Specific IP