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Communications protocol

In networking, a communications protocol or network protocol is the specification of a set of rules for a particular type of communication.

Different protocols often describe different aspects of a single communication; taken together, these form a protocol stack. The terms "protocol" and "protocol stack" also refer to the software that implements a protocol.

Most recent protocols are assigned by the IETF for internet communications, and the IEEE, or the ISO organizations for other types. The ITU-T handles telecommunications protocols and formats.

Index page for network protocols and protocol layers, categorised by the nearest matching layers of the OSI seven layer model.

Systems engineering principles have been applied to design network protocols.

Table of contents
1 Protocol Families
2 Individual Protocols
3 Related Items

Protocol Families

Various protocol stacks or families

Individual Protocols

Layer 1 protocols

Layer 2 protocols

Layer 2+3 protocols

Layer 3 protocols

Layer 3+4 protocols

Layer 4 protocols

Layer 5+ protocols

Layer 7 protocols

and secure versions of the above (as HTTPS, etc.)

Related Items

Protocol Description Languages