---

S/MIME

SACK

sampling

SAP

SASL

satellite

SBM

SC

schema publishing

SCSI

SCSP

SCTP

SDH

SDL

SDLC

SDP

search

search filter

Secondary DNS Server

secret key

secret key establishment

Secure Entry Point

Secure Real-time Transport Protocol

Secure SMTP

Secure/Multipurpose Internet Mail Extensions

security

Security Association

Security Consideration

security extension

security issue

Security Layer

security mechanism

Security Model

security requirement

security service

selective acknowledgement

Selective Acknowledgment

semantic

sender

SEP

Sequence Number

serial number

Server Address

server cache

Server Cache Synchronization Protocol

server discovery

server side

service

service interface

Service Level

Service Location Protocol

service template

Services Management

session

Session Announcement Protocol

session balancing

Session Description Protocol

Session Initiation Protocol

SGML

SHA

sha-1

SHDSL

SIG

SigComp

Signaling

Signaling System 7

signature

signer

Signing

SIGTRAN

SIIT

Simple and Protected GSS-API Negotiation Mechanism

Simple Authentication

Simple Authentication and Security Layer

simple data link

Simple File Transfer Protocol

Simple Mail

simple mail transfer protocol

Simple Network Management Protocol

Simple Object Access Protocol

Single-Pair High-Speed Digital Subscriber Line

SIP

SIP-T

SLIP

Slow-Start

SLP

SLPv2

SM

Small Computer Systems Interface

SMDS

SMI

SMIng

SMIv2

SMPTE

SMTP

SMTP service

SNA

SNA Control Protocol

SNA NAUs

SNACP

SNMP

SNMP agent

SNMP MIB

SNMP over AppleTalk

SNMP over OSI

SNMPv2

SNMPv3

SOAP

SONET

SONET/SDH

Source Address

spam

sparse mode

sparse mode PIM

SPKI

SPKM

Spoofing

SPX

SRB

SRP

SRTP

SRV

SS7

ST2

Standard MIB

start

STAT

State

state management

stateless

stateless address autoconfiguration

Static Dictionary

static routing

Station Source Routing MIB

status code

STD

STD 1

STR

Stream

stream control transmission

Stream Control Transmission Protocol

string representation

Stringprep

Structure of Management Information

STUN

Sub-Namespace

sub-option

Sub-type

Sub-type Registration

subject

subnet

subnet anycast address

subnet bandwidth manager

subnetting procedure

subnetwork

subscriber

subtree

SUPDUP

switch

Symmetric Key

synchronization

synchronous

synchronous digital hierarchy

synchronous optical network

Syntax Definition

system security

---