Tech-invite3GPPspecsSIPRFCs
Overview21222324252627282931323334353637384‑5x

Content for  TS 29.204  Word version:  16.0.0

Top   Top   None   None   Next
0…   4…

 

0  IntroductionWord‑p. 4
The absence of security in Signalling System No. 7 (SS7) networks is an identified security weakness in 2G systems. This was formerly perceived not to be a problem, since the SS7 networks were the provinces of a small number of large institutions. This is no longer the case, and so there is now a need for security precautions.
For 3G systems it is a clear goal to be able to protect inter-network SS7 signalling protocols. The protection is done by security gateways which are located at the network border. As a consequence intra network SS7 signalling is not protected and network elements other than Security Gateways are not impacted.
Up

1  ScopeWord‑p. 5
The present document provides functional description of the SS7 Security Gateway. The document covers also network architecture, routeing considerations, and protocol details.

2  References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TS 29.002: "Mobile Application Part (MAP) specification".
[2]
TS 29.078: "Customized Applications for Mobile network Enhanced Logic (CAMEL) Phase 4; CAMEL Application Part (CAP) specification".
[3]
ETSI ETS 300 358: "ISDN Completion of Calls to Busy Subscriber (CCBS) supplementary service; Functional capabilities and information flows".
[4]
TS 23.066: "Support of GSM Mobile Number Portability (MNP) stage 2".
[5]
ITU-T Recommendation Q.773: "Specifications of Signalling System No.7; Transaction capabilities formats and encoding".
[6]
TS 33.200: "3G Security; Network Domain Security (NDS); Mobile Application Part (MAP) application layer security".
[7]
ITU-T Recommendation E.164: " The international public telecommunication numbering plan".
[8]
TS 33.204: "3G Security; Network Domain Security (NDS); Transaction Capabilities Application Part (TCAP) user security".
[9]
ITU-T Recommendations Q.711 to Q.716 (07/96): White Book Signalling Connection Control Part (SCCP).
[10]
TS 21.905: "Vocabulary for 3GPP Specifications".
Up

3  Definitions and abbreviations

3.1  Definitions

For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
TCAP user:
Application Part identified by one of the following SCCP Subsystem Numbers:
0000 0110
HLR (MAP)
0000 0111
VLR (MAP)
0000 1000
MSC (MAP)
0000 1001
EIR (MAP)
0000 1010
is allocated for evolution (possible Authentication Centre)
1001 0001
GMLC (MAP)
1001 0010
CAP
1001 0011
gsmSCF (MAP) or IM-SSF (MAP) or Presence Network Agent
1001 0101
SGSN (MAP)
1001 0110
GGSN (MAP)
0000 1011
SSAP
Up

3.2  AbbreviationsWord‑p. 6
For the purposes of the present document, the following abbreviations apply:
CC
Country Code
GSMA
Global System for Mobile communications Association
IV
Initialisation Vector
MAC
Message Authentication Code
MNP
Mobile Number Portability
MSISDN
Mobile Station International ISDN Number
NDC
National Destination Code
NE
Network Entit
PLMN
Public Land Mobile Network y
RN
Routeing Number
SAD
Security Association Database
SEG
Security Gateway
SPD
Security Policy Database
SPI
Security Parameter Index
SRF
Signalling Relay Functio
TCAP
Transcaction Capabilities Application Part
UDT
SCCP Unitdata message
XUDT
SCCP Extended Unitdata message n
Up


Up   Top   ToC