scope:

General

ISO/IEC ISP 10608 is applicable to End Systems concerned with operating in the Open Systems Interconnection (OSI) environment. It specifies a combination of OSI standards which collectively provide the connection-mode Transport Service using the connection-mode Network Service.

ISO/IEC ISP 10608-5 specifies subnetwork type dependent requirements for end system operation when the end system is attached to an X.25 packet switched data network by a dedicated (permanent) access line and using virtual calls.

This part of ISO/IEC 10608 specifies the profile requirements for the provision of security services using cryptographic techniques with Network Layer Security Protocol connection-mode and SDT-PDU based protection for use with X.25 packet switched data networks as specified in ISO/IEC 10608-5.

Position within the Taxonomy

The taxonomy of profiles is specified in ISO/IEC TR 10000-2. This part of ISO/IEC ISP 10608 supports security services for TA 1111 and TA 1121 profiles as specified in ISO/IEC ISP 10608-5.

Note: ISO/IEC TR 10000 currently does not identify security sub-profiles. Profiles based on this part of ISO/IEC ISP 10608 may be referred to as TA11n1S2, or TA11n1S2C if confidentiality is selected.

Security Services

The following security services are within the scope of this part of ISO/IEC ISP 10608:

a) Peer entity authentication

b) Connection integrity without recovery (including replay protection)

c) Access control using security labels

Note: Where label based access control is not enforced by a system a null label may be employed.

d) Connection confidentiality (optional)

e) Traffic flow confidentiality (optional)

Security Mechanisms

This part of ISO/IEC ISP 10608 provides no assurance as to the strength of the security mechanisms employed.

This part of ISO/IEC ISP 10608 does not specify the cryptographic algorithms to be employed.