A number of services might be accessed over HTTP. For the Presence Service, it shall be possible to manage the data on the Presence Server over the Ut reference point, which is based on HTTP. Other services like conferencing,
messaging, push, etc. might be accessed using HTTP.
Access to services over HTTP can be done in a secure manner. ThiS TS describes how the access over
HTTP can be secured using TLS in the Generic Authentication Architecture.
ThiS TS specifies secure access methods to Network Application Functions (NAF) using HTTP over TLS
in the Generic Authentication Architecture (GAA), and provides Stage 2 security requirements, principles and
procedures for the access. ThiS TS describes both direct access to an Application Server (AS) and access
to an Application Server through an Authentication Proxy (AP).
Any application specific details for access to Applications Servers are not in scope of this specification
and are covered in separate documents. An example of such a document is TS 33.141
, which specifies
the security for presence services.