Support the crlf keep alive technique defined in rfc

Info icon This preview shows pages 127–129. Sign up to view the full content.

View Full Document Right Arrow Icon
support the CRLF keep-alive technique defined in RFC 5626 [32] together with the negotiation mechanism defined in RFC 6223 [64]. W.3.5Required functions of the TURN server The TURN server shall, in addition to the requirements specified in Annex G of TS 23.228 [3], implement the following functionality: - Support TLS/TCP on non-standard port 443 and (optionally) TCP on non-standard port 80 for communication with IMS client W.3.6Required functions of the IMS-ALG and IMS-AGW The requirements for the IMS-ALG and IMS-AGW specified in TS 24.228 [11] apply without changes. NOTE: The IMS-ALG is invoked by the P-CSCF, IBCF, or ISC to handle the case when the remote endpoint lacks support of ICE. The IMS-ALG in turn inserts the IMS-AGW on the media path. Editor’s note: IMS-AGW may be inserted in other cases as well, e.g. for hosted NAT. 3GPP 3GPP TS 33.203 V12.67.0 (2014-0609) 127 Release 12
Image of page 127

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Annex X (Normative): Security for WebRTC IMS Client access to IMS X.1 Introduction This Annex annex specifies the security required for the signalling procedures described in TS 23.228 [3] for WebRTC IMS Client access to IMS. The provisions in the present Annex annex are optional for implementation. The provisions in the present annex are optional for use. For this release of the present specification, only the descriptions relating to the reference points in the IMS core, i.e. the interfaces between eP-CSCF, I-CSCF, S-CSCF, and HSS are normative. The descriptions of the reference points between WIC, WWSF, and eP-CSCF are of informative nature only. The latter are therefore to be considered as examples only, and implementations may be compliant with this specification and yet realise the reference points between WIC, WWSF, and eP-CSCF in a way different from the one described in the present Annex annex . The present Annex annex is structured according to the three registration scenarios for WebRTC IMS Clients described in TS 23.228 [3]. X.2 Authentication of WebRTC IMS Client with IMS subscription re-using existing IMS authentication mechanisms X.2.0 General The present clause X.2 deals with the security aspects of the registration scenario described in TS 23.228 [3] that is entitled " WIC registration of individual Public User Identity using IMS authentication " . X.2.1 General requirements The following security requirements apply to all solutions for the present registration scenario: - REQ 1 .0 : For the reference interface W1 (WIC to WWSF), one way authentication (WIC needs to authenticate WWSF) is needed. For the interface W2 (WIC to eP-CSCF), mutual authentication is required. - REQ 1.1: The eP-CSCF shall verify that the WIC establishing the signalling connection with the eP-CSCF comes from a trusted domain. When the WIC has access to the USIM/ISIM in the UE, IMS AKA scheme shall be used for authenticating WebRTC IMS Client, as defined in section X.2.3 of this document.
Image of page 128
Image of page 129
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern