LCS complience with IMS / SIP standards ?

Question

1. It seems,  to register to Live Communication server from a SIP client, NTLS or Kerbaros authentication is a must.

How to register from a SIP client which doesn't support NTLS or Kerbaros ?

Is there any configuration required on LCS to acheive the same ?

2. If LCS doesn't support HTTP Digest Authentication then its not interoperable with SIP standard rfc 3261 and IMS ? Please correct me if I am wrong ?

Please revert back !!!

Best Regards,

Deepak K Bramhapuriya

Answer 1

Per our support engineer:

Regarding following issue, our buddy has 2 questions on SIP standard in LCS.

 

1)    How to register from a SIP client which doesn't support NTLS or Kerberos?

2)    Does LCS support HTTP Digest Authentication?

 

LCS can choose one of the following based on server settings:

- Kerberos and NTLM (default)

- Kerberos

- NTLM

 

Communicator (Client) doesn't have UI controls for this - it will simply choose Kerberos if presented - if not, it will select NTLM.  If presented with both, it will always choose Kerberos.

 

Moreover, I don’t think LCS has build-in feature of HTTP Digest Authentication. By default, we only support NTLM and Kerberos authentication.

 

-brend (ISV Buddy Team)

Answer 2

Hi.

Is there a way for developers access the SIP NTLM especification?
It's very hard to develop a client to connect to LCS if we can't find any documentation.


Thanks

Answer 3

Hi.

Is there a way to access the SIP NTLM authentication of LCS?
It's very hard to develop a client to connect to LCS if we can't find any documentation :(


Thanks

Answer 4

You can license the protocol specs from MS. For information, go here: http://www.microsoft.com/about/legal/intellectualproperty/protocols/mcpp.mspx

There are specs for the MS extensions to SIP as well as NTLM Authentication.

The IETF RFC 4559 on SPNEGO-based Kerberos and NTLM HTTP Authentication in Microsoft Windows may shed some light on NTLM but is not completely germane to SIP.

HTH

Terry

P.S. I'm not a MS employee

 

Answer 5

I'll take a look but I doubt that thay give me the NTLM authentication of SIP... Is not simple the NTLM authentication... Is the SIP NTLM authentication...


But I'll try...

Thanks