There appears to be hope if you are running Windows 7 or Windows 8.0, which is to remove a hot-fix (for more information see here, and here) to get the tool to actually run (with limited success it seems). NET 4.5.1, so if you’re running Windows 8.1 (like I am), there’s no hope until a new version of the tool is released as you can’t roll back to an earlier version of. Sounds useful, but I’ve never been able to get it to actually work – there is a seemingly well-known bug between it and. In the User name box, enter your Skype for Business usernameAm I correct in assuming that Skype for Business () doesnt support kerberos on the Mac We have about 325 Mac users and I dont have the nerve to ask every one of them to update a locally-cached password every time they change their AD password.Some of you may have also come across the Lync Connectivity Analyzer, it’s an Offline tool that runs on your PC, and is primarily designed to troubleshoot connection issues with Windows Store App and others that use the LyncDiscover service. In the Sign-in address box, enter your Skype for Business username (i.e.But that wasn’t enough for me…With this article I intend to take it just that little bit further. “good, that works”.There are plenty of fantastic articles around for describing how LyncDiscover plays a part, and the general steps in big picture of the client discovery process. The best I’ve found is Lync Server 2010 – Mobility Deep Dive – Autodiscover Service on the NextHop TechNet Blog.Everybody who’s reading this has at some point, manually typed into a browser and seen a JSON or XML formatted response and thought. Sneaky screenshot of “Lyncer – Lync Tester”.Over the past couple of weeks I’ve come to realise there is very little in the way of detailed information on LyncDiscover / Auto Discovery process past a certain point. However it still crashes on my Windows 8.1 machine.I finally cracked, and set myself on a mission to write my own application, (this will be released in another blog post – coming soon).“EndpointReference” contains the address of the web service we would like to access, using the ticket we receive next as our proof we’ve already authenticated. Also NTLM over HTTP is quite bloated requiring each connection to authenticate fully.The method of obtaining a Ticket allows you to prove your identity once, and receive a unique ticket that is valid for a set length of time, allowing you to simply pass your ticket in subsequent requests, making it much quicker and less resource intensive to make a connection without having to go through the entire re-authentication process each time (compared with NTLM).Along with the 401 Unauthorised, the server returns with the following is a SOAP Message exchange that uses WS-Trust (an extension of the WS-Security specification) that provides a framework for exchanging security tokens and to establish a trust relationship.The parts of the message that we’re interested in are the following 3 Elements: (I won’t be covering SRV Records in this article).And the client then tries HTTP (Port 80) first and then HTTPS (Port 443) for each FQDN and (optionally) appends the SIP URI in the HTTP GET request as followsGET which point we get HTTP Response of 401 Unauthorised letting us know that authentication is required, but it doesn’t accept any of the traditional methods of authentication, you cannot pass NTLM or Kerberos, as both of those require connection to AD to verify the user’s credentials, this would increase the reliance on AD, and would impose additional overhead for each connection attempt. The client discovery process involves looking for the following DNS Entries in order.
Skype For Business Discovery Address Update A Locally“WebScheduler” is the URL for the Lync Web Scheduler service. “AuthBroker” is the URL for the Authentication Broker (Reach) web service. “Autodiscover” – been there, done this, but we now know which server which we’re homed on, so we wouldn’t have to follow any redirects next time (unless we move). Here’s the usual header / message descriptor:" IssueInstant="T12:00:00.000Z" first 4 lines under the “User” element tell you the internal FQDN of your home Front End Pool, and external Access Edge FQDN of the Edge Pool associated with your home pool and which port to use based on your type (client or server).Then we get a rather self-explanatory list of Internal and corresponding External web service URLs for the following services: In this case a Nonce is passed which is just a Base64 encoded unique key which is used as ‘proof of possession’ to prevent replay attacks.I’ve noticed that PreAuthentication is required, and that Chunking needs to be disabled (if the message is chunked, the server doesn’t response with 100 Continue as expected, but instead returns an error prematurely saying the request was invalid).We then receive our SAML Assertion wrapped in a SOAP Message. “Entropy” is passed as a “BinarySecret” because encryption is not needed as we’re talking over TLS. Serial key janome artistic digitizer softwareIncluding some detail on the protocols used to compress SIP Traffic which I personally found equally interesting as frustrating.After that I plan to add service level tests to my program, going past just discovering, to actually test against MCX, CertProvisioning, and AuthBroker and to see that they are working as expected.Thanks for reading, comments are always welcome, and encouraged □Thanks for this informative article. What’s nextNext up (as and when I get more time), I will talk about my experience working and testing the Access Edge using SIP (User registration, and some other commands such as OPTIONS, NOTIFY, and SUBSCRIBE). “Self” the Web Service that returned this page.We now know two separate ways to obtain information about the home pool of a specific user and associated web services.WebTicketService is available on Lync Server 20, and requires NTLM or Kerberos support to obtain the initial Ticket which can then be used to prove the identity of the user from then on.OAuth is available only on Lync Server 2013, and provides an easier (and more web friendly) way to obtain a token, which can also be used to prove identity, on any Front End Server in the topology as they all share the same X509 Certificate, replicated via the CMS. “XFrame” used for cross-domain AJAX requests. “UCWA” is the new Unified Communication Web API intended to replace, and improve upon MCX. “MCX” is the Lync Mobility web services I am unsure what am i missing here.POST /WebTicket/WebTicketService.svc HTTP/1.1Content-Type: application/soap+xml charset=utf-8Authorization: Bearer cwt=AAEBHAEFAAAAAAAFFtest123Strict-Transport-Security → max-age=31536000 includeSubDomainsX-MS-Server-Fqdn → BN10M00EDG01.infra.lync. My request keeps returning 401 unauthorized. I generated the OAuth token using username password creds.
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