One thing that was not clear from the documents was handling overlapping invocations that happens when an invocation starts but the previous one has not finished within the specified interval. It is straightforward for the most part, and Microsoft provides good documentation on the libraries. If (String.Compare( this post, I share how I used the interface and class available in ASP.NET core to run a background job at a specified interval.
If it cannot use Kerberos, it will use NTLM." // if it is Negotiate. The header is set to "Negotiate" instead of "NTLM." This does not mean it will use Kerberos or NTLM, but that it will "Negotiate" the authorization method and try Kerberos first if it is able. We know that NTLM authentication is being used here because the first character is a '"T." If it was a "Y," it would be Kerberos. This response tells us that the client and the server are negotiating an NTLM connection. "What does this tell us? We can see that the Authorization header is set to "Negotiate" and we can see a long string of characters sent in that header. HTTP: Authorization = Negotiate TlRMTVNTUAABAAAAB4IIogAAAAAAAAAAAAAAAAAAAAAFASgKAAAA HTTP: User-Agent = Mozilla/4.0 (compatible MSIE 6.0 Windows NT 5.1 SV1. HTTP: Accept = image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.
HTTP: Uniform Resource Identifier = /webapplication1/webform1.aspx HTTP: GET Request (from client using port 3135) Here is a snippet from the frame that sends authentication information from the client: 23 4294967263.4294641621 LOCAL 00045A420DBC HTTP GET Request (from client using port 3135) 192.168.0.2 192.168.0.4 IP "Since we are looking over this trace to see if the client is sending authentication information, we can use the TCP segments to track the HTTP GET requests and the response from the server. Determine if HTTP authentication is NTLM or Kerberos
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